{"id":22447,"date":"2026-07-07T17:35:26","date_gmt":"2026-07-07T08:35:26","guid":{"rendered":"https:\/\/blastmail.jp\/blog\/?p=22447"},"modified":"2026-07-09T12:39:50","modified_gmt":"2026-07-09T03:39:50","slug":"outlook-emails-not-arriving","status":"publish","type":"post","link":"https:\/\/blastmail.jp\/blog\/no-delivery\/outlook-emails-not-arriving","title":{"rendered":"Outlook\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u539f\u56e0\u3068\u5bfe\u51e6\u6cd5\uff5c\u53d7\u4fe1\u8005\u30fb\u9001\u4fe1\u8005\u305d\u308c\u305e\u308c\u306e\u89e3\u6c7a\u624b\u9806\u3092\u5fb9\u5e95\u89e3\u8aac"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2026\/07\/outlook.png\" alt=\"outlook\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u539f\u56e0\u3068\u5bfe\u51e6\u6cd5\" width=\"2848\" height=\"1504\" class=\"alignnone size-full wp-image-22457\" \/><\/p>\n<p>\u300c\u53d6\u5f15\u5148\u304b\u3089\u306e\u30e1\u30fc\u30eb\u304cOutlook\u306b\u5c4a\u304b\u306a\u3044\u300d\u300c\u30e1\u30eb\u30de\u30ac\u3092Outlook\u5b9b\u306b\u9001\u308b\u3068\u3001\u306a\u305c\u304b\u8aad\u8005\u306b\u5c4a\u3044\u3066\u3044\u306a\u3044\u300d\u2014\u2014Outlook\u306b\u307e\u3064\u308f\u308b\u300c\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u300d\u30c8\u30e9\u30d6\u30eb\u306f\u3001\u53d7\u4fe1\u3059\u308b\u5074\u30fb\u9001\u4fe1\u3059\u308b\u5074\u306e\u4e21\u65b9\u3067\u983b\u7e41\u306b\u767a\u751f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u5384\u4ecb\u306a\u306e\u306f\u3001\u539f\u56e0\u304c\u53d7\u4fe1\u8005\u5074\u306e\u8a2d\u5b9a\u306b\u3042\u308b\u5834\u5408\u3068\u3001\u9001\u4fe1\u8005\u5074\u306e\u914d\u4fe1\u74b0\u5883\u306b\u3042\u308b\u5834\u5408\u304c\u3042\u308b\u70b9\u3067\u3059\u3002\u3055\u3089\u306b<strong>Microsoft\u306f2025\u5e745\u6708\u304b\u3089\u4e00\u6589\u9001\u4fe1\u8005\u5411\u3051\u306e\u65b0\u3057\u3044\u9001\u4fe1\u8005\u8981\u4ef6\uff08SPF\u30fbDKIM\u30fbDMARC\u306e\u5fc5\u9808\u5316\uff09\u3092\u65bd\u884c\u3057\u3066\u304a\u308a\u3001\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u4f01\u696d\u306e\u30e1\u30fc\u30eb\u306fOutlook\u5b9b\u306b\u5c4a\u304d\u306b\u304f\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/strong><\/p>\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001\u524d\u534a\u3067\u300cOutlook\u3067\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u3067\u304d\u306a\u3044\u4eba\u300d\u5411\u3051\u306e\u539f\u56e0\u3068\u5bfe\u51e6\u6cd5\u3092\u3001\u5f8c\u534a\u3067\u300cOutlook\u5b9b\u306e\u4e00\u6589\u9001\u4fe1\u304c\u5c4a\u304b\u306a\u3044\u4f01\u696d\u30fb\u62c5\u5f53\u8005\u300d\u5411\u3051\u306e\u539f\u56e0\u3068\u5bfe\u7b56\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002\u5f8c\u534a\u3067\u306f\u3001Microsoft\u304c\u63d0\u4f9b\u3059\u308b\u5230\u9054\u7387\u6539\u5584\u306b\u5f79\u7acb\u3064\u76e3\u8996\u30c4\u30fc\u30eb\u300cSNDS\u300d\u306e\u767b\u9332\u624b\u9806\u3084\u6d3b\u7528\u65b9\u6cd5\u3082\u8a73\u3057\u304f\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/blastmail.jp\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2023\/01\/bm_banner_big_mailsystem_1200x628.png\" alt=\"blastmail\u306e\u30d0\u30ca\u30fc\" width=\"1200\" height=\"629\" class=\"alignnone wp-image-19829 size-full\" \/><\/a><\/p>\n<h2>\u307e\u305a\u78ba\u8a8d\uff1a\u5c4a\u304b\u306a\u3044\u539f\u56e0\u306f\u300c\u53d7\u4fe1\u5074\u300d\u304b\u300c\u9001\u4fe1\u5074\u300d\u304b<\/h2>\n<p>Outlook\u3067\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u5834\u5408\u3001\u6700\u521d\u306b\u3084\u308b\u3079\u304d\u306f\u300c\u539f\u56e0\u304c\u3069\u3061\u3089\u5074\u306b\u3042\u308b\u304b\u300d\u306e\u5207\u308a\u5206\u3051\u3067\u3059\u3002<\/p>\n<div style=\"overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 24px 0; border-radius: 6px;\">\n<table style=\"width: 100%; border-collapse: collapse; font-size: 15px; line-height: 1.7; min-width: 620px;\">\n<thead>\n<tr>\n<th style=\"background-color: #c12620; color: #ffffff; padding: 12px 14px; text-align: left; border: 1px solid #a81f1a; font-weight: bold; white-space: nowrap;\">\u72b6\u6cc1<\/th>\n<th style=\"background-color: #c12620; color: #ffffff; padding: 12px 14px; text-align: left; border: 1px solid #a81f1a; font-weight: bold; white-space: nowrap;\">\u539f\u56e0\u306e\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u5074<\/th>\n<th style=\"background-color: #c12620; color: #ffffff; padding: 12px 14px; text-align: left; border: 1px solid #a81f1a; font-weight: bold; white-space: nowrap;\">\u8aad\u3080\u3079\u304d\u30bb\u30af\u30b7\u30e7\u30f3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background-color: #ffffff;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u7279\u5b9a\u306e\u76f8\u624b\u304b\u3089\u306e\u30e1\u30fc\u30eb\u3060\u3051\u5c4a\u304b\u306a\u3044<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u53d7\u4fe1\u5074\u306e\u632f\u308a\u5206\u3051\u8a2d\u5b9a\u307e\u305f\u306f\u9001\u4fe1\u5074\u306e\u8a55\u4fa1\u4f4e\u4e0b<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\"><a href=\"#receiver-causes\">\u524d\u534a<\/a>\u2192<a href=\"#sender-causes\">\u5f8c\u534a<\/a>\u306e\u9806\u3067\u78ba\u8a8d<\/td>\n<\/tr>\n<tr style=\"background-color: #fbf3f2;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u3059\u3079\u3066\u306e\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u53d7\u4fe1\u5074\uff08\u5bb9\u91cf\u30fb\u30a2\u30ab\u30a6\u30f3\u30c8\u30fb\u540c\u671f\uff09<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\"><a href=\"#receiver-causes\">\u524d\u534a\uff08\u53d7\u4fe1\u8005\u5411\u3051\uff09<\/a><\/td>\n<\/tr>\n<tr style=\"background-color: #ffffff;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u81ea\u5206\u304c\u9001\u3063\u305fOutlook\u5b9b\u30e1\u30fc\u30eb\u304c\u30a8\u30e9\u30fc\u3067\u8fd4\u3063\u3066\u304f\u308b<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u9001\u4fe1\u5074\uff08\u30d6\u30ed\u30c3\u30af\u30fb\u8a8d\u8a3c\u4e0d\u5099\uff09<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\"><a href=\"#sender-causes\">\u5f8c\u534a\uff08\u9001\u4fe1\u8005\u5411\u3051\uff09<\/a><\/td>\n<\/tr>\n<tr style=\"background-color: #fbf3f2;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u4e00\u6589\u914d\u4fe1\u306e\u3046\u3061Outlook\u7cfb\u30a2\u30c9\u30ec\u30b9\u3060\u3051\u5230\u9054\u7387\u304c\u4f4e\u3044<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u9001\u4fe1\u5074\uff08\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u30fb\u8a8d\u8a3c\uff09<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\"><a href=\"#sender-causes\">\u5f8c\u534a\uff08\u9001\u4fe1\u8005\u5411\u3051\uff09<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u306a\u304a\u3001\u672c\u8a18\u4e8b\u3067\u300cOutlook\u300d\u3068\u547c\u3076\u3082\u306e\u306b\u306f\u3001\u5927\u304d\u304f\u5206\u3051\u3066\u6b21\u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>Outlook.com\uff0foutlook.jp\uff0fhotmail.com\uff0flive.com\u306a\u3069\u306e\u500b\u4eba\u5411\u3051\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9<\/li>\n<li>Microsoft 365\uff08Exchange Online\uff09\u3092\u5229\u7528\u3059\u308b\u4f01\u696d\u30fb\u7d44\u7e54\u306e\u30e1\u30fc\u30eb\u74b0\u5883<\/li>\n<\/ul>\n<\/div>\n<p>\u3069\u3061\u3089\u3082Microsoft\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u304c\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u4ed5\u7d44\u307f\u3084\u7ba1\u7406\u8005\u306e\u95a2\u4e0e\u7bc4\u56f2\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u8aad\u307f\u9032\u3081\u308b\u969b\u306b\u610f\u8b58\u3057\u3066\u304a\u304f\u3068\u3001\u539f\u56e0\u7279\u5b9a\u304c\u30b9\u30e0\u30fc\u30ba\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2 id=\"receiver-causes\" style=\"scroll-margin-top: 90px;\">\u3010\u53d7\u4fe1\u8005\u5411\u3051\u3011Outlook\u3067\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u30447\u3064\u306e\u539f\u56e0<\/h2>\n<p>\u307e\u305a\u306f\u53d7\u4fe1\u8005\u5074\u3067\u3059\u3002\u300c\u5c4a\u3044\u3066\u3044\u306a\u3044\u300d\u3088\u3046\u306b\u898b\u3048\u308b\u30e1\u30fc\u30eb\u306e\u591a\u304f\u306f\u3001\u5b9f\u969b\u306b\u306f\u53d7\u4fe1\u6e08\u307f\u3067\u3001\u53d7\u4fe1\u30c8\u30ec\u30a4\u4ee5\u5916\u306e\u5834\u6240\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u767a\u751f\u983b\u5ea6\u306e\u9ad8\u3044\u9806\u306b\u30017\u3064\u306e\u539f\u56e0\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h3>\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u3066\u3044\u308b<\/h3>\n<p>\u6700\u3082\u591a\u3044\u539f\u56e0\u304c\u3001Outlook\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u30fc\u306b\u3088\u308b\u81ea\u52d5\u632f\u308a\u5206\u3051\u3067\u3059\u3002Outlook\uff08Microsoft\uff09\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u30fc\u306f\u5f37\u529b\u306a\u3053\u3068\u3067\u77e5\u3089\u308c\u3066\u304a\u308a\u3001\u4e00\u6589\u914d\u4fe1\u30e1\u30fc\u30eb\u3084\u521d\u3081\u3066\u306e\u5dee\u51fa\u4eba\u304b\u3089\u306e\u30e1\u30fc\u30eb\u304c\u3001\u6b63\u5f53\u306a\u30e1\u30fc\u30eb\u3067\u3042\u3063\u3066\u3082\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u308b\u3053\u3068\u306f\u73cd\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u5fc3\u5f53\u305f\u308a\u306e\u3042\u308b\u30e1\u30fc\u30eb\u304c\u898b\u3064\u304b\u3089\u306a\u3044\u3068\u304d\u306f\u3001\u307e\u305a\u753b\u9762\u5de6\u306e\u30d5\u30a9\u30eb\u30c0\u4e00\u89a7\u304b\u3089<strong>\u300c\u8ff7\u60d1\u30e1\u30fc\u30eb\u300d\u30d5\u30a9\u30eb\u30c0<\/strong>\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u512a\u5148\u53d7\u4fe1\u30c8\u30ec\u30a4\u306e\u300c\u305d\u306e\u4ed6\u300d\u30bf\u30d6\u306b\u5206\u985e\u3055\u308c\u3066\u3044\u308b<\/h3>\n<p>Outlook\u306b\u306f\u53d7\u4fe1\u30c8\u30ec\u30a4\u3092\u300c\u512a\u5148\u300d\u3068\u300c\u305d\u306e\u4ed6\u300d\u306b\u81ea\u52d5\u5206\u985e\u3059\u308b\u512a\u5148\u53d7\u4fe1\u30c8\u30ec\u30a4\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u3002\u30e1\u30eb\u30de\u30ac\u3084\u81ea\u52d5\u901a\u77e5\u3001\u4e88\u7d04\u78ba\u8a8d\u30e1\u30fc\u30eb\u306a\u3069\u306f\u300c\u305d\u306e\u4ed6\u300d\u30bf\u30d6\u306b\u5206\u985e\u3055\u308c\u3084\u3059\u304f\u3001\u300c\u512a\u5148\u300d\u30bf\u30d6\u3057\u304b\u898b\u3066\u3044\u306a\u3044\u3068\u53d7\u4fe1\u306b\u6c17\u3065\u3051\u307e\u305b\u3093\u3002<\/p>\n<p>\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u3068\u9055\u3044\u3001\u53d7\u4fe1\u30c8\u30ec\u30a4\u5185\u306e\u30bf\u30d6\u5206\u3051\u306a\u306e\u3067\u898b\u843d\u3068\u3057\u3084\u3059\u3044\u306e\u304c\u7279\u5fb4\u3067\u3059\u3002<\/p>\n<h3>\u4ed5\u5206\u3051\u30eb\u30fc\u30eb\u30fb\u53d7\u4fe1\u62d2\u5426\u30ea\u30b9\u30c8\u304c\u5f71\u97ff\u3057\u3066\u3044\u308b<\/h3>\n<p>\u81ea\u5206\u3067\uff08\u3042\u308b\u3044\u306f\u904e\u53bb\u306b\uff09\u8a2d\u5b9a\u3057\u305f\u4ed5\u5206\u3051\u30eb\u30fc\u30eb\u306b\u3088\u3063\u3066\u3001\u30e1\u30fc\u30eb\u304c\u5225\u30d5\u30a9\u30eb\u30c0\u3078\u81ea\u52d5\u79fb\u52d5\u307e\u305f\u306f\u524a\u9664\u3055\u308c\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3067\u3059\u3002\u307e\u305f\u3001\u5dee\u51fa\u4eba\u304c\u300c\u53d7\u4fe1\u62d2\u5426\u9001\u4fe1\u8005\u30ea\u30b9\u30c8\u300d\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u3068\u3001\u305d\u306e\u30e1\u30fc\u30eb\u306f\u81ea\u52d5\u7684\u306b\u8ff7\u60d1\u30e1\u30fc\u30eb\u6271\u3044\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u8907\u6570\u306e\u30eb\u30fc\u30eb\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u610f\u56f3\u3057\u306a\u3044\u512a\u5148\u9806\u4f4d\u3067\u9069\u7528\u3055\u308c\u3066\u3057\u307e\u3046\u3053\u3068\u3082\u3042\u308b\u305f\u3081\u3001\u5c4a\u304b\u306a\u3044\u30e1\u30fc\u30eb\u306e\u5dee\u51fa\u4eba\u304c\u30eb\u30fc\u30eb\u306e\u6761\u4ef6\u306b\u5408\u81f4\u3057\u3066\u3044\u306a\u3044\u304b\u78ba\u8a8d\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<h3>\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306e\u5bb9\u91cf\u304c\u4e0a\u9650\u306b\u9054\u3057\u3066\u3044\u308b<\/h3>\n<p>Outlook.com\u3067\u306f\u3001\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306e\u4fdd\u5b58\u5bb9\u91cf\u304c\u4e0a\u9650\u306b\u9054\u3059\u308b\u3068\u65b0\u3057\u3044\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u5927\u5bb9\u91cf\u306e\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u4ed8\u304d\u30e1\u30fc\u30eb\u3092\u6e9c\u3081\u8fbc\u3093\u3067\u3044\u308b\u5834\u5408\u306f\u8981\u6ce8\u610f\u3067\u3059\u3002\u5bb9\u91cf\u8d85\u904e\u306e\u72b6\u614b\u3067\u306f\u3001\u9001\u4fe1\u8005\u5074\u306b\u306f\u30a8\u30e9\u30fc\u30e1\u30fc\u30eb\uff08\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u304c\u3044\u3063\u3071\u3044\u3067\u3059\u3001\u3068\u3044\u3046\u8da3\u65e8\u306e\u901a\u77e5\uff09\u304c\u8fd4\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30b5\u30fc\u30d0\u30fc\u5074\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u898f\u5236\u3067\u524a\u9664\u30fb\u9694\u96e2\u3055\u308c\u3066\u3044\u308b<\/h3>\n<p>\u898b\u843d\u3068\u3055\u308c\u304c\u3061\u3067\u3059\u304c\u3001Outlook.com\u3067\u306f\u8ff7\u60d1\u30e1\u30fc\u30eb\u306e\u7591\u3044\u304c\u5f37\u3044\u3068\u5224\u5b9a\u3055\u308c\u305f\u30e1\u30fc\u30eb\u304c\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u3059\u3089\u5165\u3089\u305a\u3001<strong>\u30b5\u30fc\u30d0\u30fc\u5074\u3067\u53d7\u4fe1\u3092\u62d2\u5426\u3055\u308c\u308b<\/strong>\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3001\u53d7\u4fe1\u8005\u304c\u3069\u308c\u3060\u3051\u30d5\u30a9\u30eb\u30c0\u3092\u63a2\u3057\u3066\u3082\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u307e\u305f\u3001Microsoft 365\u3092\u5229\u7528\u3059\u308b\u4f01\u696d\u74b0\u5883\u3067\u306f\u3001Microsoft Defender for Office 365\u306a\u3069\u306e\u4fdd\u8b77\u6a5f\u80fd\u306b\u3088\u308a\u30e1\u30fc\u30eb\u304c\u300c\u691c\u75ab\uff08\u9694\u96e2\uff09\u300d\u3055\u308c\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u691c\u75ab\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306f\u30e6\u30fc\u30b6\u30fc\u306e\u753b\u9762\u306b\u306f\u8868\u793a\u3055\u308c\u306a\u3044\u305f\u3081\u3001\u7ba1\u7406\u8005\u3078\u306e\u78ba\u8a8d\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<h3>\u65b0\u3057\u3044Outlook\u3078\u306e\u5207\u308a\u66ff\u3048\u30fb\u540c\u671f\u306e\u554f\u984c<\/h3>\n<p>\u8fd1\u5e74\u3001Windows\u306e\u6a19\u6e96\u30e1\u30fc\u30eb\u74b0\u5883\u306f\u300c\u65b0\u3057\u3044Outlook\uff08new 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class=\"list04\">\n<ul>\n<li>\u30d6\u30e9\u30a6\u30b6\u306eWeb\u7248Outlook\u3067\u30ed\u30b0\u30a4\u30f3\u3057\u3001\u30a2\u30d7\u30ea\u56fa\u6709\u306e\u554f\u984c\u304b\u3069\u3046\u304b\u5207\u308a\u5206\u3051\u308b<\/li>\n<li>\u4f1a\u793e\u306e\u30e1\u30fc\u30eb\uff08Microsoft 365\uff09\u306a\u3089\u3001IT\u7ba1\u7406\u8005\u306b\u691c\u75ab\u30fb\u30d5\u30a3\u30eb\u30bf\u30fc\u30dd\u30ea\u30b7\u30fc\u306e\u78ba\u8a8d\u3092\u4f9d\u983c\u3059\u308b<\/li>\n<li>\u9001\u4fe1\u8005\u306b\u30a8\u30e9\u30fc\u30e1\u30fc\u30eb\u306e\u6709\u7121\u3092\u78ba\u8a8d\u3057\u3066\u3082\u3089\u3044\u3001\u30a8\u30e9\u30fc\u304c\u3042\u308c\u3070\u672c\u8a18\u4e8b\u306e\u5f8c\u534a\u3092\u9001\u4fe1\u8005\u306b\u5171\u6709\u3059\u308b<\/li>\n<\/ul>\n<\/div>\n<p>\u30b5\u30fc\u30d0\u30fc\u5074\u3067\u62d2\u5426\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u53d7\u4fe1\u5074\u3067\u3067\u304d\u308b\u5bfe\u51e6\u306b\u306f\u9650\u754c\u304c\u3042\u308a\u307e\u3059\u3002\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u306f\u9001\u4fe1\u8005\u5074\u306e\u5bfe\u5fdc\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<h2 id=\"sender-causes\" style=\"scroll-margin-top: 90px;\">\u3010\u9001\u4fe1\u8005\u5411\u3051\u3011Outlook\u5b9b\u306e\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u539f\u56e0\u306e\u5168\u4f53\u50cf<\/h2>\n<p>\u3053\u3053\u304b\u3089\u306f\u3001\u30e1\u30eb\u30de\u30ac\u3084\u901a\u77e5\u30e1\u30fc\u30eb\u306a\u3069\u3092Outlook\u7cfb\u30a2\u30c9\u30ec\u30b9\uff08outlook.com\uff0foutlook.jp\uff0fhotmail.com\u306a\u3069\uff09\u5b9b\u306b\u4e00\u6589\u9001\u4fe1\u3057\u3066\u3044\u308b\u4f01\u696d\u30fb\u62c5\u5f53\u8005\u5411\u3051\u306e\u89e3\u8aac\u3067\u3059\u3002<\/p>\n<p>Outlook\u5b9b\u306e\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u539f\u56e0\u306f\u5927\u304d\u304f\u6b21\u306e6\u3064\u306b\u5206\u985e\u3067\u304d\u307e\u3059\u3002<\/p>\n<div style=\"overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 24px 0; border-radius: 6px;\">\n<table style=\"width: 100%; border-collapse: collapse; font-size: 15px; line-height: 1.7; min-width: 640px;\">\n<thead>\n<tr>\n<th style=\"background-color: #c12620; color: #ffffff; padding: 12px 14px; text-align: left; border: 1px solid #a81f1a; font-weight: bold; white-space: nowrap;\">\u5206\u985e<\/th>\n<th style=\"background-color: #c12620; color: #ffffff; padding: 12px 14px; text-align: left; border: 1px solid #a81f1a; font-weight: bold; white-space: nowrap;\">\u4e3b\u306a\u539f\u56e0<\/th>\n<th style=\"background-color: #c12620; color: #ffffff; padding: 12px 14px; text-align: left; border: 1px solid #a81f1a; font-weight: bold; white-space: nowrap;\">\u5178\u578b\u7684\u306a\u75c7\u72b6<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background-color: #ffffff;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top; font-weight: bold;\">\u2460\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u4e0d\u5099<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">SPF\u30fbDKIM\u30fbDMARC\u672a\u8a2d\u5b9a\uff0f\u8a2d\u5b9a\u30df\u30b9\uff0f\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u4e0d\u4e00\u81f4<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u8ff7\u60d1\u30e1\u30fc\u30eb\u884c\u304d\u3001550 5.7.515\u30a8\u30e9\u30fc<\/td>\n<\/tr>\n<tr style=\"background-color: #fbf3f2;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top; font-weight: bold;\">\u2461\u9001\u4fe1\u5143\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u4f4e\u4e0b<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">Microsoft\u30d6\u30ed\u30c3\u30af\u30ea\u30b9\u30c8\u3078\u306eIP\u767b\u9332\u3001\u5916\u90e8\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u767b\u9332\u3001\u5171\u6709IP\u306e\u5dfb\u304d\u6dfb\u3048<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">550 5.7.1\uff08S3150\uff09\u30a8\u30e9\u30fc\u3067\u5168\u6ec5<\/td>\n<\/tr>\n<tr style=\"background-color: #ffffff;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top; font-weight: bold;\">\u2462\u914d\u4fe1\u30ea\u30b9\u30c8\u306e\u54c1\u8cea\u554f\u984c<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u7121\u52b9\u30a2\u30c9\u30ec\u30b9\u591a\u6570\u3001\u30b9\u30d1\u30e0\u30c8\u30e9\u30c3\u30d7\u6df7\u5165\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u5831\u544a\u306e\u591a\u767a<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u5230\u9054\u7387\u304c\u3058\u308f\u3058\u308f\u60aa\u5316<\/td>\n<\/tr>\n<tr style=\"background-color: #fbf3f2;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top; font-weight: bold;\">\u2463\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u554f\u984c<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u8aa4\u89e3\u3092\u62db\u304f\u4ef6\u540d\u30fb\u30d8\u30c3\u30c0\u30fc\u3001\u540c\u610f\u306e\u306a\u3044\u914d\u4fe1\u3001\u30b9\u30d1\u30e0\u7684\u306a\u8868\u73fe\u3084\u69cb\u9020<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u7279\u5b9a\u306e\u30e1\u30fc\u30eb\u3060\u3051\u8ff7\u60d1\u30e1\u30fc\u30eb\u884c\u304d<\/td>\n<\/tr>\n<tr style=\"background-color: #ffffff;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top; font-weight: bold;\">\u2464\u914d\u4fe1\u30a4\u30f3\u30d5\u30e9\u30fb\u9001\u4fe1\u65b9\u6cd5\u306e\u554f\u984c<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u9006\u5f15\u304d\uff08PTR\uff09\u4e0d\u4e00\u81f4\u3001TLS\u672a\u5bfe\u5fdc\u3001\u6025\u6fc0\u306a\u914d\u4fe1\u91cf\u306e\u5897\u52a0<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u9045\u5ef6\u3001\u65ad\u7d9a\u7684\u306a\u30d6\u30ed\u30c3\u30af<\/td>\n<\/tr>\n<tr style=\"background-color: #fbf3f2;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top; font-weight: bold;\">\u2465\u53d7\u4fe1\u8005\u5074\u306e\u8981\u56e0<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u500b\u4eba\u306e\u53d7\u4fe1\u62d2\u5426\u8a2d\u5b9a\u3001Microsoft 365\u7d44\u7e54\u306e\u30dd\u30ea\u30b7\u30fc<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u7279\u5b9a\u306e\u53d7\u4fe1\u8005\u306b\u3060\u3051\u5c4a\u304b\u306a\u3044<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u305d\u308c\u305e\u308c\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u306e\u4e0d\u5099<\/h3>\n<p>\u73fe\u5728\u3001Outlook\u5b9b\u306e\u5230\u9054\u7387\u3092\u5de6\u53f3\u3059\u308b\u6700\u5927\u306e\u8981\u56e0\u304c<strong>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c<\/strong>\u3067\u3059\u3002\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3068\u306f\u3001\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143\u304c\u6b63\u3057\u3044\u3082\u306e\u3067\u3042\u308a\u3001\u7b2c\u4e09\u8005\u306b\u3088\u308b\u306a\u308a\u3059\u307e\u3057\u3067\u306f\u306a\u3044\u3068\u8a3c\u660e\u3059\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3001\u4e0b\u8a183\u3064\u304c\u4ee3\u8868\u7684\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>SPF\uff08Sender Policy Framework\uff09<\/strong>\uff1a\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u3092\u8a31\u53ef\u3055\u308c\u305f\u30b5\u30fc\u30d0\u30fc\uff08IP\u30a2\u30c9\u30ec\u30b9\uff09\u3092DNS\u306b\u516c\u958b\u3057\u3001\u9001\u4fe1\u5143\u306e\u6b63\u5f53\u6027\u3092\u8a3c\u660e\u3059\u308b\u4ed5\u7d44\u307f<\/li>\n<li><strong>DKIM\uff08DomainKeys Identified Mail\uff09<\/strong>\uff1a\u30e1\u30fc\u30eb\u306b\u96fb\u5b50\u7f72\u540d\u3092\u4ed8\u4e0e\u3057\u3001\u9001\u4fe1\u8005\u306e\u6b63\u5f53\u6027\u3068\u5185\u5bb9\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b\u4ed5\u7d44\u307f<\/li>\n<li><strong>DMARC\uff08Domain-based Message Authentication, Reporting and Conformance\uff09<\/strong>\uff1aSPF\u30fbDKIM\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u3092\u3069\u3046\u6271\u3046\u304b\uff08\u53d7\u4fe1\u30fb\u9694\u96e2\u30fb\u62d2\u5426\uff09\u3092\u53d7\u4fe1\u5074\u306b\u6307\u793a\u3059\u308b\u4ed5\u7d44\u307f<\/li>\n<\/ul>\n<\/div>\n<p>\u3053\u308c\u3089\u304c\u672a\u8a2d\u5b9a\u3001\u3042\u308b\u3044\u306f\u8a2d\u5b9a\u30df\u30b9\u304c\u3042\u308b\u3068\u3001Outlook\u306f\u305d\u306e\u30e1\u30fc\u30eb\u3092\u300c\u306a\u308a\u3059\u307e\u3057\u306e\u7591\u3044\u304c\u3042\u308b\u300d\u3068\u5224\u65ad\u3057\u307e\u3059\u3002<\/p>\n<p>SPF\u30fbDKIM\u30fbDMARC\u305d\u308c\u305e\u308c\u306e\u4ed5\u7d44\u307f\u3068\u3001\u78ba\u5b9f\u306b\u30e1\u30fc\u30eb\u3092\u5c4a\u3051\u308b\u305f\u3081\u306e\u5f79\u5272\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u56f3\u89e3\u3068\u3068\u3082\u306b\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n  <div class=\"blogcard\">\n  <a href=\"\/blog\/no-delivery\/identification\">\n   <div class=\"blogcard_thumbnail\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2025\/07\/WEBCAS\u306e\u30b3\u30d4\u30fc.png\" alt=\"\u3010\u30e1\u30fc\u30eb\u306e\u8eab\u5206\u8a3c\u3011SPF\u30fbDKIM\u30fbDMARC\u3067\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u3092\u9632\u304e\u3001\u30e1\u30fc\u30eb\u3092\u78ba\u5b9f\u306b\u5c4a\u3051\u308b\u65b9\u6cd5\" width=\"90\" height=\"47\" \/><\/div>\n   <div class=\"blogcard_content\">\n    <div class=\"blogcard_title\">\u3010\u30e1\u30fc\u30eb\u306e\u8eab\u5206\u8a3c\u3011SPF\u30fbDKIM\u30fbDMARC\u3067\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u3092\u9632\u304e\u3001\u30e1\u30fc\u30eb\u3092\u78ba\u5b9f\u306b\u5c4a\u3051\u308b\u65b9\u6cd5<\/div>\n    <div class=\"blogcard_excerpt\">\u300c\u8ff7\u60d1\u30e1\u30fc\u30eb\u3058\u3083\u306a\u3044\u306e\u306b\u3001\u306a\u305c\u304b\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044..\u3002\u300d \u300c\u304a\u5ba2\u69d8\u306b\u9001\u3063\u305f\u5927\u4e8b\u306a\u30e1\u30fc\u30eb\u304c\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u3063\u3066\u3057\u307e\u3046..\u3002\u300d \u3053\u3093\u306a\u60a9\u307f\u3092\u2026<\/div>\n   <\/div>\n   <div class=\"clear\"><\/div>\n  <\/a>\n  <\/div>\n<p>\u3088\u304f\u3042\u308b\u8a2d\u5b9a\u30df\u30b9\u3068\u3057\u3066\u898b\u843d\u3068\u3055\u308c\u3084\u3059\u3044\u306e\u304c\u3001\u300c\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\uff08\u6574\u5408\u6027\uff09\u300d\u306e\u4e0d\u4e00\u81f4\u3067\u3059\u3002DMARC\u3067\u306f\u3001\u5dee\u51fa\u4eba\uff08From\uff09\u306b\u8868\u793a\u3055\u308c\u308b\u30c9\u30e1\u30a4\u30f3\u3068\u3001SPF\u307e\u305f\u306fDKIM\u3067\u8a8d\u8a3c\u3055\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\uff08\u6574\u5408\uff09\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001SPF\u3084DKIM\u81ea\u4f53\u306f\u300c\u5408\u683c\u300d\u3057\u3066\u3044\u3066\u3082\u3001\u8a8d\u8a3c\u3055\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u304cFrom\u30c9\u30e1\u30a4\u30f3\u3068\u7570\u306a\u308b\u305f\u3081\u306b\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304c\u53d6\u308c\u305a\u3001DMARC\u3068\u3057\u3066\u306f\u8a55\u4fa1\u3055\u308c\u306a\u3044\u3001\u3068\u3044\u3046\u4e8b\u614b\u304c\u8d77\u3053\u308a\u304c\u3061\u3067\u3059\u3002\u300c\u8a8d\u8a3c\u306f\u901a\u3063\u3066\u3044\u308b\u306f\u305a\u306a\u306e\u306b\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u3055\u308c\u308b\u300d\u3068\u304d\u306f\u3001\u307e\u305a\u3053\u306e\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u7591\u3046\u306e\u304c\u5b9a\u77f3\u3067\u3059\u3002<\/p>\n<p>\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u306e\u4ed5\u7d44\u307f\u3084\u3088\u304f\u3042\u308b\u5931\u6557\u30d1\u30bf\u30fc\u30f3\u3001\u5177\u4f53\u7684\u306a\u5bfe\u51e6\u6cd5\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n  <div class=\"blogcard\">\n  <a href=\"\/blog\/spam\/dmarc-alignment\">\n   <div class=\"blogcard_thumbnail\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2026\/03\/dmarc-alignment.jpg\" alt=\"DMARC\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3068\u306f\uff1fSPF\u30fbDKIM\u3068\u306e\u95a2\u4fc2\u3084\u8a2d\u5b9a\u65b9\u6cd5\u3001\u5931\u6557\u539f\u56e0\u3068\u5bfe\u7b56\u3092\u89e3\u8aac\" width=\"90\" height=\"49\" \/><\/div>\n   <div class=\"blogcard_content\">\n    <div class=\"blogcard_title\">DMARC\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3068\u306f\uff1fSPF\u30fbDKIM\u3068\u306e\u95a2\u4fc2\u3084\u8a2d\u5b9a\u65b9\u6cd5\u3001\u5931\u6557\u539f\u56e0\u3068\u5bfe\u7b56\u3092\u89e3\u8aac<\/div>\n    <div class=\"blogcard_excerpt\">\u30e1\u30fc\u30eb\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3068\u3057\u3066\u300cSPF\u3092\u8a2d\u5b9a\u3057\u305f\u300d\u300cDKIM\u3082\u5c0e\u5165\u3057\u305f\u300d\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001DMARC\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u3066\u30e1\u30fc\u30eb\u304c\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u3063\u2026<\/div>\n   <\/div>\n   <div class=\"clear\"><\/div>\n  <\/a>\n  <\/div>\n<h3>\u9001\u4fe1\u5143\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\uff08IP\u30fb\u30c9\u30e1\u30a4\u30f3\u306e\u8a55\u4fa1\uff09\u306e\u4f4e\u4e0b<\/h3>\n<p>Microsoft\u306f\u9001\u4fe1\u5143\u306eIP\u30a2\u30c9\u30ec\u30b9\u3084\u30c9\u30e1\u30a4\u30f3\u3054\u3068\u306b\u300c\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\uff08\u8a55\u4fa1\uff09\u300d\u3092\u7ba1\u7406\u3057\u3066\u304a\u308a\u3001\u8a55\u4fa1\u304c\u4e00\u5b9a\u4ee5\u4e0b\u306b\u306a\u308b\u3068\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u884c\u304d\u3001\u3055\u3089\u306b\u60aa\u5316\u3059\u308b\u3068\u53d7\u4fe1\u81ea\u4f53\u3092\u62d2\u5426\u3057\u307e\u3059\u3002<\/p>\n<p>\u4ee3\u8868\u7684\u306a\u306e\u304c\u3001Microsoft\u306e\u30d6\u30ed\u30c3\u30af\u30ea\u30b9\u30c8\u306bIP\u30a2\u30c9\u30ec\u30b9\u304c\u767b\u9332\u3055\u308c\u308b\u30b1\u30fc\u30b9\u3067\u3059\u3002\u3053\u306e\u5834\u5408\u3001\u6b21\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u30e1\u30fc\u30eb\u304c\u8fd4\u3063\u3066\u304d\u307e\u3059\u3002<\/p>\n<blockquote><p>550 5.7.1 Unfortunately, messages from [IP\u30a2\u30c9\u30ec\u30b9] weren&#8217;t sent. Please contact your Internet service provider since part of their network is on our block list (S3150).<\/p><\/blockquote>\n<p>\u6ce8\u610f\u3059\u3079\u304d\u306f\u3001<strong>\u81ea\u793e\u306b\u975e\u304c\u306a\u304f\u3066\u3082\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308b<\/strong>\u70b9\u3067\u3059\u3002\u5171\u6709\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u3084\u5171\u6709IP\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u74b0\u5883\u3067\u306f\u3001\u540c\u3058IP\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3046\u4ed6\u306e\u5229\u7528\u8005\u304c\u30b9\u30d1\u30e0\u7684\u306a\u914d\u4fe1\u3092\u884c\u3046\u3068\u3001IP\u30a2\u30c9\u30ec\u30b9\u3054\u3068\u30d6\u30ed\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u767b\u9332\u3055\u308c\u308b\u300c\u5dfb\u304d\u6dfb\u3048\u300d\u304c\u8d77\u3053\u308a\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001Microsoft\u72ec\u81ea\u306e\u30ea\u30b9\u30c8\u3068\u306f\u5225\u306b\u3001Spamhaus\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u5916\u90e8\u306e\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\uff08RBL\/DNSBL\uff09\u3078\u306e\u767b\u9332\u3082\u5230\u9054\u7387\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002<\/p>\n<h3>\u914d\u4fe1\u30ea\u30b9\u30c8\u306e\u54c1\u8cea\u554f\u984c<\/h3>\n<p>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u5b8c\u74a7\u306b\u6574\u3048\u3066\u3082\u3001\u914d\u4fe1\u30ea\u30b9\u30c8\u306e\u54c1\u8cea\u304c\u60aa\u3051\u308c\u3070\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u4e0b\u304c\u308a\u7d9a\u3051\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u6b21\u306e3\u3064\u3067\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>\u7121\u52b9\u30a2\u30c9\u30ec\u30b9\u3078\u306e\u914d\u4fe1\uff08\u9ad8\u30d0\u30a6\u30f3\u30b9\u7387\uff09<\/strong>\uff1a\u5b58\u5728\u3057\u306a\u3044\u30a2\u30c9\u30ec\u30b9\u3078\u9001\u308a\u7d9a\u3051\u308b\u3068\u300c\u30ea\u30b9\u30c8\u7ba1\u7406\u304c\u3067\u304d\u3066\u3044\u306a\u3044\u9001\u4fe1\u8005\u300d\u3068\u8a55\u4fa1\u3055\u308c\u308b<\/li>\n<li><strong>\u30b9\u30d1\u30e0\u30c8\u30e9\u30c3\u30d7\u3078\u306e\u914d\u4fe1<\/strong>\uff1aMicrosoft\u304c\u7ba1\u7406\u3059\u308b\u300c\u30e1\u30fc\u30eb\u3092\u4e00\u5207\u8cfc\u8aad\u3057\u306a\u3044\u306f\u305a\u306e\u30a2\u30c9\u30ec\u30b9\uff08\u30c8\u30e9\u30c3\u30d7\u30a2\u30ab\u30a6\u30f3\u30c8\uff09\u300d\u306b\u9001\u3063\u3066\u3057\u307e\u3046\u3068\u3001\u30ea\u30b9\u30c8\u306e\u5165\u624b\u7d4c\u8def\u3084\u7ba1\u7406\u4f53\u5236\u3092\u5f37\u304f\u7591\u308f\u308c\u308b<\/li>\n<li><strong>\u8ff7\u60d1\u30e1\u30fc\u30eb\u5831\u544a\uff08\u82e6\u60c5\uff09\u306e\u591a\u767a<\/strong>\uff1a\u53d7\u4fe1\u8005\u304c\u300c\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u3057\u3066\u5831\u544a\u300d\u3059\u308b\u5272\u5408\u304c\u9ad8\u3044\u3068\u3001\u8a55\u4fa1\u306f\u6025\u901f\u306b\u60aa\u5316\u3059\u308b<\/li>\n<\/ul>\n<\/div>\n<p>\u30b9\u30d1\u30e0\u30c8\u30e9\u30c3\u30d7\u306f\u3001\u53e4\u3044\u30ea\u30b9\u30c8\u3084\u8cfc\u5165\u3057\u305f\u30ea\u30b9\u30c8\u3001\u9000\u4f1a\u51e6\u7406\u3092\u3057\u3066\u3044\u306a\u3044\u30ea\u30b9\u30c8\u306b\u6df7\u5165\u3057\u3084\u3059\u304f\u3001\u4e00\u5ea6\u30d2\u30c3\u30c8\u3059\u308b\u3068\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u56de\u5fa9\u306b\u9577\u3044\u6642\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u554f\u984c<\/h3>\n<p>\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u3082\u5230\u9054\u7387\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002\u307e\u305a\u62bc\u3055\u3048\u308b\u3079\u304d\u306f\u3001Microsoft\u304c\u9001\u4fe1\u8005\u306b\u6c42\u3081\u3066\u3044\u308b<strong>\u300c\u900f\u660e\u6027\u306e\u3042\u308b\u914d\u4fe1\u6163\u884c\uff08Transparent Mailing Practices\uff09\u300d<\/strong>\u3067\u3059\u3002Microsoft\u306f\u5177\u4f53\u7684\u306b\u3001\u6b63\u78ba\u306a\u4ef6\u540d\u3092\u4f7f\u3046\u3053\u3068\u3001\u8aa4\u89e3\u3092\u62db\u304f\uff08\u5185\u5bb9\u3068\u4e00\u81f4\u3057\u306a\u3044\uff09\u30d8\u30c3\u30c0\u30fc\u3092\u4f7f\u308f\u306a\u3044\u3053\u3068\u3001\u305d\u3057\u3066\u53d7\u4fe1\u8005\u306e\u540c\u610f\u3092\u5f97\u305f\u3046\u3048\u3067\u914d\u4fe1\u3059\u308b\u3053\u3068\u3092\u6c42\u3081\u3066\u3044\u307e\u3059\u3002\u4ef6\u540d\u3068\u672c\u6587\u306e\u5185\u5bb9\u304c\u98df\u3044\u9055\u3063\u3066\u3044\u305f\u308a\u3001\u9001\u4fe1\u8005\u3092\u507d\u308b\u3088\u3046\u306a\u30d8\u30c3\u30c0\u30fc\u306b\u306a\u3063\u3066\u3044\u305f\u308a\u3059\u308b\u3068\u3001\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u8a55\u4fa1\u3092\u4e0b\u3052\u308b\u8981\u56e0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306b\u52a0\u3048\u3066\u3001Microsoft\u304c\u660e\u793a\u7684\u306b\u8981\u4ef6\u5316\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u3082\u306e\u306e\u3001\u4e00\u822c\u7684\u306b\u30b9\u30d1\u30e0\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u8a55\u4fa1\u306b\u5f71\u97ff\u3059\u308b\u3068\u3055\u308c\u308b\u8981\u7d20\u3082\u3042\u308a\u307e\u3059\u3002\u904e\u5ea6\u306a\u717d\u308a\u8868\u73fe\u306e\u591a\u7528\u3001\u8a55\u4fa1\u306e\u4f4e\u3044\u30c9\u30e1\u30a4\u30f3\u3078\u306e\u30ea\u30f3\u30af\u3001\u753b\u50cf\u306e\u307f\u3067\u69cb\u6210\u3055\u308c\u672c\u6587\u30c6\u30ad\u30b9\u30c8\u304c\u307b\u3068\u3093\u3069\u306a\u3044HTML\u30e1\u30fc\u30eb\u3001\u5d29\u308c\u305fHTML\u69cb\u9020\u306a\u3069\u3067\u3059\u3002\u3053\u308c\u3089\u306f\u300c\u5fc5\u9808\u8981\u4ef6\u300d\u3067\u306f\u306a\u304f\u3001\u3042\u304f\u307e\u3067\u5230\u9054\u7387\u3092\u4e0b\u3052\u306a\u3044\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3068\u3057\u3066\u6349\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u306a\u304a\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u5358\u4f53\u3067\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u30b1\u30fc\u30b9\u306f\u3001\u8a8d\u8a3c\u3084\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u554f\u984c\u3068\u6bd4\u3079\u308b\u3068\u76f8\u5bfe\u7684\u306b\u5c11\u6570\u3067\u3059\u3002\u300c\u7279\u5b9a\u306e\u30e1\u30fc\u30eb\u3060\u3051\u5c4a\u304b\u306a\u3044\u300d\u5834\u5408\u306b\u7591\u3046\u3079\u304d\u5206\u985e\u3068\u8003\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u914d\u4fe1\u30a4\u30f3\u30d5\u30e9\u30fb\u9001\u4fe1\u65b9\u6cd5\u306e\u554f\u984c<\/h3>\n<p>\u6280\u8853\u30a4\u30f3\u30d5\u30e9\u9762\u3067\u306f\u3001\u6b21\u306e\u70b9\u304c\u30c1\u30a7\u30c3\u30af\u5bfe\u8c61\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>\u9006\u5f15\u304d\uff08PTR\u30ec\u30b3\u30fc\u30c9\uff09\u306e\u8a2d\u5b9a<\/strong>\uff1a\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u30db\u30b9\u30c8\u540d\u3092\u9006\u5f15\u304d\u3067\u304d\u306a\u3044\u3001\u307e\u305f\u306f\u6b63\u5f15\u304d\u3068\u4e00\u81f4\u3057\u306a\u3044\u5834\u5408\u3001\u8a55\u4fa1\u304c\u4e0b\u304c\u308b<\/li>\n<li><strong>TLS\u306b\u3088\u308b\u6697\u53f7\u5316<\/strong>\uff1a\u9001\u4fe1\u6642\u306eTLS\u63a5\u7d9a\u306f\u73fe\u5728\u306e\u6a19\u6e96\u8981\u4ef6<\/li>\n<li><strong>\u6025\u6fc0\u306a\u914d\u4fe1\u91cf\u306e\u5897\u52a0<\/strong>\uff1a\u65b0\u3057\u3044IP\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u3044\u304d\u306a\u308a\u5927\u91cf\u914d\u4fe1\u3059\u308b\u3068\u3001\u5b9f\u7e3e\uff08\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\uff09\u304c\u306a\u3044\u305f\u3081\u5236\u9650\u3055\u308c\u3084\u3059\u3044\u3002\u5c11\u91cf\u304b\u3089\u5f90\u3005\u306b\u5897\u3084\u3059\u300c\u30a6\u30a9\u30fc\u30e0\u30a2\u30c3\u30d7\u300d\u304c\u5fc5\u8981<\/li>\n<\/ul>\n<\/div>\n<h3>\u53d7\u4fe1\u8005\u5074\u306e\u8981\u56e0<\/h3>\n<p>\u6700\u5f8c\u306b\u3001\u9001\u4fe1\u5074\u306b\u554f\u984c\u304c\u306a\u304f\u3066\u3082\u3001\u53d7\u4fe1\u8005\u500b\u4eba\u306e\u53d7\u4fe1\u62d2\u5426\u8a2d\u5b9a\u3084\u3001Microsoft 365\u3092\u4f7f\u3046\u7d44\u7e54\u5074\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30dd\u30ea\u30b7\u30fc\uff08\u691c\u75ab\uff09\u3067\u6b62\u307e\u3063\u3066\u3044\u308b\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u5b9a\u306e\u53d7\u4fe1\u8005\u30fb\u7279\u5b9a\u306e\u4f01\u696d\u30c9\u30e1\u30a4\u30f3\u306b\u3060\u3051\u5c4a\u304b\u306a\u3044\u5834\u5408\u306f\u3001\u3053\u306e\u8a18\u4e8b\u306e\u524d\u534a\u306e\u5185\u5bb9\u3092\u5148\u65b9\u306b\u78ba\u8a8d\u3057\u3066\u3082\u3089\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>\u30102025\u5e745\u6708\u65bd\u884c\u3011Outlook\u306e\u9001\u4fe1\u8005\u8981\u4ef6\uff5cSPF\u30fbDKIM\u30fbDMARC\u304c\u5fc5\u9808\u306b<\/h2>\n<p>\u4e00\u6589\u9001\u4fe1\u8005\u306b\u3068\u3063\u3066\u73fe\u5728\u6700\u3082\u91cd\u8981\u306a\u306e\u304c\u3001<strong>2025\u5e745\u67085\u65e5\u306b\u65bd\u884c\u3055\u308c\u305fOutlook\u306e\u65b0\u3057\u3044\u9001\u4fe1\u8005\u8981\u4ef6<\/strong>\u3067\u3059\u3002<\/p>\n<p>Microsoft\u306f2025\u5e744\u6708\u3001Outlook\u306e\u500b\u4eba\u5411\u3051\u30c9\u30e1\u30a4\u30f3\uff08outlook.com\uff0fhotmail.com\uff0flive.com\u306a\u3069\uff09\u5b9b\u3066\u306b1\u65e55,000\u901a\u4ee5\u4e0a\u306e\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u306b\u5bfe\u3057\u3001\u4ee5\u4e0b\u3092\u5fc5\u9808\u3068\u3059\u308b\u3053\u3068\u3092\u767a\u8868\u3057\u307e\u3057\u305f\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>SPF<\/strong>\uff1a\u8a8d\u8a3c\u306b\u5408\u683c\uff08Pass\uff09\u3059\u308b\u3053\u3068<\/li>\n<li><strong>DKIM<\/strong>\uff1a\u8a8d\u8a3c\u306b\u5408\u683c<span>\uff08Pass\uff09<\/span>\u3059\u308b\u3053\u3068<\/li>\n<li><strong>DMARC<\/strong>\uff1a\u6700\u4f4e\u3067\u3082\u300cp=none\u300d\u30dd\u30ea\u30b7\u30fc\u3067\u8a2d\u5b9a\u3057\u3001SPF\u307e\u305f\u306fDKIM\uff08\u671b\u307e\u3057\u304f\u306f\u4e21\u65b9\uff09\u3068\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304c\u53d6\u308c\u3066\u3044\u308b\u3053\u3068<\/li>\n<\/ul>\n<\/div>\n<p>\u65bd\u884c\u5f8c\u3001\u8981\u4ef6\u3092\u6e80\u305f\u3055\u306a\u3044\u5927\u91cf\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u306e\u30e1\u30fc\u30eb\u306f\u3001\u307e\u305a\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u307e\u3059\u3002\u3055\u3089\u306bMicrosoft\u306f\u3001\u975e\u6e96\u62e0\u30e1\u30fc\u30eb\u3092\u300c550; 5.7.515 Access denied\u300d\u306e\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3067\u53d7\u4fe1\u62d2\u5426\u3059\u308b\u65b9\u91dd\u3082\u516c\u8868\u3057\u3066\u304a\u308a\u3001\u672a\u5bfe\u5fdc\u306e\u307e\u307e\u653e\u7f6e\u3059\u308b\u30ea\u30b9\u30af\u306f\u6642\u9593\u3068\u3068\u3082\u306b\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3042\u308f\u305b\u3066Microsoft\u306f\u3001\u8a8d\u8a3c\u4ee5\u5916\u306b\u3082\u6b21\u306e\u3088\u3046\u306a\u9001\u4fe1\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u6c42\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>\u5dee\u51fa\u4eba\uff08From\uff09\u3084\u8fd4\u4fe1\u5148\uff08Reply-To\uff09\u306b\u3001\u5b9f\u5728\u3057\u8fd4\u4fe1\u3092\u53d7\u3051\u53d6\u308c\u308b\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3046\u3053\u3068<\/li>\n<li>\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30e1\u30fc\u30eb\u30fb\u4e00\u6589\u9001\u4fe1\u30e1\u30fc\u30eb\u306b\u306f\u3001\u660e\u78ba\u3067\u308f\u304b\u308a\u3084\u3059\u3044\u914d\u4fe1\u505c\u6b62\uff08\u30aa\u30d7\u30c8\u30a2\u30a6\u30c8\uff09\u624b\u6bb5\u3092\u8a2d\u3051\u308b\u3053\u3068<\/li>\n<li>\u7121\u52b9\u30a2\u30c9\u30ec\u30b9\u3092\u5b9a\u671f\u7684\u306b\u30ea\u30b9\u30c8\u304b\u3089\u9664\u53bb\u3057\u3001\u30d0\u30a6\u30f3\u30b9\u3068\u82e6\u60c5\u3092\u6e1b\u3089\u3059\u3053\u3068<\/li>\n<li>\u8aa4\u89e3\u3092\u62db\u304f\u4ef6\u540d\u3084\u30d8\u30c3\u30c0\u30fc\u3092\u4f7f\u308f\u305a\u3001\u540c\u610f\u3092\u5f97\u305f\u76f8\u624b\u306b\u306e\u307f\u914d\u4fe1\u3059\u308b\u3053\u3068<\/li>\n<\/ul>\n<\/div>\n<p>\u300c1\u65e55,000\u901a\u672a\u6e80\u3060\u304b\u3089\u95a2\u4fc2\u306a\u3044\u300d\u3068\u8003\u3048\u308b\u306e\u306f\u65e9\u8a08\u3067\u3059\u3002Microsoft\u306f\u3059\u3079\u3066\u306e\u9001\u4fe1\u8005\u306b\u5bfe\u3057\u3066\u540c\u8981\u4ef6\u3078\u306e\u6e96\u62e0\u3092\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3068\u3057\u3066\u63a8\u5968\u3057\u3066\u304a\u308a\u3001\u5c06\u6765\u7684\u306a\u9069\u7528\u7bc4\u56f2\u306e\u62e1\u5927\u3082\u898b\u8fbc\u307e\u308c\u307e\u3059\u3002Gmail\u304c2024\u5e74\u306b\u5c0e\u5165\u3057\u305f\u9001\u4fe1\u8005\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3068\u307b\u307c\u540c\u3058\u6d41\u308c\u3067\u3042\u308a\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306f\u3082\u306f\u3084\u300c\u5927\u91cf\u9001\u4fe1\u8005\u3060\u3051\u306e\u8ab2\u984c\u300d\u3067\u306f\u306a\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>Outlook\u306e\u9001\u4fe1\u8005\u8981\u4ef6\u306e\u8a73\u7d30\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u3082\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n  <div class=\"blogcard\">\n  <a href=\"\/blog\/mail-delivery\/outlook-requirements\">\n   <div class=\"blogcard_thumbnail\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2025\/04\/outlook-requirements.png\" alt=\"\u30102025\u5e745\u6708\u65bd\u884c\u3011Outlook\u30e1\u30fc\u30eb\u9001\u4fe1\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u5909\u66f4\u306e\u5168\u5bb9\u3068\u5230\u9054\u7387\u3092\u5b88\u308b\u5fc5\u9808\u5bfe\u7b56\" width=\"90\" height=\"47\" \/><\/div>\n   <div class=\"blogcard_content\">\n    <div class=\"blogcard_title\">\u30102025\u5e745\u6708\u65bd\u884c\u3011Outlook\u30e1\u30fc\u30eb\u9001\u4fe1\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u5909\u66f4\u306e\u5168\u5bb9\u3068\u5230\u9054\u7387\u3092\u5b88\u308b\u5fc5\u9808\u5bfe\u7b56<\/div>\n    <div class=\"blogcard_excerpt\">2024\u5e74\u306b\u5b9f\u65bd\u3055\u308c\u305fGmail\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u5909\u66f4\u306b\u3088\u308a\u3001\u591a\u304f\u306e\u4f01\u696d\u304c\u30e1\u30fc\u30eb\u914d\u4fe1\u74b0\u5883\u306e\u898b\u76f4\u3057\u3092\u8feb\u3089\u308c\u307e\u3057\u305f\u3002\u305d\u3057\u3066\u305d\u308c\u306b\u7d9a\u304f\u5f62\u3067Microsof\u2026<\/div>\n   <\/div>\n   <div class=\"clear\"><\/div>\n  <\/a>\n  <\/div>\n<h2>SNDS\u3068\u306f\uff1fOutlook\u3078\u306e\u5230\u9054\u7387\u3092\u53ef\u8996\u5316\u3059\u308bMicrosoft\u516c\u5f0f\u30c4\u30fc\u30eb<\/h2>\n<p>Outlook\u5b9b\u306e\u5230\u9054\u7387\u6539\u5584\u3067\u5fc5\u305a\u6d3b\u7528\u3057\u305f\u3044\u306e\u304c\u3001Microsoft\u304c\u7121\u6599\u3067\u63d0\u4f9b\u3059\u308b<strong>\u300cSNDS\uff08Smart Network Data Services\uff09\u300d<\/strong>\u3067\u3059\u3002<\/p>\n<p>SNDS\u3068\u306f\u3001\u81ea\u793e\u306e\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u304cMicrosoft\uff08Outlook.com\uff09\u304b\u3089\u3069\u3046\u8a55\u4fa1\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3067\u304d\u308b\u3001\u9001\u4fe1\u8005\u5411\u3051\u306e\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u76e3\u8996\u30c4\u30fc\u30eb\u3067\u3059\u3002Gmail\u306b\u304a\u3051\u308b\u300cGoogle Postmaster Tools\u300d\u306eOutlook\u7248\u3068\u8003\u3048\u308b\u3068\u30a4\u30e1\u30fc\u30b8\u3057\u3084\u3059\u3044\u3067\u3057\u3087\u3046\u3002Outlook.com\u3078\u306e\u5230\u9054\u7387\u306f\u9001\u4fe1\u5143\u306e\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u306b\u57fa\u3065\u3044\u3066\u6c7a\u307e\u308b\u305f\u3081\u3001SNDS\u306e\u30c7\u30fc\u30bf\u306f\u5230\u9054\u7387\u6539\u5584\u306e\u51fa\u767a\u70b9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>SNDS\u3067\u78ba\u8a8d\u3067\u304d\u308b\u30c7\u30fc\u30bf<\/h3>\n<p>SNDS\u306bIP\u30a2\u30c9\u30ec\u30b9\u3092\u767b\u9332\u3059\u308b\u3068\u3001\u305d\u306eIP\u304b\u3089Outlook.com\u5b9b\u306b\u9001\u3089\u308c\u305f\u30e1\u30fc\u30eb\u306b\u3064\u3044\u3066\u3001\u65e5\u6b21\u3067\u6b21\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<div style=\"overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 24px 0; border-radius: 6px;\">\n<table style=\"width: 100%; border-collapse: collapse; font-size: 15px; line-height: 1.7; min-width: 640px;\">\n<thead>\n<tr>\n<th style=\"background-color: #c12620; color: #ffffff; padding: 12px 14px; text-align: left; border: 1px solid #a81f1a; font-weight: bold; white-space: nowrap;\">\u9805\u76ee<\/th>\n<th style=\"background-color: #c12620; color: #ffffff; padding: 12px 14px; text-align: left; border: 1px solid #a81f1a; font-weight: bold; white-space: nowrap;\">\u5185\u5bb9<\/th>\n<th style=\"background-color: #c12620; color: #ffffff; padding: 12px 14px; text-align: left; border: 1px solid #a81f1a; font-weight: bold; white-space: nowrap;\">\u898b\u308b\u3079\u304d\u30dd\u30a4\u30f3\u30c8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background-color: #ffffff;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top; font-weight: bold;\">\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u671f\u9593<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u305d\u306eIP\u304b\u3089\u9001\u4fe1\u304c\u78ba\u8a8d\u3055\u308c\u305f\u6642\u9593\u5e2f<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u610f\u56f3\u3057\u306a\u3044\u6642\u9593\u5e2f\u306e\u9001\u4fe1\u304c\u3042\u308c\u3070\u4e0d\u6b63\u5229\u7528\u306e\u7591\u3044<\/td>\n<\/tr>\n<tr style=\"background-color: #fbf3f2;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top; font-weight: bold;\">RCPT\uff0fDATA\u30b3\u30de\u30f3\u30c9\u6570<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u9001\u4fe1\u91cf\u306b\u76f8\u5f53\u3059\u308bSMTP\u30b3\u30de\u30f3\u30c9\u306e\u56de\u6570<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u60f3\u5b9a\u3068\u5927\u304d\u304f\u4e56\u96e2\u3057\u3066\u3044\u306a\u3044\u304b<\/td>\n<\/tr>\n<tr style=\"background-color: #ffffff;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top; font-weight: bold;\">\u30d5\u30a3\u30eb\u30bf\u30fc\u7d50\u679c\uff08\u8272\u8a55\u4fa1\uff09<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u7dd1\u30fb\u9ec4\u30fb\u8d64\u306e3\u6bb5\u968e\u3067\u30b9\u30d1\u30e0\u5224\u5b9a\u7387\u3092\u8868\u793a<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u7dd1\uff08\u30b9\u30d1\u30e0\u738710%\u672a\u6e80\uff09\u3092\u7dad\u6301\u3067\u304d\u3066\u3044\u308b\u304b\u3002\u8d64\u306f90%\u8d85\u304c\u30b9\u30d1\u30e0\u5224\u5b9a\u3055\u308c\u3066\u3044\u308b\u5371\u967a\u4fe1\u53f7<\/td>\n<\/tr>\n<tr style=\"background-color: #fbf3f2;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top; font-weight: bold;\">\u82e6\u60c5\u7387\uff08Complaint Rate\uff09<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u53d7\u4fe1\u8005\u304c\u8ff7\u60d1\u30e1\u30fc\u30eb\u5831\u544a\u3057\u305f\u5272\u5408<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u9ad8\u6b62\u307e\u308a\u3057\u3066\u3044\u308c\u3070\u30ea\u30b9\u30c8\u3068\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u898b\u76f4\u3057\u304c\u5fc5\u8981<\/td>\n<\/tr>\n<tr style=\"background-color: #ffffff;\">\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top; font-weight: bold;\">\u30c8\u30e9\u30c3\u30d7\u30d2\u30c3\u30c8\u6570<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">\u30b9\u30d1\u30e0\u30c8\u30e9\u30c3\u30d7\u5b9b\u306b\u9001\u4fe1\u3055\u308c\u305f\u4ef6\u6570<\/td>\n<td style=\"padding: 12px 14px; border: 1px solid #e2e2e2; vertical-align: top;\">1\u4ef6\u3067\u3082\u3042\u308c\u3070\u30ea\u30b9\u30c8\u306e\u5165\u624b\u7d4c\u8def\u30fb\u7ba1\u7406\u4f53\u5236\u306b\u554f\u984c\u3042\u308a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\u304b\u3089\u3001\u300c\u8a8d\u8a3c\u306f\u901a\u3063\u3066\u3044\u308b\u306e\u306b\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u3055\u308c\u3066\u3044\u308b\u300d\u300c\u30ea\u30b9\u30c8\u306b\u30c8\u30e9\u30c3\u30d7\u304c\u6df7\u5165\u3057\u3066\u3044\u308b\u300d\u3068\u3044\u3063\u305f\u554f\u984c\u3092\u3001\u611f\u899a\u3067\u306f\u306a\u304f\u30c7\u30fc\u30bf\u3067\u7279\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001SNDS\u306e\u5bfe\u8c61\u306fOutlook.com\uff0fHotmail\u306a\u3069\u500b\u4eba\u5411\u3051\u30b5\u30fc\u30d3\u30b9\u5b9b\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3067\u3001Microsoft 365\uff08Exchange Online\uff09\u306e\u4f01\u696d\u30a2\u30ab\u30a6\u30f3\u30c8\u5b9b\u306e\u30c7\u30fc\u30bf\u306f\u542b\u307e\u308c\u307e\u305b\u3093\u3002\u307e\u305f\u30011\u65e5\u3042\u305f\u308a\u306e\u9001\u4fe1\u91cf\u304c\u4e00\u5b9a\u6570\uff08\u76ee\u5b89\u3068\u3057\u3066100\u901a\uff09\u306b\u6e80\u305f\u306a\u3044\u65e5\u306f\u3001\u30c7\u30fc\u30bf\u304c\u8868\u793a\u3055\u308c\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>SNDS\u306e\u767b\u9332\u624b\u9806<\/h3>\n<p>SNDS\u306e\u5229\u7528\u958b\u59cb\u306f\u96e3\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u6b21\u306e\u3082\u306e\u3092\u6e96\u5099\u3057\u3066\u304b\u3089\u767b\u9332\u3092\u9032\u3081\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>Microsoft\u30a2\u30ab\u30a6\u30f3\u30c8\uff08Outlook.com\u3001Microsoft 365\u306a\u3069\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\uff09<\/li>\n<li>\u30e1\u30fc\u30eb\u9001\u4fe1\u306b\u4f7f\u7528\u3057\u3066\u3044\u308bIPv4\u30a2\u30c9\u30ec\u30b9\uff08\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u5229\u7528\u6642\u306f\u30b5\u30fc\u30d3\u30b9\u5074\u306eIP\uff09<\/li>\n<li>\u305d\u306eIP\u306eWHOIS\u60c5\u5831\u306b\u767b\u9332\u3055\u308c\u305f\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\uff08abuse@\u3084postmaster@\u306a\u3069\uff09\u3078\u306e\u30a2\u30af\u30bb\u30b9\u6a29<\/li>\n<\/ul>\n<\/div>\n<p>\u624b\u9806\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ol>\n<li>SNDS\u306e\u30dd\u30fc\u30bf\u30eb\u30b5\u30a4\u30c8\uff08<a href=\"https:\/\/substrate.office.com\/ip-domain-management-snds\/SNDS\" target=\"_blank\" rel=\"noopener\">https:\/\/substrate.office.com\/ip-domain-management-snds\/SNDS<\/a>\uff09\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3001Microsoft\u30a2\u30ab\u30a6\u30f3\u30c8\u3067\u30b5\u30a4\u30f3\u30a4\u30f3\u3059\u308b<\/li>\n<li><strong>\u300cRequest Access\uff08\u30a2\u30af\u30bb\u30b9\u306e\u8981\u6c42\uff09\u300d<\/strong>\u304b\u3089\u3001\u76e3\u8996\u3057\u305f\u3044IP\u30a2\u30c9\u30ec\u30b9\u30fbIP\u30ec\u30f3\u30b8\u30fbAS\u756a\u53f7\u3092\u5165\u529b\u3057\u3066\u9001\u4fe1\u3059\u308b<\/li>\n<li>\u8868\u793a\u3055\u308c\u308b\u5b9b\u5148\u5019\u88dc\uff08WHOIS\u767b\u9332\u30a2\u30c9\u30ec\u30b9\u306a\u3069\uff09\u304b\u3089\u3001\u78ba\u8a8d\u30e1\u30fc\u30eb\u3092\u53d7\u3051\u53d6\u308b\u30a2\u30c9\u30ec\u30b9\u3092\u9078\u629e\u3059\u308b<\/li>\n<li>\u5c4a\u3044\u305f\u78ba\u8a8d\u30e1\u30fc\u30eb\u5185\u306e\u30ea\u30f3\u30af\u3092\u30af\u30ea\u30c3\u30af\u3057\u3001IP\u306e\u7ba1\u7406\u6a29\u9650\u3092\u8a3c\u660e\u3059\u308b<\/li>\n<li>\u627f\u8a8d\u5f8c\u3001<strong>\u300cView Data\u300d<\/strong>\u304b\u3089\u30c7\u30fc\u30bf\u3092\u95b2\u89a7\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b<\/li>\n<\/ol>\n<p>\u3064\u307e\u308aSNDS\u306f\u300c\u305d\u306eIP\u30a2\u30c9\u30ec\u30b9\u306e\u6b63\u5f53\u306a\u7ba1\u7406\u8005\u3067\u3042\u308b\u3053\u3068\u300d\u3092\u8a3c\u660e\u3067\u304d\u308c\u3070\u3001\u8ab0\u3067\u3082\u7121\u6599\u3067\u4f7f\u3048\u308b\u30c4\u30fc\u30eb\u3067\u3059\u3002\u5171\u6709IP\u3092\u4f7f\u3046\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u5229\u7528\u8005\u306e\u5834\u5408\u306f\u3001\u81ea\u5206\u3067IP\u767b\u9332\u3067\u304d\u306a\u3044\u3053\u3068\u304c\u3042\u308b\u305f\u3081\u3001\u30b5\u30fc\u30d3\u30b9\u63d0\u4f9b\u5143\u304cSNDS\u3092\u76e3\u8996\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3068\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u306a\u304a\u3001SNDS\u306f2026\u5e74\u306b\u30dd\u30fc\u30bf\u30eb\u306e\u5237\u65b0\uff08\u65b0URL\u3078\u306e\u79fb\u884c\uff09\u304c\u5b9f\u65bd\u3055\u308c\u3066\u304a\u308a\u3001\u65e7URL\u3078\u306e\u30ea\u30f3\u30af\u306f\u65b0\u30dd\u30fc\u30bf\u30eb\u306b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u308c\u307e\u3059\u3002\u5237\u65b0\u5f8c\u306f\u3001\u627f\u8a8d\u6e08\u307f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u3082\u5b9a\u671f\u7684\u306a\u518d\u8a8d\u8a3c\uff08\u30a2\u30af\u30bb\u30b9\u6a29\u306e\u66f4\u65b0\uff09\u304c\u6c42\u3081\u3089\u308c\u308b\u4ed5\u69d8\u3068\u306a\u3063\u3066\u3044\u308b\u305f\u3081\u3001\u767b\u9332\u3057\u3066\u7d42\u308f\u308a\u3067\u306f\u306a\u304f\u3001\u7d99\u7d9a\u7684\u306b\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u72b6\u614b\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002<\/p>\n<h3>JMRP\uff08Junk Mail Reporting Program\uff09\u3082\u3042\u308f\u305b\u3066\u8a2d\u5b9a\u3059\u308b<\/h3>\n<p>SNDS\u306b\u306f\u3001JMRP\uff08Junk Mail Reporting Program\uff09\u3068\u3044\u3046\u8ff7\u60d1\u30e1\u30fc\u30eb\u5831\u544a\u306e\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u6a5f\u80fd\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002JMRP\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3001Outlook.com\u306e\u53d7\u4fe1\u8005\u304c\u81ea\u793e\u306e\u30e1\u30fc\u30eb\u3092\u300c\u8ff7\u60d1\u30e1\u30fc\u30eb\u300d\u3068\u3057\u3066\u5831\u544a\u3057\u305f\u969b\u306b\u3001\u305d\u306e\u5831\u544a\u3092\u30ec\u30dd\u30fc\u30c8\u3068\u3057\u3066\u53d7\u3051\u53d6\u308c\u307e\u3059\u3002<\/p>\n<p>\u82e6\u60c5\u3092\u51fa\u3057\u305f\u53d7\u4fe1\u8005\u3092\u901f\u3084\u304b\u306b\u914d\u4fe1\u30ea\u30b9\u30c8\u304b\u3089\u9664\u5916\u3059\u308b\u3053\u3068\u3067\u3001\u82e6\u60c5\u7387\u306e\u4e0a\u6607\u3068\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u60aa\u5316\u3092\u672a\u7136\u306b\u9632\u3052\u307e\u3059\u3002SNDS\u304c\u300c\u5065\u5eb7\u8a3a\u65ad\u300d\u3060\u3068\u3059\u308c\u3070\u3001JMRP\u306f\u300c\u7570\u5e38\u306e\u5373\u6642\u901a\u77e5\u300d\u3067\u3059\u3002\u4e21\u65b9\u3092\u30bb\u30c3\u30c8\u3067\u904b\u7528\u3059\u308b\u3053\u3068\u3067\u3001Outlook\u5b9b\u306e\u914d\u4fe1\u54c1\u8cea\u3092\u7d99\u7d9a\u7684\u306b\u7ba1\u7406\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>SNDS\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u65b9\u3068\u6539\u5584\u30a2\u30af\u30b7\u30e7\u30f3<\/h3>\n<p>SNDS\u3092\u898b\u3066\u554f\u984c\u304c\u898b\u3064\u304b\u3063\u305f\u5834\u5408\u306e\u3001\u4ee3\u8868\u7684\u306a\u5bfe\u5fdc\u3092\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>\u30d5\u30a3\u30eb\u30bf\u30fc\u7d50\u679c\u304c\u9ec4\u30fb\u8d64<\/strong>\uff1a\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u518d\u70b9\u691c\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u898b\u76f4\u3057\u3001\u30ea\u30b9\u30c8\u306e\u30af\u30ea\u30fc\u30cb\u30f3\u30b0\u3092\u4e26\u884c\u3057\u3066\u5b9f\u65bd\u3059\u308b<\/li>\n<li><strong>\u82e6\u60c5\u7387\u304c\u9ad8\u3044<\/strong>\uff1a\u914d\u4fe1\u505c\u6b62\u5c0e\u7dda\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u3059\u308b\u3001\u914d\u4fe1\u983b\u5ea6\u30fb\u5bfe\u8c61\u3092\u898b\u76f4\u3059\u3001JMRP\u3067\u82e6\u60c5\u8005\u3092\u5373\u6642\u9664\u5916\u3059\u308b<\/li>\n<li><strong>\u30c8\u30e9\u30c3\u30d7\u30d2\u30c3\u30c8\u304c\u3042\u308b<\/strong>\uff1a\u9577\u671f\u9593\u53cd\u5fdc\u306e\u306a\u3044\u30a2\u30c9\u30ec\u30b9\u3084\u53d6\u5f97\u7d4c\u8def\u306e\u4e0d\u660e\u306a\u30a2\u30c9\u30ec\u30b9\u3092\u30ea\u30b9\u30c8\u304b\u3089\u9664\u53bb\u3059\u308b\u3002\u30ea\u30b9\u30c8\u8cfc\u5165\u306f\u8ad6\u5916<\/li>\n<li><strong>\u60f3\u5b9a\u5916\u306e\u9001\u4fe1\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u304c\u3042\u308b<\/strong>\uff1a\u30b5\u30fc\u30d0\u30fc\u306e\u4e0d\u6b63\u5229\u7528\uff08\u8e0f\u307f\u53f0\u5316\uff09\u3092\u7591\u3044\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u70b9\u691c\u3059\u308b<\/li>\n<\/ul>\n<\/div>\n<p>SNDS\u306f\u3042\u304f\u307e\u3067\u300c\u73fe\u72b6\u3092\u6620\u3059\u93e1\u300d\u3067\u3042\u308a\u3001\u898b\u308b\u3060\u3051\u3067\u306f\u5230\u9054\u7387\u306f\u6539\u5584\u3057\u307e\u305b\u3093\u3002\u30c7\u30fc\u30bf\u306b\u3082\u3068\u3065\u3044\u3066\u30ea\u30b9\u30c8\u3068\u914d\u4fe1\u904b\u7528\u3092\u6539\u5584\u3057\u7d9a\u3051\u308b\u3053\u3068\u304c\u3001Outlook\u306b\u8a55\u4fa1\u3055\u308c\u308b\u552f\u4e00\u306e\u9053\u3067\u3059\u3002<\/p>\n<h2>\u3010\u9001\u4fe1\u8005\u5411\u3051\u3011Outlook\u5b9b\u306b\u5c4a\u304b\u306a\u3044\u3068\u304d\u306e\u5bfe\u51e6\u624b\u9806<\/h2>\n<p>\u539f\u56e0\u306e\u5168\u4f53\u50cf\u3092\u8e0f\u307e\u3048\u3066\u3001\u5b9f\u969b\u306e\u30c8\u30e9\u30d6\u30eb\u5bfe\u5fdc\u624b\u9806\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30a8\u30e9\u30fc\u30e1\u30fc\u30eb\uff08\u30d0\u30a6\u30f3\u30b9\u30e1\u30fc\u30eb\uff09\u3092\u78ba\u8a8d\u3057\u3066\u539f\u56e0\u3092\u7279\u5b9a\u3059\u308b<\/h3>\n<p>\u6700\u521d\u306b\u3084\u308b\u3079\u304d\u306f\u3001\u30a8\u30e9\u30fc\u30e1\u30fc\u30eb\u306e\u78ba\u8a8d\u3067\u3059\u3002Outlook\uff08Microsoft\uff09\u306f\u30a8\u30e9\u30fc\u306e\u7406\u7531\u3092SMTP\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3067\u8fd4\u3057\u3066\u304a\u308a\u3001\u3053\u308c\u304c\u539f\u56e0\u7279\u5b9a\u306e\u6700\u77ed\u30eb\u30fc\u30c8\u3067\u3059\u3002\u4ee3\u8868\u7684\u306a\u30b3\u30fc\u30c9\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>550 5.7.1\uff08S3150\uff09<\/strong>\uff1a\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u304cMicrosoft\u306e\u30d6\u30ed\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308b<\/li>\n<li><strong>550 5.7.515<\/strong>\uff1a\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u304c\u8981\u6c42\u3055\u308c\u308b\u8a8d\u8a3c\u30ec\u30d9\u30eb\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u3092\u6e80\u305f\u3057\u3066\u3044\u306a\u3044<\/li>\n<li><strong>\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u5bb9\u91cf\u95a2\u9023\u306e\u30a8\u30e9\u30fc<\/strong>\uff1a\u53d7\u4fe1\u8005\u5074\u306e\u5bb9\u91cf\u8d85\u904e\u3002\u9001\u4fe1\u5074\u3067\u5bfe\u51e6\u306f\u4e0d\u8981<\/li>\n<\/ul>\n<\/div>\n<p>\u30a8\u30e9\u30fc\u30e1\u30fc\u30eb\u304c\u8fd4\u3063\u3066\u3053\u306a\u3044\u306e\u306b\u5c4a\u304b\u306a\u3044\u5834\u5408\u306f\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u884c\u304d\u304b\u3001\u30b5\u30fc\u30d0\u30fc\u5074\u3067\u306e\u30b5\u30a4\u30ec\u30f3\u30c8\u306a\u524a\u9664\u304c\u7591\u308f\u308c\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u306fSNDS\u306e\u30c7\u30fc\u30bf\u3068\u30c6\u30b9\u30c8\u9001\u4fe1\u3067\u72b6\u6cc1\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<h3>SPF\u30fbDKIM\u30fbDMARC\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d\u30fb\u4fee\u6b63\u3059\u308b<\/h3>\n<p>\u8a8d\u8a3c\u307e\u308f\u308a\u306f\u6b21\u306e\u624b\u9806\u3067\u70b9\u691c\u3057\u307e\u3059\u3002<\/p>\n<h4><strong>SPF\u306e\u78ba\u8a8d<\/strong><\/h4>\n<p>nslookup\u3084dig\u30b3\u30de\u30f3\u30c9\u3001\u307e\u305f\u306f\u30aa\u30f3\u30e9\u30a4\u30f3\u306e\u78ba\u8a8d\u30c4\u30fc\u30eb\u3067\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3092\u7167\u4f1a\u3057\u3001\u914d\u4fe1\u306b\u4f7f\u3046\u3059\u3079\u3066\u306e\u9001\u4fe1\u5143\uff08\u81ea\u793e\u30b5\u30fc\u30d0\u30fc\u3001\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\uff09\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b\u3002DNS\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u304c10\u56de\u3092\u8d85\u3048\u308b\u3068\u8a8d\u8a3c\u306b\u5931\u6557\u3059\u308b\u305f\u3081\u3001include\u306e\u6570\u306b\u3082\u6ce8\u610f<\/p>\n<h4><strong>DKIM\u306e\u78ba\u8a8d<\/strong><\/h4>\n<p>Outlook\u5b9b\u306b\u30c6\u30b9\u30c8\u9001\u4fe1\u3057\u3001\u53d7\u4fe1\u30e1\u30fc\u30eb\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d8\u30c3\u30c0\u30fc\u3067\u300cdkim=pass\u300d\u3068\u306a\u3063\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b\u3002\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u5229\u7528\u6642\u306f\u3001\u30b5\u30fc\u30d3\u30b9\u6307\u5b9a\u306e\u516c\u958b\u9375\uff08TXT\u30ec\u30b3\u30fc\u30c9\uff09\u304c\u6b63\u3057\u304fDNS\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b<\/p>\n<h4><strong>DMARC\u306e\u78ba\u8a8d<\/strong><\/h4>\n<p>\u300c_dmarc.\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u300d\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3092\u7167\u4f1a\u3057\u3001\u6700\u4f4e\u3067\u3082\u300cv=DMARC1; p=none;\u300d\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b\u3002\u3042\u308f\u305b\u3066\u3001From\u30c9\u30e1\u30a4\u30f3\u3068SPF\/DKIM\u8a8d\u8a3c\u30c9\u30e1\u30a4\u30f3\u306e\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304c\u53d6\u308c\u3066\u3044\u308b\u304b\u3082\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/p>\n<p>\u30c6\u30b9\u30c8\u9001\u4fe1\u3067\u306f\u3001\u53d7\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u306e\u30d8\u30c3\u30c0\u30fc\u306b\u3042\u308b\u300cAuthentication-Results\u300d\u6b04\u3067\u3001spf\u30fbdkim\u30fbdmarc\u306e\u305d\u308c\u305e\u308c\u304cpass\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u3092\u76f4\u63a5\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u30d6\u30ed\u30c3\u30af\u30ea\u30b9\u30c8\u767b\u9332\u3092\u89e3\u9664\u7533\u8acb\u3059\u308b\uff08S3150\u30a8\u30e9\u30fc\u306e\u5834\u5408\uff09<\/h3>\n<p>550 5.7.1\uff08S3150\uff09\u30a8\u30e9\u30fc\u304c\u8fd4\u3063\u3066\u304d\u305f\u5834\u5408\u306f\u3001Microsoft\u3078\u306e\u89e3\u9664\u7533\u8acb\uff08\u7de9\u548c\u7533\u8acb\uff09\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u30a8\u30e9\u30fc\u30e1\u30fc\u30eb\u306b\u8a18\u8f09\u3055\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9\uff08\u30d6\u30ed\u30c3\u30af\u5bfe\u8c61\u306eIP\uff09\u3092\u63a7\u3048\u308b<\/li>\n<li>Microsoft\u306e<\/li>\n<li><strong>Outlook.com\u9001\u4fe1\u8005\u30b5\u30dd\u30fc\u30c8\u306e\u7533\u8acb\u30d5\u30a9\u30fc\u30e0<\/strong>\uff08<a href=\"https:\/\/olcsupport.office.com\/\" target=\"_blank\" rel=\"noopener\">olcsupport.office.com<\/a>\uff09\u3001\u307e\u305f\u306f<strong>\u30b9\u30d1\u30e0\u5bfe\u7b56IP\u9664\u5916\u30dd\u30fc\u30bf\u30eb<\/strong>\uff08<a href=\"https:\/\/sender.office.com\/\" target=\"_blank\" rel=\"noopener\">https:\/\/sender.office.com\/<\/a>\uff09\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b<\/li>\n<li>\u9023\u7d61\u5148\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3001\u5bfe\u8c61IP\u30a2\u30c9\u30ec\u30b9\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u5185\u5bb9\u3092\u5165\u529b\u3057\u3066\u9001\u4fe1\u3059\u308b<\/li>\n<li>\u53d7\u7406\u3055\u308c\u308b\u3068\u53d7\u4ed8\u30e1\u30fc\u30eb\u304c\u5c4a\u304d\u3001\u305d\u306e\u5f8c<strong>\u300c\u89e3\u9664\uff08\u7de9\u548c\uff09\u5b8c\u4e86\u300d<\/strong>\u306e\u9023\u7d61\u304c\u5c4a\u304f\u3002\u53cd\u6620\u307e\u306724\u301c48\u6642\u9593\u7a0b\u5ea6\u304b\u304b\u308b<\/li>\n<\/ol>\n<p>\u306a\u304a\u3001\u7533\u8acb\u3057\u3066\u3082\u300c\u7de9\u548c\u51e6\u7f6e\u306e\u5bfe\u8c61\u5916\u300d\u3068\u8fd4\u7b54\u3055\u308c\u308b\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u3082\u8ae6\u3081\u305a\u3001\u8fd4\u4fe1\u30e1\u30fc\u30eb\u306b\u5bfe\u3057\u3066\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u5168\u6587\u3068\u7de9\u548c\u306e\u5e0c\u671b\u3092\u6dfb\u3048\u3066\u518d\u5ea6\u4f9d\u983c\u3059\u308b\u3068\u3001\u7de9\u548c\u304c\u5b9f\u65bd\u3055\u308c\u305f\u3068\u3044\u3046\u4e8b\u4f8b\u304c\u8907\u6570\u5831\u544a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u91cd\u8981\u306a\u306e\u306f\u3001<strong>\u89e3\u9664\u7533\u8acb\u306f\u5bfe\u75c7\u7642\u6cd5\u306b\u3059\u304e\u306a\u3044<\/strong>\u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u30d6\u30ed\u30c3\u30af\u3055\u308c\u305f\u6839\u672c\u539f\u56e0\uff08\u8a8d\u8a3c\u4e0d\u5099\u3001\u30ea\u30b9\u30c8\u54c1\u8cea\u3001\u5171\u6709IP\u306e\u554f\u984c\u306a\u3069\uff09\u3092\u89e3\u6d88\u3057\u306a\u3044\u9650\u308a\u3001\u518d\u3073\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3053\u3068\u3092\u5fd8\u308c\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u306e\u78ba\u8a8d\u624b\u9806\u3068\u89e3\u9664\u65b9\u6cd5\u306e\u8a73\u7d30\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n  <div class=\"blogcard\">\n  <a href=\"\/blog\/spam\/blacklist\">\n   <div class=\"blogcard_thumbnail\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2019\/03\/img01.jpg\" alt=\"\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u306e\u306f\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u304c\u539f\u56e0\uff1f3\u3064\u306e\u78ba\u8a8d\u624b\u9806\u3068Spamhaus\u89e3\u9664\u65b9\u6cd5\" width=\"90\" height=\"60\" \/><\/div>\n   <div class=\"blogcard_content\">\n    <div class=\"blogcard_title\">\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u306e\u306f\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u304c\u539f\u56e0\uff1f3\u3064\u306e\u78ba\u8a8d\u624b\u9806\u3068Spamhaus\u89e3\u9664\u65b9\u6cd5<\/div>\n    <div class=\"blogcard_excerpt\">\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u767b\u9332\u3055\u308c\u3066\u3057\u307e\u3046\u3068\u3001\u9001\u4fe1\u30e1\u30fc\u30eb\u306f\u307b\u3068\u3093\u3069\u306e\u5b9b\u5148\u306b\u5c4a\u304b\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002 \u305d\u306e\u56de\u907f\u65b9\u6cd5\u3092\u3054\u6848\u5185\u3057\u307e\u3059\u3002<\/div>\n   <\/div>\n   <div class=\"clear\"><\/div>\n  <\/a>\n  <\/div>\n<h3>\u30ea\u30b9\u30c8\u3092\u30af\u30ea\u30fc\u30cb\u30f3\u30b0\u3057\u3001\u914d\u4fe1\u54c1\u8cea\u3092\u7d99\u7d9a\u7684\u306b\u7ba1\u7406\u3059\u308b<\/h3>\n<p>\u518d\u767a\u9632\u6b62\u3068\u5230\u9054\u7387\u306e\u5e95\u4e0a\u3052\u306b\u306f\u3001\u6b21\u306e\u904b\u7528\u3092\u30eb\u30fc\u30c1\u30f3\u5316\u3057\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>\u914d\u4fe1\u30a8\u30e9\u30fc\uff08\u30d0\u30a6\u30f3\u30b9\uff09\u3068\u306a\u3063\u305f\u30a2\u30c9\u30ec\u30b9\u3092\u81ea\u52d5\u7684\u306b\u914d\u4fe1\u5bfe\u8c61\u304b\u3089\u9664\u5916\u3059\u308b<\/li>\n<li>\u9577\u671f\u9593\u958b\u5c01\u30fb\u30af\u30ea\u30c3\u30af\u306e\u306a\u3044\u30a2\u30c9\u30ec\u30b9\u3078\u306e\u914d\u4fe1\u3092\u898b\u76f4\u3059\uff08\u5b9a\u671f\u7684\u306a\u30ea\u30b9\u30c8\u7cbe\u67fb\uff09<\/li>\n<li>\u914d\u4fe1\u505c\u6b62\u30ea\u30f3\u30af\u3092\u672c\u6587\u306e\u308f\u304b\u308a\u3084\u3059\u3044\u4f4d\u7f6e\u306b\u8a2d\u7f6e\u3057\u3001\u78ba\u5b9f\u306b\u6a5f\u80fd\u3055\u305b\u308b<\/li>\n<li>SNDS\u30fbJMRP\u3092\u5b9a\u671f\u7684\u306b\u78ba\u8a8d\u3057\u3001\u82e6\u60c5\u7387\u3068\u30c8\u30e9\u30c3\u30d7\u30d2\u30c3\u30c8\u3092\u76e3\u8996\u3059\u308b<\/li>\n<li>\u65b0\u898fIP\u3084\u914d\u4fe1\u91cf\u3092\u5897\u3084\u3059\u969b\u306f\u3001\u5c11\u91cf\u304b\u3089\u6bb5\u968e\u7684\u306b\u5897\u3084\u3059\u30a6\u30a9\u30fc\u30e0\u30a2\u30c3\u30d7\u3092\u884c\u3046<\/li>\n<\/ul>\n<\/div>\n<p>\u4e00\u6589\u9001\u4fe1\u306e\u5230\u9054\u7387\u306f\u3001\u4e00\u5ea6\u6574\u3048\u305f\u3089\u7d42\u308f\u308a\u3067\u306f\u306a\u304f\u3001\u65e5\u3005\u306e\u904b\u7528\u54c1\u8cea\u306e\u7a4d\u307f\u91cd\u306d\u3067\u6c7a\u307e\u308a\u307e\u3059\u3002\u81ea\u793e\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3060\u3051\u3067\u3053\u308c\u3089\u3059\u3079\u3066\u3092\u7ba1\u7406\u3059\u308b\u306e\u306f\u8ca0\u8377\u304c\u5927\u304d\u3044\u305f\u3081\u3001\u6b21\u306b\u7d39\u4ecb\u3059\u308b\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306e\u6d3b\u7528\u304c\u73fe\u5b9f\u7684\u306a\u89e3\u6c7a\u7b56\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>Outlook\u5b9b\u306e\u30e1\u30fc\u30eb\u3092\u78ba\u5b9f\u306b\u5c4a\u3051\u308b\u306a\u3089\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u6d3b\u7528\u3059\u308b<\/h2>\n<p>\u3053\u3053\u307e\u3067\u898b\u3066\u304d\u305f\u3088\u3046\u306b\u3001Outlook\u5b9b\u306e\u4e00\u6589\u9001\u4fe1\u306b\u306f\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u30fbIP\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u7ba1\u7406\u30fb\u30ea\u30b9\u30c8\u7ba1\u7406\u30fb\u30a8\u30e9\u30fc\u51e6\u7406\u3068\u3044\u3063\u305f\u591a\u5c64\u7684\u306a\u5bfe\u7b56\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u3092\u81ea\u793e\u69cb\u7bc9\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3067\u904b\u7528\u3057\u7d9a\u3051\u308b\u306e\u306f\u3001\u5c02\u4efb\u306e\u6280\u8853\u8005\u304c\u3044\u3066\u3082\u5bb9\u6613\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u6709\u52b9\u306a\u306e\u304c\u3001\u5230\u9054\u7387\u306e\u7ba1\u7406\u3092\u5c02\u9580\u3068\u3059\u308b\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306e\u6d3b\u7528\u3067\u3059\u3002<\/p>\n<h3>\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u4f7f\u3046\u30e1\u30ea\u30c3\u30c8<\/h3>\n<p>\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306f\u3001Outlook\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u4e3b\u8981\u30e1\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u3078\u300c\u5c4a\u3051\u308b\u3053\u3068\u300d\u306b\u7279\u5316\u3057\u305f\u914d\u4fe1\u57fa\u76e4\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u4e00\u6589\u9001\u4fe1\u8005\u306b\u3068\u3063\u3066\u306e\u30e1\u30ea\u30c3\u30c8\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>\u9001\u4fe1\u8005\u8981\u4ef6\u3078\u306e\u5bfe\u5fdc\u304c\u5bb9\u6613<\/strong>\uff1aSPF\u30fbDKIM\u306a\u3069\u306e\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306b\u5bfe\u5fdc\u3057\u305f\u914d\u4fe1\u74b0\u5883\u3092\u3001\u5c02\u9580\u77e5\u8b58\u304c\u5c11\u306a\u304f\u3066\u3082\u6574\u3048\u3089\u308c\u308b<\/li>\n<li><strong>\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u7ba1\u7406\u3055\u308c\u305f\u914d\u4fe1\u57fa\u76e4<\/strong>\uff1a\u914d\u4fe1\u4e8b\u696d\u8005\u304c\u5230\u9054\u7387\u3092\u7dad\u6301\u30fb\u76e3\u8996\u3057\u3066\u3044\u308bIP\u30a2\u30c9\u30ec\u30b9\u7fa4\u304b\u3089\u914d\u4fe1\u3067\u304d\u308b\u305f\u3081\u3001\u81ea\u793e\u30b5\u30fc\u30d0\u30fc\u306e\u8a55\u4fa1\u60aa\u5316\u3084\u30d6\u30ed\u30c3\u30af\u306e\u5dfb\u304d\u6dfb\u3048\u30ea\u30b9\u30af\u3092\u907f\u3051\u3089\u308c\u308b<\/li>\n<li><strong>\u30a8\u30e9\u30fc\u30a2\u30c9\u30ec\u30b9\u306e\u81ea\u52d5\u7ba1\u7406<\/strong>\uff1a\u30d0\u30a6\u30f3\u30b9\u3057\u305f\u30a2\u30c9\u30ec\u30b9\u3092\u81ea\u52d5\u3067\u691c\u77e5\u30fb\u9664\u5916\u3067\u304d\u3001\u30ea\u30b9\u30c8\u54c1\u8cea\u3092\u7dad\u6301\u3057\u3084\u3059\u3044<\/li>\n<\/ul>\n<\/div>\n<p>\u300c\u30e1\u30fc\u30eb\u3092\u4f5c\u3063\u3066\u9001\u308b\u300d\u3060\u3051\u3067\u306a\u304f\u300c\u5c4a\u304d\u7d9a\u3051\u308b\u72b6\u614b\u3092\u7dad\u6301\u3059\u308b\u300d\u305f\u3081\u306e\u4ed5\u7d44\u307f\u304c\u63c3\u3063\u3066\u3044\u308b\u70b9\u304c\u3001\u901a\u5e38\u306e\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\u304b\u3089\u306e\u4e00\u6589\u9001\u4fe1\u3068\u306e\u6c7a\u5b9a\u7684\u306a\u9055\u3044\u3067\u3059\u3002<\/p>\n<h3>\u304a\u3059\u3059\u3081\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u300c\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u300d<\/h3>\n<p><a href=\"https:\/\/blastmail.jp\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2024\/07\/blastmail-top.jpg\" alt=\"\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u306e\u30ad\u30e3\u30c3\u30c1\u753b\u50cf\" width=\"1200\" height=\"630\" class=\"alignnone wp-image-15955 size-full\" \/><\/a><\/p>\n<p>\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\uff08blastmail\uff09\u306f\u300115\u5e74\u9023\u7d9a\u3067\u5c0e\u5165\u793e\u6570\u30b7\u30a7\u30a2No.1\u3092\u7372\u5f97\u3057\u3066\u3044\u308b\u56fd\u5185\u6700\u5927\u7d1a\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3067\u3059\u300227,000\u793e\u4ee5\u4e0a\u306e\u5c0e\u5165\u5b9f\u7e3e\u306b\u88cf\u6253\u3061\u3055\u308c\u305f\u914d\u4fe1\u57fa\u76e4\u3068\u3001\u5c02\u9580\u77e5\u8b58\u304c\u306a\u304f\u3066\u3082\u76f4\u611f\u7684\u306b\u4f7f\u3048\u308b\u30b7\u30f3\u30d7\u30eb\u306a\u64cd\u4f5c\u6027\u3067\u3001Outlook\u5b9b\u3092\u542b\u3080\u4e00\u6589\u9001\u4fe1\u306e\u5230\u9054\u7387\u6539\u5584\u306b\u8ca2\u732e\u3057\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u5bfe\u7b56\uff08SPF\/DKIM\uff09<\/strong>\uff1aOutlook\u306e\u9001\u4fe1\u8005\u8981\u4ef6\u3067\u3082\u5fc5\u9808\u3068\u306a\u3063\u305f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306b\u5bfe\u5fdc\u3057\u3001\u306a\u308a\u3059\u307e\u3057\u30fb\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u3092\u56de\u907f<\/li>\n<li><strong>\u52b9\u679c\u6e2c\u5b9a\u6a5f\u80fd<\/strong>\uff1a\u958b\u5c01\u7387\u30fb\u30af\u30ea\u30c3\u30af\u7387\u30fb\u30a8\u30e9\u30fc\u30ab\u30a6\u30f3\u30c8\u3092\u78ba\u8a8d\u3067\u304d\u3001\u30ea\u30b9\u30c8\u54c1\u8cea\u306e\u7ba1\u7406\u3068\u6539\u5584\u306b\u6d3b\u304b\u305b\u308b<\/li>\n<li><strong>\u30d5\u30a3\u30eb\u30bf\u914d\u4fe1\uff08\u30bb\u30b0\u30e1\u30f3\u30c8\u914d\u4fe1\uff09<\/strong>\uff1a\u8aad\u8005\u306e\u5c5e\u6027\u306b\u5408\u308f\u305b\u305f\u914d\u4fe1\u3067\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u5831\u544a\u306b\u3064\u306a\u304c\u308b\u300c\u671b\u307e\u308c\u306a\u3044\u914d\u4fe1\u300d\u3092\u6e1b\u3089\u305b\u308b<\/li>\n<li><strong>\u696d\u754c\u6700\u5b89\u30af\u30e9\u30b9\u306e\u6599\u91d1<\/strong>\uff1a\u6708\u984d4,000\u5186\u304b\u3089\u5229\u7528\u3067\u304d\u3001\u914d\u4fe1\u901a\u6570\u306f\u7121\u5236\u9650<\/li>\n<\/ul>\n<\/div>\n<p>\u300cOutlook\u5b9b\u306e\u5230\u9054\u7387\u306b\u4e0d\u5b89\u304c\u3042\u308b\u300d\u300c\u9001\u4fe1\u8005\u8981\u4ef6\u3078\u306e\u5bfe\u5fdc\u3092\u3053\u308c\u304b\u3089\u9032\u3081\u305f\u3044\u300d\u3068\u3044\u3046\u62c5\u5f53\u8005\u306e\u6700\u521d\u306e\u4e00\u6b69\u3068\u3057\u3066\u6700\u9069\u3067\u3059\u3002<\/p>\n<div class=\"su-button-center\"><a href=\"https:\/\/blastmail.jp\/\" class=\"su-button su-button-style-flat event_bnr\" style=\"color:#FFFFFF;background-color:#c12620;border-color:#9b1f1a;border-radius:5px\" target=\"_self\"><span style=\"color:#FFFFFF;padding:0px 34px;font-size:25px;line-height:50px;border-color:#d46863;border-radius:5px;text-shadow:none\"> \u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u3092\u7121\u6599\u3067\u8a66\u3059 &gt;<\/span><\/a><\/div>\n<p>\u516c\u5f0f\u30b5\u30a4\u30c8\uff1a<a href=\"https:\/\/blastmail.jp\/\">\u30b7\u30a7\u30a21\u4f4d\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u300c\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u300d<\/a><\/p>\n<h3>\u304a\u3059\u3059\u3081\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u300cblastengine\u300d<\/h3>\n<p><a href=\"https:\/\/blastengine.jp\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2025\/10\/blastengine.jpg\" alt=\"blastengine\u306e\u30a2\u30a4\u30ad\u30e3\u30c3\u30c1\u753b\u50cf\" width=\"1303\" height=\"590\" class=\"alignnone wp-image-19575 size-full\" \/><\/a><\/p>\n<p>blastengine\uff08\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\uff09\u306f\u3001\u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\u3068SMTP\u30ea\u30ec\u30fc\u3084API\u3067\u9023\u643a\u3057\u3066\u3001\u4e00\u6589\u914d\u4fe1\u3084\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u306e\u901a\u77e5\u30e1\u30fc\u30eb\u3092\u9ad8\u901f\u30fb\u78ba\u5b9f\u306b\u5c4a\u3051\u308b\u30a8\u30f3\u30b8\u30cb\u30a2\u5411\u3051\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u306e\u904b\u7528\u30fb\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306fblastengine\u5074\u3067\u884c\u3046\u305f\u3081\u3001\u9762\u5012\u306aIP\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u7ba1\u7406\u304b\u3089\u89e3\u653e\u3055\u308c\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>99%\u4ee5\u4e0a\u306e\u9ad8\u3044\u30e1\u30fc\u30eb\u5230\u9054\u7387<\/strong>\uff1a\u56fd\u5185\u30ad\u30e3\u30ea\u30a2\u30fbISP\u3078\u306e\u500b\u5225\u9001\u4fe1\u30ed\u30b8\u30c3\u30af\u3067\u3001Outlook\u5b9b\u3092\u542b\u3081\u78ba\u5b9f\u306b\u5c4a\u3051\u308b<\/li>\n<li><strong>SPF\/DKIM\/DMARC\u5bfe\u5fdc<\/strong>\uff1aOutlook\u306e\u9001\u4fe1\u8005\u8981\u4ef6\u3067\u5fc5\u9808\u3068\u306a\u3063\u305f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306b\u6a19\u6e96\u5bfe\u5fdc<\/li>\n<li><strong>IP\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u7ba1\u7406<\/strong>\uff1ablastengine\u5074\u3067\u9001\u4fe1\u74b0\u5883\u3092\u904b\u7528\u30fb\u7ba1\u7406\u3059\u308b\u305f\u3081\u3001\u5e38\u306b\u9ad8\u3044\u9001\u4fe1\u8005\u8a55\u4fa1\u3092\u7dad\u6301\u3067\u304d\u308b<\/li>\n<li><strong>\u30d0\u30a6\u30f3\u30b9\u30e1\u30fc\u30eb\u81ea\u52d5\u5bfe\u5fdc<\/strong>\uff1a\u30a8\u30e9\u30fc\u30e1\u30fc\u30eb\u306e\u7ba1\u7406\u3092\u81ea\u52d5\u5316\u3057\u3001\u30ea\u30b9\u30c8\u54c1\u8cea\u306e\u7dad\u6301\u3068\u904b\u7528\u8ca0\u8377\u306e\u524a\u6e1b\u3092\u4e21\u7acb<\/li>\n<li><strong>API\u9023\u643a\u30fbSMTP\u30ea\u30ec\u30fc<\/strong>\uff1a\u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\u3078\u306e\u7d44\u307f\u8fbc\u307f\u304c\u5bb9\u6613\u3067\u3001\u6700\u77ed\u5373\u65e5\u304b\u3089\u5229\u7528\u958b\u59cb\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/div>\n<p>\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u306e\u81ea\u52d5\u9001\u4fe1\u30e1\u30fc\u30eb\u3084\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30e1\u30fc\u30eb\u304cOutlook\u306b\u5c4a\u304b\u306a\u3044\u3068\u3044\u3046\u8ab2\u984c\u3092\u62b1\u3048\u308b\u958b\u767a\u8005\u30fb\u30b7\u30b9\u30c6\u30e0\u62c5\u5f53\u8005\u306b\u304a\u3059\u3059\u3081\u3067\u3059\u3002\u521d\u671f\u8cbb\u7528\u306f\u7121\u6599\u3001\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u5165\u529b\u3060\u3051\u3067\u7121\u6599\u30c8\u30e9\u30a4\u30a2\u30eb\u3092\u958b\u59cb\u3067\u304d\u307e\u3059\u3002<\/p>\n<div class=\"su-button-center\"><a href=\"https:\/\/blastengine.jp\/\" class=\"su-button su-button-style-flat event_bnr\" style=\"color:#FFFFFF;background-color:#c12620;border-color:#9b1f1a;border-radius:5px\" target=\"_self\"><span style=\"color:#FFFFFF;padding:0px 34px;font-size:25px;line-height:50px;border-color:#d46863;border-radius:5px;text-shadow:none\"> blastengine\u3092\u7121\u6599\u3067\u8a66\u3059 &gt;<\/span><\/a><\/div>\n<p>\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u516c\u5f0f\u30b5\u30a4\u30c8\uff1a<a href=\"https:\/\/blastengine.jp\/\">https:\/\/blastengine.jp\/<\/a><\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>Outlook\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u554f\u984c\u306f\u3001\u53d7\u4fe1\u8005\u5074\u3067\u306f\u300c\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u30fb\u305d\u306e\u4ed6\u30bf\u30d6\u30fb\u4ed5\u5206\u3051\u30eb\u30fc\u30eb\u30fb\u5bb9\u91cf\u300d\u306e\u78ba\u8a8d\u3001\u9001\u4fe1\u8005\u5074\u3067\u306f\u300c\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u30fb\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u30fb\u30ea\u30b9\u30c8\u54c1\u8cea\u300d\u3092\u8ef8\u3068\u3057\u305f\u69cb\u9020\u7684\u306a\u539f\u56e0\u7279\u5b9a\u304c\u89e3\u6c7a\u306e\u8fd1\u9053\u3067\u3059\u3002<\/p>\n<p>\u7279\u306b\u4e00\u6589\u9001\u4fe1\u8005\u306f\u30012025\u5e745\u6708\u65bd\u884c\u306eOutlook\u9001\u4fe1\u8005\u8981\u4ef6\uff08SPF\u30fbDKIM\u30fbDMARC\u5fc5\u9808\u5316\uff09\u3078\u306e\u5bfe\u5fdc\u304c\u6700\u512a\u5148\u4e8b\u9805\u3067\u3059\u3002\u672a\u5bfe\u5fdc\u3067\u3042\u308c\u3070\u3001\u307e\u305a\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306e\u8a8d\u8a3c\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3042\u308f\u305b\u3066SNDS\u306b\u9001\u4fe1\u5143IP\u3092\u767b\u9332\u3057\u3001Microsoft\u304b\u3089\u306e\u8a55\u4fa1\u3092\u53ef\u8996\u5316\u3059\u308b\u4f53\u5236\u3092\u6574\u3048\u307e\u3057\u3087\u3046\u3002<\/p>\n<div class=\"blog-faq\"><h2 class=\"blog-faq__title\">FAQ<\/h2><dl class=\"blog-faq__list\">\n<dt class=\"blog-faq__question\">Outlook\u3067\u7279\u5b9a\u306e\u76f8\u624b\u304b\u3089\u306e\u30e1\u30fc\u30eb\u3060\u3051\u5c4a\u304d\u307e\u305b\u3093\u3002\u307e\u305a\u4f55\u3092\u78ba\u8a8d\u3059\u3079\u304d\u3067\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u307e\u305a\u300c\u8ff7\u60d1\u30e1\u30fc\u30eb\u300d\u30d5\u30a9\u30eb\u30c0\u3068\u3001\u512a\u5148\u53d7\u4fe1\u30c8\u30ec\u30a4\u306e\u300c\u305d\u306e\u4ed6\u300d\u30bf\u30d6\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6b21\u306b\u53d7\u4fe1\u62d2\u5426\u30ea\u30b9\u30c8\u3068\u4ed5\u5206\u3051\u30eb\u30fc\u30eb\u3092\u898b\u76f4\u3057\u3001\u305d\u308c\u3067\u3082\u898b\u3064\u304b\u3089\u306a\u3051\u308c\u3070\u9001\u4fe1\u8005\u306b\u30a8\u30e9\u30fc\u30e1\u30fc\u30eb\u304c\u8fd4\u3063\u3066\u3044\u306a\u3044\u304b\u78ba\u8a8d\u3092\u4f9d\u983c\u3057\u307e\u3057\u3087\u3046\u3002<\/dd>\n<dt class=\"blog-faq__question\">Outlook\u5b9b\u306e\u4e00\u6589\u9001\u4fe1\u3067\u300c550 5.7.1\uff08S3150\uff09\u300d\u30a8\u30e9\u30fc\u304c\u8fd4\u3063\u3066\u304d\u307e\u3059\u3002\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u304cMicrosoft\u306e\u30d6\u30ed\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u72b6\u614b\u3067\u3059\u3002Microsoft\u306e\u89e3\u9664\u7533\u8acb\u30d5\u30a9\u30fc\u30e0\u304b\u3089IP\u30a2\u30c9\u30ec\u30b9\u3068\u30a8\u30e9\u30fc\u5185\u5bb9\u3092\u6dfb\u3048\u3066\u7de9\u548c\u7533\u8acb\u3092\u884c\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u53cd\u6620\u306b\u306f24\u301c48\u6642\u9593\u7a0b\u5ea6\u304b\u304b\u308a\u307e\u3059\u3002\u3042\u308f\u305b\u3066\u3001\u30d6\u30ed\u30c3\u30af\u3055\u308c\u305f\u6839\u672c\u539f\u56e0\uff08\u8a8d\u8a3c\u4e0d\u5099\u3084\u30ea\u30b9\u30c8\u54c1\u8cea\uff09\u306e\u6539\u5584\u3082\u5fc5\u8981\u3067\u3059\u3002<\/dd>\n<dt class=\"blog-faq__question\">2025\u5e745\u6708\u304b\u3089\u306eOutlook\u9001\u4fe1\u8005\u8981\u4ef6\u306b\u306f\u30011\u65e55,000\u901a\u672a\u6e80\u306e\u9001\u4fe1\u8005\u3082\u5bfe\u5fdc\u304c\u5fc5\u8981\u3067\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u5fc5\u9808\u8981\u4ef6\u306e\u5bfe\u8c61\u306f1\u65e55,000\u901a\u4ee5\u4e0a\u3092\u9001\u4fe1\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u3067\u3059\u304c\u3001Microsoft\u306f\u3059\u3079\u3066\u306e\u9001\u4fe1\u8005\u306bSPF\u30fbDKIM\u30fbDMARC\u306e\u5c0e\u5165\u3092\u63a8\u5968\u3057\u3066\u3044\u307e\u3059\u3002\u5230\u9054\u7387\u306e\u7dad\u6301\u3068\u30d6\u30e9\u30f3\u30c9\u4fdd\u8b77\u306e\u89b3\u70b9\u304b\u3089\u3001\u914d\u4fe1\u898f\u6a21\u306b\u304b\u304b\u308f\u3089\u305a\u5bfe\u5fdc\u3057\u3066\u304a\u304f\u3053\u3068\u3092\u5f37\u304f\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002<\/dd>\n<dt 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