{"id":22726,"date":"2026-09-15T18:38:31","date_gmt":"2026-09-15T09:38:31","guid":{"rendered":"https:\/\/blastmail.jp\/blog\/?p=22726"},"modified":"2026-09-16T17:48:37","modified_gmt":"2026-09-16T08:48:37","slug":"microsoft365-smtpserver","status":"publish","type":"post","link":"https:\/\/blastmail.jp\/blog\/mail-delivery\/microsoft365-smtpserver","title":{"rendered":"Microsoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u8a2d\u5b9a\u3068\u6d3b\u7528\u6cd5\uff5c4\u3064\u306e\u9001\u4fe1\u65b9\u5f0f\u30fb\u9001\u4fe1\u5236\u9650\u30fb2026\u5e74\u554f\u984c\u307e\u3067\u89e3\u8aac"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2026\/09\/microsoft365-smtpserver.png\" alt=\"\" width=\"1734\" height=\"907\" class=\"alignnone size-full wp-image-22727\" \/><\/p>\n<p>\u8907\u5408\u6a5f\u306e\u30b9\u30ad\u30e3\u30f3to\u30e1\u30fc\u30eb\u3001\u57fa\u5e79\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u306e\u81ea\u52d5\u901a\u77e5\u3001WordPress\u306e\u554f\u3044\u5408\u308f\u305b\u30d5\u30a9\u30fc\u30e0\u3002\u3053\u308c\u3089\u306e\u9001\u4fe1\u5143\u3068\u3057\u3066\u300cMicrosoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\uff08smtp.office365.com\uff09\u300d\u3092\u6307\u5b9a\u3057\u3066\u3044\u308b\u4f01\u696d\u306f\u975e\u5e38\u306b\u591a\u304f\u5b58\u5728\u3057\u307e\u3059\u3002\u8a2d\u5b9a\u81ea\u4f53\u306f\u30b5\u30fc\u30d0\u30fc\u540d\u30fb\u30dd\u30fc\u30c8\u756a\u53f7\u30fbID\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5165\u308c\u308b\u3060\u3051\u3002\u624b\u8efd\u3067\u3001\u8ffd\u52a0\u30b3\u30b9\u30c8\u3082\u304b\u304b\u3089\u306a\u3044\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u305d\u306e\u624b\u8efd\u3055\u306e\u524d\u63d0\u304c2026\u5e74\u306b\u5927\u304d\u304f\u5909\u308f\u308a\u307e\u3059\u3002Microsoft\u306f\u3001SMTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u9001\u4fe1\u306b\u304a\u3051\u308b\u57fa\u672c\u8a8d\u8a3c\uff08\u30e6\u30fc\u30b6\u30fc\u540d\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u306b\u3088\u308b\u8a8d\u8a3c\uff09\u3092<strong>2026\u5e7412\u6708\u672b\u306b\u65e2\u5b9a\u3067\u30aa\u30d5<\/strong>\u306b\u3059\u308b\u3068\u767a\u8868\u3057\u307e\u3057\u305f\u3002\u4f55\u3082\u5bfe\u5fdc\u3057\u306a\u3044\u307e\u307e\u3053\u306e\u65e5\u3092\u8fce\u3048\u308b\u3068\u3001\u3053\u308c\u307e\u3067\u5f53\u305f\u308a\u524d\u306b\u9001\u308c\u3066\u3044\u305f\u901a\u77e5\u30e1\u30fc\u30eb\u3084\u30b9\u30ad\u30e3\u30f3\u30e1\u30fc\u30eb\u304c\u3001\u3042\u308b\u671d\u7a81\u7136\u30a8\u30e9\u30fc\u3067\u6b62\u307e\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001<strong>Microsoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u8a2d\u5b9a\u5024\u3068\u6709\u52b9\u5316\u306e\u624b\u9806<\/strong>\u3092\u62bc\u3055\u3048\u305f\u3046\u3048\u3067\u3001Microsoft\u304c\u516c\u5f0f\u306b\u6848\u5185\u3057\u3066\u3044\u308b<strong>4\u3064\u306e\u9001\u4fe1\u65b9\u5f0f\uff08\u30af\u30e9\u30a4\u30a2\u30f3\u30c8SMTP\u9001\u4fe1\uff0fSMTP\u30ea\u30ec\u30fc\uff0f\u76f4\u63a5\u9001\u4fe1\uff0fHigh Volume Email\uff09\u306e\u4f7f\u3044\u5206\u3051<\/strong>\u3001\u898b\u843d\u3068\u3057\u3084\u3059\u3044<strong>\u9001\u4fe1\u5236\u9650\u306e\u5177\u4f53\u7684\u306a\u6570\u5024<\/strong>\u3001\u305d\u3057\u3066<strong>\u57fa\u672c\u8a8d\u8a3c\u306e\u65e2\u5b9a\u30aa\u30d5\u306b\u5411\u3051\u305f\u79fb\u884c\u5148\u306e\u9078\u3073\u65b9<\/strong>\u307e\u3067\u3092\u4e00\u6c17\u306b\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n<p>\u300c\u3068\u308a\u3042\u3048\u305a\u8a2d\u5b9a\u306f\u3067\u304d\u305f\u304c\u3001\u3053\u308c\u3067\u672c\u5f53\u306b\u904b\u7528\u306b\u8010\u3048\u308b\u306e\u304b\u4e0d\u5b89\u300d\u300c\u30e1\u30eb\u30de\u30ac\u3084\u5927\u91cf\u306e\u901a\u77e5\u30e1\u30fc\u30eb\u3092Microsoft 365\u304b\u3089\u9001\u3063\u3066\u3088\u3044\u306e\u304b\u5224\u65ad\u304c\u3064\u304b\u306a\u3044\u300d\u3068\u3044\u3046\u62c5\u5f53\u8005\u304c\u3001\u81ea\u793e\u306e\u69cb\u6210\u3092\u70b9\u691c\u3057\u3001\u6b21\u306e\u4e00\u624b\u3092\u6c7a\u3081\u3089\u308c\u308b\u72b6\u614b\u306b\u306a\u308b\u3053\u3068\u3092\u30b4\u30fc\u30eb\u3068\u3057\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2025\/03\/26439_728_90.png\" alt=\"blastengine\u306e\u30ad\u30e3\u30c3\u30c1\u753b\u50cf\" width=\"728\" height=\"90\" class=\"alignnone size-full wp-image-18153\" \/><\/p>\n<h2>Microsoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u3068\u306f\uff1f\u8a2d\u5b9a\u5024\u306e\u57fa\u672c\u3092\u62bc\u3055\u3048\u308b<\/h2>\n<p>Microsoft 365\uff08\u65e7\uff1aOffice 365\uff09\u306f\u3001Exchange Online\u3068\u3044\u3046\u30e1\u30fc\u30eb\u57fa\u76e4\u3092\u5185\u5305\u3057\u305f\u30af\u30e9\u30a6\u30c9\u578b\u306e\u7d71\u5408\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002\u3053\u306eExchange Online\u304c\u63d0\u4f9b\u3059\u308b\u9001\u4fe1\u7528\u30b5\u30fc\u30d0\u30fc\u304c\u3001\u3044\u308f\u3086\u308b\u300cMicrosoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u300d\u306b\u3042\u305f\u308a\u307e\u3059\u3002<\/p>\n<p>SMTP\uff08Simple Mail Transfer Protocol\uff09\u306f\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u30fb\u8ee2\u9001\u3059\u308b\u305f\u3081\u306e\u901a\u4fe1\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\u3084\u8907\u5408\u6a5f\u3001\u696d\u52d9\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u30e1\u30fc\u30eb\u672c\u6587\u3092\u4f5c\u308b\u3053\u3068\u306f\u3067\u304d\u3066\u3082\u3001\u305d\u308c\u3092\u81ea\u529b\u3067\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3078\u9001\u308a\u51fa\u3059\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u3001SMTP\u30b5\u30fc\u30d0\u30fc\u306b\u300c\u3053\u306e\u30e1\u30fc\u30eb\u3092\u9001\u3063\u3066\u307b\u3057\u3044\u300d\u3068\u4f9d\u983c\u3059\u308b\u3002\u3053\u306e\u4f9d\u983c\u306e\u5b9b\u5148\u3068\u3057\u3066\u6307\u5b9a\u3059\u308b\u306e\u304c\u3001Microsoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u3002<\/p>\n<h3>Microsoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u8a2d\u5b9a\u5024\u4e00\u89a7<\/h3>\n<p>\u307e\u305a\u3001\u5b9f\u52d9\u3067\u5fc5\u8981\u306b\u306a\u308b\u8a2d\u5b9a\u5024\u3092\u78ba\u5b9a\u3055\u305b\u3066\u304a\u304d\u307e\u3059\u3002Microsoft\u304c\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3067\u6848\u5185\u3057\u3066\u3044\u308b\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8SMTP\u9001\u4fe1\u306e\u8a2d\u5b9a\u5024\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<div class=\"su-table su-table-alternate\">\n<table>\n<thead>\n<tr>\n<th>\u8a2d\u5b9a\u9805\u76ee<\/th>\n<th>\u5024<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u30b5\u30fc\u30d0\u30fc\u540d\uff08\u30b9\u30de\u30fc\u30c8\u30db\u30b9\u30c8\uff09<\/td>\n<td>smtp.office365.com<\/td>\n<\/tr>\n<tr>\n<td>\u30dd\u30fc\u30c8\u756a\u53f7<\/td>\n<td>587\uff08\u63a8\u5968\uff09\uff0f25<\/td>\n<\/tr>\n<tr>\n<td>\u6697\u53f7\u5316<\/td>\n<td>TLS\uff0fSTARTTLS \u3092\u6709\u52b9\uff08TLS 1.2 \u307e\u305f\u306f TLS 1.3\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u8a8d\u8a3c<\/td>\n<td>\u5fc5\u8981\uff08Microsoft 365\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u30e6\u30fc\u30b6\u30fc\u540d<\/td>\n<td>\u9001\u4fe1\u306b\u4f7f\u3046\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u53d7\u4fe1\u5074\u306e\u8a2d\u5b9a\u5024\u3082\u4f75\u305b\u3066\u6574\u7406\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n<div class=\"su-table su-table-alternate\">\n<table>\n<thead>\n<tr>\n<th>\u30d7\u30ed\u30c8\u30b3\u30eb<\/th>\n<th>\u30b5\u30fc\u30d0\u30fc\u540d<\/th>\n<th>\u30dd\u30fc\u30c8\u756a\u53f7<\/th>\n<th>\u6697\u53f7\u5316<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>IMAP<\/td>\n<td>outlook.office365.com<\/td>\n<td>993<\/td>\n<td>TLS<\/td>\n<\/tr>\n<tr>\n<td>POP3<\/td>\n<td>outlook.office365.com<\/td>\n<td>995<\/td>\n<td>TLS<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u3053\u3053\u3067\u6ce8\u610f\u3057\u305f\u3044\u306e\u304c\u3001<strong>\u30b5\u30fc\u30d0\u30fc\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u76f4\u63a5\u6307\u5b9a\u3057\u3066\u306f\u3044\u3051\u306a\u3044<\/strong>\u3068\u3044\u3046\u70b9\u3067\u3059\u3002Microsoft 365\u306e\u9001\u4fe1\u30b5\u30fc\u30d0\u30fc\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\u4e88\u544a\u306a\u304f\u5909\u308f\u308a\u307e\u3059\u3002\u5fc5\u305a\u30db\u30b9\u30c8\u540d <code>smtp.office365.com<\/code> \u3092\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u30dd\u30fc\u30c8465\u304c\u4f7f\u3048\u306a\u3044\u7406\u7531<\/h3>\n<p>\u53e4\u3044\u8907\u5408\u6a5f\u3084\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001SMTP\u306e\u30dd\u30fc\u30c8\u3068\u3057\u3066465\u304c\u65e2\u5b9a\u5024\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001<strong>Microsoft 365\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8SMTP\u9001\u4fe1\u3067\u306f\u30dd\u30fc\u30c8465\u306f\u4f7f\u3048\u307e\u305b\u3093<\/strong>\u3002Microsoft\u306f\u3001\u30dd\u30fc\u30c8465\u3067\u5fc5\u8981\u3068\u306a\u308bTLS\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u306a\u3044\u3068\u660e\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u540c\u69d8\u306b\u3001\u30c7\u30d0\u30a4\u30b9\u5074\u304cTLS 1.2\u4ee5\u4e0a\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3082\u3001Microsoft 365\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8SMTP\u9001\u4fe1\u306f\u5229\u7528\u3067\u304d\u307e\u305b\u3093\u3002\u5c0e\u5165\u304b\u308910\u5e74\u8fd1\u304f\u7d4c\u904e\u3057\u305f\u8907\u5408\u6a5f\u3084\u30ec\u30ac\u30b7\u30fc\u306a\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u3053\u3053\u3067\u8a70\u307e\u308b\u30b1\u30fc\u30b9\u304c\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u30dd\u30fc\u30c825\u3082\u4ed5\u69d8\u4e0a\u306f\u5229\u7528\u53ef\u80fd\u3067\u3059\u304c\u3001\u591a\u304f\u306eISP\u304c\u9001\u4fe1\u5074\u306e25\u756a\u30dd\u30fc\u30c8\u3092\u906e\u65ad\uff08OP25B\uff09\u3057\u3066\u3044\u308b\u307b\u304b\u3001\u793e\u5185\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3067\u585e\u304c\u308c\u3066\u3044\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002<strong>\u57fa\u672c\u306f587\u756a\u30dd\u30fc\u30c8\uff0bSTARTTLS<\/strong>\u3068\u7406\u89e3\u3057\u3066\u304a\u3051\u3070\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h3>Outlook.com\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u3068\u306e\u9055\u3044<\/h3>\n<p>\u500b\u4eba\u5411\u3051\u306eOutlook.com\u3068\u3001\u6cd5\u4eba\u5411\u3051\u306eMicrosoft 365\u306f\u540d\u524d\u304c\u4f3c\u3066\u3044\u308b\u305f\u3081\u6df7\u540c\u3055\u308c\u304c\u3061\u3067\u3059\u304c\u3001SMTP\u30b5\u30fc\u30d0\u30fc\u3082\u904b\u7528\u3082\u5225\u7269\u3067\u3059\u3002<\/p>\n<div class=\"su-table su-table-alternate\">\n<table>\n<thead>\n<tr>\n<th>\u9805\u76ee<\/th>\n<th>Outlook.com\uff08\u500b\u4eba\u5411\u3051\uff09<\/th>\n<th>Microsoft 365\uff08\u6cd5\u4eba\u5411\u3051\uff09<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>SMTP\u30b5\u30fc\u30d0\u30fc\u540d<\/td>\n<td>smtp-mail.outlook.com<\/td>\n<td>smtp.office365.com<\/td>\n<\/tr>\n<tr>\n<td>\u5951\u7d04\u5f62\u614b<\/td>\n<td>\u7121\u6599\uff0f\u500b\u4eba\u5411\u3051\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3<\/td>\n<td>\u6cd5\u4eba\u5411\u3051\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3<\/td>\n<\/tr>\n<tr>\n<td>\u7ba1\u7406\u8005\u306b\u3088\u308b\u5236\u5fa1<\/td>\n<td>\u306a\u3057<\/td>\n<td>Exchange\u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\u3067\u4e00\u5143\u7ba1\u7406<\/td>\n<\/tr>\n<tr>\n<td>\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u9023\u643a<\/td>\n<td>\u60f3\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044<\/td>\n<td>\u8907\u5408\u6a5f\u30fb\u57fa\u5e79\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u306e\u9001\u4fe1\u3092\u60f3\u5b9a<\/td>\n<\/tr>\n<tr>\n<td>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c<\/td>\n<td>\u6cd5\u4eba\u904b\u7528\u3092\u524d\u63d0\u3068\u3057\u305f\u7ba1\u7406\u6a5f\u80fd\u306f\u975e\u5bfe\u5fdc<\/td>\n<td>\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u3067SPF\uff0fDKIM\uff0fDMARC\u8a2d\u5b9a\u304c\u53ef\u80fd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u306e\u9001\u4fe1\u5143\u3068\u3057\u3066\u4f7f\u3046\u306e\u3067\u3042\u308c\u3070\u3001<strong>\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u3067\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u8a2d\u5b9a\u3067\u304d\u308bMicrosoft 365\uff08Exchange Online\uff09<\/strong>\u304c\u524d\u63d0\u306b\u306a\u308a\u307e\u3059\u3002Outlook.com\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u306e\u9001\u4fe1\u5143\u306b\u6d41\u7528\u3059\u308b\u904b\u7528\u306f\u3001\u306a\u308a\u3059\u307e\u3057\u5224\u5b9a\u306e\u30ea\u30b9\u30af\u304c\u9ad8\u304f\u907f\u3051\u308b\u3079\u304d\u3067\u3059\u3002<\/p>\n<h2>Microsoft 365\u304b\u3089\u30e1\u30fc\u30eb\u3092\u9001\u308b4\u3064\u306e\u65b9\u5f0f\u3068\u4f7f\u3044\u5206\u3051<\/h2>\n<p>\u3053\u3053\u304c\u672c\u8a18\u4e8b\u3067\u6700\u3082\u62bc\u3055\u3048\u3066\u307b\u3057\u3044\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002Microsoft 365\u304b\u3089\u30c7\u30d0\u30a4\u30b9\u3084\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u65b9\u6cd5\u306f\u3001\u3072\u3068\u3064\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002Microsoft\u306f\u516c\u5f0f\u306b<strong>4\u3064\u306e\u65b9\u5f0f<\/strong>\u3092\u7528\u610f\u3057\u3066\u304a\u308a\u3001\u305d\u308c\u305e\u308c\u300c\u8ab0\u306b\u9001\u308c\u308b\u304b\u300d\u300c\u4f55\u304c\u5fc5\u8981\u304b\u300d\u304c\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u591a\u304f\u306e\u30c8\u30e9\u30d6\u30eb\u306f\u3001<strong>\u8981\u4ef6\u306b\u5408\u3063\u3066\u3044\u306a\u3044\u65b9\u5f0f\u3092\u9078\u3093\u3067\u3057\u307e\u3063\u305f\u3053\u3068<\/strong>\u304c\u539f\u56e0\u3067\u3059\u3002\u307e\u305a\u5168\u4f53\u50cf\u3092\u8868\u3067\u62bc\u3055\u3048\u307e\u3059\u3002<\/p>\n<div class=\"su-table su-table-alternate\">\n<table>\n<thead>\n<tr>\n<th>\u6bd4\u8f03\u9805\u76ee<\/th>\n<th>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8SMTP\u9001\u4fe1<\/th>\n<th>SMTP\u30ea\u30ec\u30fc<\/th>\n<th>\u76f4\u63a5\u9001\u4fe1<\/th>\n<th>High Volume Email<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u793e\u5185\uff08\u81ea\u30c9\u30e1\u30a4\u30f3\uff09\u5b9b\u306e\u9001\u4fe1<\/td>\n<td>\u53ef\u80fd<\/td>\n<td>\u53ef\u80fd<\/td>\n<td>\u53ef\u80fd<\/td>\n<td>\u53ef\u80fd<\/td>\n<\/tr>\n<tr>\n<td>\u793e\u5916\uff08\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\uff09\u5b9b\u306e\u9001\u4fe1<\/td>\n<td>\u53ef\u80fd<\/td>\n<td>\u53ef\u80fd<\/td>\n<td><strong>\u4e0d\u53ef<\/strong><\/td>\n<td><strong>\u4e0d\u53ef<\/strong><\/td>\n<\/tr>\n<tr>\n<td>\u4f7f\u7528\u30dd\u30fc\u30c8<\/td>\n<td>587 \u307e\u305f\u306f 25<\/td>\n<td>25<\/td>\n<td>25<\/td>\n<td>587<\/td>\n<\/tr>\n<tr>\n<td>\u8a8d\u8a3c\u65b9\u6cd5<\/td>\n<td>ID\uff0f\u30d1\u30b9\u30ef\u30fc\u30c9\uff08OAuth\u63a8\u5968\uff09<\/td>\n<td>\u9759\u7684IP\u307e\u305f\u306fTLS\u8a3c\u660e\u66f8<\/td>\n<td>\u8a8d\u8a3c\u306a\u3057<\/td>\n<td>HVE\u30a2\u30ab\u30a6\u30f3\u30c8\uff0fOAuth<\/td>\n<\/tr>\n<tr>\n<td>\u30e9\u30a4\u30bb\u30f3\u30b9\u4ed8\u304d\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9<\/td>\n<td>\u5fc5\u8981<\/td>\n<td>\u4e0d\u8981<\/td>\n<td>\u4e0d\u8981<\/td>\n<td>\u4e0d\u8981<\/td>\n<\/tr>\n<tr>\n<td>\u5916\u90e8\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306e\u30a2\u30d7\u30ea\u304b\u3089\u306e\u9001\u4fe1<\/td>\n<td>\u53ef\u80fd<\/td>\n<td>\u4e0d\u53ef<\/td>\n<td>\u53ef\u80fd<\/td>\n<td>\u53ef\u80fd<\/td>\n<\/tr>\n<tr>\n<td>\u9001\u4fe1\u4e0a\u9650<\/td>\n<td>10,000\u5b9b\u5148\uff0f\u65e5\u300130\u901a\uff0f\u5206<\/td>\n<td>\u5408\u7406\u7684\u306a\u7bc4\u56f2\u3067\u306e\u5236\u9650<\/td>\n<td>\u533f\u540d\u30e1\u30fc\u30eb\u76f8\u5f53\u306e\u5236\u9650<\/td>\n<td>\u53d7\u4fe1\u8005\u6570\u306e\u5236\u9650\u306a\u3057<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8SMTP\u9001\u4fe1\uff08SMTP AUTH\uff09<\/h3>\n<p>\u3082\u3063\u3068\u3082\u4e00\u822c\u7684\u306a\u65b9\u5f0f\u3067\u3059\u3002Microsoft 365\u306e\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306eID\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u3067\u8a8d\u8a3c\u3057\u3001<code>smtp.office365.com<\/code> 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As\uff09\u300d\u306e\u6a29\u9650\u4ed8\u4e0e\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p>\u305d\u3057\u3066\u6700\u5927\u306e\u8ad6\u70b9\u304c\u3001\u3053\u306e\u65b9\u5f0f\u304c\u57fa\u672c\u8a8d\u8a3c\u306e\u65e2\u5b9a\u30aa\u30d5\u5bfe\u8c61\u3067\u3042\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<h3>SMTP\u30ea\u30ec\u30fc\uff08\u30b3\u30cd\u30af\u30bf\u7d4c\u7531\uff09<\/h3>\n<p>Exchange\u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\u3067<strong>\u53d7\u4fe1\u30b3\u30cd\u30af\u30bf<\/strong>\u3092\u4f5c\u6210\u3057\u3001\u81ea\u793e\u306eIP\u30a2\u30c9\u30ec\u30b9\u307e\u305f\u306fTLS\u8a3c\u660e\u66f8\u3067Microsoft 365\u306b\u8a8d\u8a3c\u3055\u305b\u308b\u65b9\u5f0f\u3067\u3059\u3002\u9001\u4fe1\u5148\u306fMX\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\uff08<code>contoso-com.mail.protection.outlook.com<\/code> \u306e\u5f62\u5f0f\uff09\u3001\u30dd\u30fc\u30c8\u306f25\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u65b9\u5f0f\u306e\u5f37\u307f\u306f\u3001<strong>\u30e9\u30a4\u30bb\u30f3\u30b9\u4ed8\u304d\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u304c\u4e0d\u8981<\/strong>\u3067\u3001\u627f\u8a8d\u6e08\u307f\u30c9\u30e1\u30a4\u30f3\u5185\u3067\u3042\u308c\u3070\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u3092\u6301\u305f\u306a\u3044\u30a2\u30c9\u30ec\u30b9\uff08<code>noreply@example.co.jp<\/code> \u306a\u3069\uff09\u3092\u5dee\u51fa\u4eba\u306b\u3067\u304d\u308b\u70b9\u3067\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8SMTP\u9001\u4fe1\u3088\u308a\u9001\u4fe1\u4e0a\u9650\u3082\u7de9\u3084\u304b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u8981\u4ef6\u306f\u91cd\u304f\u306a\u308a\u307e\u3059\u3002\u4ed6\u7d44\u7e54\u3068\u5171\u6709\u3057\u3066\u3044\u306a\u3044<strong>\u9759\u7684\u306a\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9<\/strong>\u3001\u307e\u305f\u306f\u30c9\u30e1\u30a4\u30f3\u3092\u542b\u3080TLS\u8a3c\u660e\u66f8\u304c\u5fc5\u9808\u3067\u3059\u3002\u305d\u3057\u3066<strong>Azure\u306a\u3069\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u30af\u30e9\u30a6\u30c9\u3067\u30db\u30b9\u30c8\u3055\u308c\u305f\u30b5\u30fc\u30d3\u30b9\u304b\u3089\u306e\u30ea\u30ec\u30fc\u306f\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u305b\u3093<\/strong>\u3002\u30aa\u30f3\u30d7\u30ec\u30df\u30b9\u8a2d\u5099\u3092\u524d\u63d0\u3068\u3057\u305f\u65b9\u5f0f\u3067\u3042\u308b\u70b9\u306f\u62bc\u3055\u3048\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u76f4\u63a5\u9001\u4fe1\uff08Direct Send\uff09<\/h3>\n<p>\u8a8d\u8a3c\u3092\u4e00\u5207\u884c\u308f\u305a\u3001\u30c7\u30d0\u30a4\u30b9\u304b\u3089\u81ea\u793e\u306eMX\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3078\u76f4\u63a5\u30e1\u30fc\u30eb\u3092\u6295\u3052\u8fbc\u3080\u65b9\u5f0f\u3067\u3059\u3002Microsoft 365\u5074\u306e\u8a2d\u5b9a\u304c\u4e0d\u8981\u306a\u305f\u3081\u3001\u624b\u3063\u53d6\u308a\u65e9\u3044\u65b9\u6cd5\u3068\u3057\u3066\u9078\u3070\u308c\u304c\u3061\u3067\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001<strong>\u5b9b\u5148\u306f\u81ea\u793eMicrosoft 365\u5185\u306e\u53d7\u4fe1\u8005\u306b\u9650\u5b9a\u3055\u308c\u307e\u3059<\/strong>\u3002Gmail\u3084Yahoo!\u30e1\u30fc\u30eb\u306a\u3069\u7d44\u7e54\u5916\u306e\u30a2\u30c9\u30ec\u30b9\u5b9b\u306f\u62d2\u5426\u3055\u308c\u307e\u3059\u3002\u793e\u5185\u5411\u3051\u306e\u901a\u77e5\u306b\u3057\u304b\u4f7f\u3048\u306a\u3044\u3001\u3068\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u52a0\u3048\u3066Microsoft\u306f\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3067\u3001\u76f4\u63a5\u9001\u4fe1\u306f\u591a\u304f\u306e\u5229\u7528\u8005\u306b\u3068\u3063\u3066\u5fc5\u8981\u306a\u65b9\u5f0f\u3067\u306f\u306a\u304f\u3001\u5229\u7528\u8005\u4fdd\u8b77\u306e\u305f\u3081\u306b\u65e2\u5b9a\u3067\u7121\u52b9\u5316\u3059\u308b\u65b9\u5411\u3067\u691c\u8a0e\u3057\u3066\u3044\u308b\u3068\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\uff08\u51fa\u5178\uff1aMicrosoft Learn\uff09\u3002<strong>\u5c06\u6765\u7684\u306b\u9589\u3058\u3089\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u65b9\u5f0f<\/strong>\u3067\u3042\u308a\u3001\u65b0\u898f\u306e\u69cb\u6210\u3067\u7a4d\u6975\u7684\u306b\u9078\u3076\u7406\u7531\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h3>High Volume Email\uff08HVE\uff09<\/h3>\n<p>2026\u5e743\u6708\u306b\u4e00\u822c\u63d0\u4f9b\uff08GA\uff09\u304c\u958b\u59cb\u3055\u308c\u305f\u3001\u5927\u91cf\u9001\u4fe1\u5c02\u7528\u306e\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002\u5c02\u7528\u306eHVE\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u4f7f\u3044\u3001\u30dd\u30fc\u30c8587\u3067\u9001\u4fe1\u3057\u307e\u3059\u3002\u53d7\u4fe1\u8005\u30ec\u30fc\u30c8\u5236\u9650\u3084\u30e1\u30c3\u30bb\u30fc\u30b8\u30ec\u30fc\u30c8\u5236\u9650\u304c\u304b\u304b\u3089\u306a\u3044\u305f\u3081\u3001\u4eba\u4e8b\u30b7\u30b9\u30c6\u30e0\u306e\u4e00\u6589\u901a\u77e5\u3084\u76e3\u8996\u30a2\u30e9\u30fc\u30c8\u306a\u3069\u3001\u793e\u5185\u5411\u3051\u306e\u5927\u91cf\u914d\u4fe1\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u6c7a\u5b9a\u7684\u306a\u5236\u7d04\u304c\u3042\u308a\u307e\u3059\u3002<strong>HVE\u306f\u5185\u90e8\u53d7\u4fe1\u8005\u5c02\u7528\u306e\u6a5f\u80fd\u3067\u3042\u308a\u3001\u5916\u90e8\u53d7\u4fe1\u8005\u3078\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u6a5f\u80fd\u306f\u524a\u9664\u3055\u308c\u307e\u3057\u305f<\/strong>\u3002\u3064\u307e\u308a\u3001\u9867\u5ba2\u5411\u3051\u306e\u30e1\u30eb\u30de\u30ac\u3084\u4f1a\u54e1\u5411\u3051\u306e\u901a\u77e5\u306b\u306f\u4e00\u5207\u4f7f\u3048\u307e\u305b\u3093\u3002<\/p>\n<p>\u8ab2\u91d1\u3082\u59cb\u307e\u3063\u3066\u3044\u307e\u3059\u3002Microsoft\u306e\u30a2\u30ca\u30a6\u30f3\u30b9\u306b\u3088\u308c\u3070\u3001HVE\u306e\u8ab2\u91d1\u306f2026\u5e746\u67081\u65e5\u306b\u958b\u59cb\u3055\u308c\u3066\u304a\u308a\u3001\u6599\u91d1\u306f<strong>100\u4e07\u53d7\u4fe1\u8005\u3042\u305f\u308a42\u7c73\u30c9\u30eb<\/strong>\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u8ab2\u91d1\u3067\u3059\u3002\u30aa\u30d7\u30c8\u30a4\u30f3\u306e\u6a5f\u80fd\u3067\u3042\u308b\u305f\u3081\u3001\u5229\u7528\u3059\u308b\u5834\u5408\u306f\u7ba1\u7406\u8005\u304c\u8ab2\u91d1\u8a2d\u5b9a\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001Microsoft\u81ea\u8eab\u304c\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3067<strong>\u300c\u5185\u90e8\u304a\u3088\u3073\u5916\u90e8\u306e\u53d7\u4fe1\u8005\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u5834\u5408\u306fAzure Communication Services Email\u3092\u4f7f\u7528\u3059\u308b\u300d<\/strong>\u3068\u6848\u5185\u3057\u3066\u3044\u307e\u3059\u3002\u88cf\u3092\u8fd4\u305b\u3070\u3001<strong>\u5916\u90e8\u5b9b\u306e\u5927\u91cf\u9001\u4fe1\u306b\u3064\u3044\u3066\u3001Microsoft 365\u306f\u89e3\u6c7a\u7b56\u3092\u7528\u610f\u3057\u3066\u3044\u306a\u3044<\/strong>\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u3053\u306e\u4e8b\u5b9f\u304c\u3001\u5f8c\u8ff0\u3059\u308b\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u306e\u5fc5\u8981\u6027\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002<\/p>\n<p>\u53c2\u8003\uff1a<a href=\"https:\/\/learn.microsoft.com\/ja-jp\/exchange\/mail-flow-best-practices\/how-to-set-up-a-multifunction-device-or-application-to-send-email-using-microsoft-365-or-office-365\" target=\"_blank\" rel=\"noopener\">Microsoft 365\u307e\u305f\u306fOffice 365\u3092\u4f7f\u7528\u3057\u3066\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u3088\u3046\u306b\u591a\u6a5f\u80fd\u30c7\u30d0\u30a4\u30b9\u307e\u305f\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3059\u308b\u65b9\u6cd5\uff08Microsoft Learn\uff09<\/a><\/p>\n<h2>Microsoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u8a2d\u5b9a\u624b\u9806<\/h2>\n<p>\u3053\u3053\u304b\u3089\u306f\u3001\u3082\u3063\u3068\u3082\u5229\u7528\u6a5f\u4f1a\u306e\u591a\u3044\u30af\u30e9\u30a4\u30a2\u30f3\u30c8SMTP\u9001\u4fe1\uff08SMTP AUTH\uff09\u3092\u6709\u52b9\u5316\u3057\u3001\u5b9f\u969b\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304f\u72b6\u614b\u306b\u3059\u308b\u307e\u3067\u306e\u624b\u9806\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p>\u524d\u63d0\u3068\u3057\u3066\u91cd\u8981\u306a\u4e8b\u5b9f\u304c\u3042\u308a\u307e\u3059\u3002<strong>2020\u5e741\u6708\u4ee5\u964d\u306b\u4f5c\u6210\u3055\u308c\u305f\u30c6\u30ca\u30f3\u30c8\u3067\u306f\u3001SMTP AUTH\u306f\u65e2\u5b9a\u3067\u7121\u52b9<\/strong>\u3067\u3059\u3002\u300c\u8a2d\u5b9a\u5024\u3092\u5165\u308c\u305f\u306e\u306b\u9001\u308c\u306a\u3044\u300d\u3068\u3044\u3046\u76f8\u8ac7\u306e\u5927\u534a\u306f\u3001\u3053\u306e\u6709\u52b9\u5316\u3092\u98db\u3070\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u539f\u56e0\u3067\u3059\u3002<\/p>\n<h3>STEP 1\uff1a\u30c6\u30ca\u30f3\u30c8\u5168\u4f53\u306eSMTP AUTH\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n<p>Microsoft 365\u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\u304b\u3089Exchange\u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\uff08EAC\uff09\u3078\u79fb\u52d5\u3057\u3001\u7d44\u7e54\u5168\u4f53\u306e\u8a2d\u5b9a\u3067SMTP AUTH\u304c\u7121\u52b9\u5316\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u30c6\u30ca\u30f3\u30c8\u5358\u4f4d\u3067\u7121\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u5834\u5408\u3001\u500b\u5225\u306e\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u3092\u3044\u304f\u3089\u8a2d\u5b9a\u3057\u3066\u3082\u9001\u4fe1\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>PowerShell\u3067\u78ba\u8a8d\u30fb\u5909\u66f4\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002\u904b\u7528\u3068\u3057\u3066\u306f\u3001<strong>\u30c6\u30ca\u30f3\u30c8\u5168\u4f53\u3067\u306f\u7121\u52b9\u306e\u307e\u307e\u3001\u9001\u4fe1\u306b\u4f7f\u3046\u7279\u5b9a\u306e\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u3060\u3051\u3092\u6709\u52b9\u306b\u3059\u308b<\/strong>\u306e\u304c\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u5b9a\u77f3\u3067\u3059\u3002<\/p>\n<h3>STEP 2\uff1a\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u5358\u4f4d\u3067SMTP AUTH\u3092\u6709\u52b9\u306b\u3059\u308b<\/h3>\n<p>Microsoft 365\u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\u306e\uff3b\u30e6\u30fc\u30b6\u30fc\uff3d\u2192\uff3b\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30e6\u30fc\u30b6\u30fc\uff3d\u304b\u3089\u5bfe\u8c61\u30e6\u30fc\u30b6\u30fc\u3092\u9078\u3073\u3001\uff3b\u30e1\u30fc\u30eb\uff3d\u30bf\u30d6\u306e\uff3b\u30e1\u30fc\u30eb\u30a2\u30d7\u30ea\u306e\u7ba1\u7406\uff3d\u3067\u300c\u8a8d\u8a3c\u6e08\u307fSMTP\u300d\u3092\u6709\u52b9\u306b\u3057\u307e\u3059\uff08Exchange\u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\u306e\uff3b\u53d7\u4fe1\u8005\uff3d\u2192\uff3b\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\uff3d\u304b\u3089\u3082\u8a2d\u5b9a\u3067\u304d\u307e\u3059\uff09\u3002\u3053\u3053\u3067\u6709\u52b9\u5316\u3055\u308c\u308b\u306e\u306f\u3001\u305d\u306e\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b91\u3064\u3060\u3051\u3067\u3059\u3002<\/p>\n<p>\u8907\u5408\u6a5f\u3001\u57fa\u5e79\u30b7\u30b9\u30c6\u30e0\u3001Web\u30b5\u30fc\u30d0\u30fc\u306a\u3069\u3001\u9001\u4fe1\u5143\u304c\u8907\u6570\u3042\u308b\u5834\u5408\u306f\u7528\u9014\u3054\u3068\u306b\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u3092\u5206\u3051\u3066\u304a\u304f\u3068\u3001\u5f8c\u3005\u306e\u30c8\u30e9\u30d6\u30eb\u5207\u308a\u5206\u3051\u304c\u683c\u6bb5\u306b\u697d\u306b\u306a\u308a\u307e\u3059\u30021\u3064\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u3059\u3079\u3066\u306e\u6a5f\u5668\u3067\u4f7f\u3044\u56de\u3059\u3068\u3001\u9001\u4fe1\u5236\u9650\u306b\u9054\u3057\u305f\u3068\u304d\u306b\u3069\u306e\u6a5f\u5668\u304c\u539f\u56e0\u304b\u7279\u5b9a\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>STEP 3\uff1a\u9001\u4fe1\u5074\u306e\u30c7\u30d0\u30a4\u30b9\u30fb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u8a2d\u5b9a\u5024\u3092\u5165\u529b\u3059\u308b<\/h3>\n<p>\u8907\u5408\u6a5f\u3084\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u306e\u8a2d\u5b9a\u753b\u9762\u306b\u3001\u524d\u8ff0\u306e\u8a2d\u5b9a\u5024\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>\u30b5\u30fc\u30d0\u30fc\u540d\uff1asmtp.office365.com<\/li>\n<li>\u30dd\u30fc\u30c8\uff1a587<\/li>\n<li>\u6697\u53f7\u5316\uff1aSTARTTLS\uff08TLS 1.2\u4ee5\u4e0a\uff09<\/li>\n<li>\u30e6\u30fc\u30b6\u30fc\u540d\uff1a\u9001\u4fe1\u7528\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9<\/li>\n<li>\u30d1\u30b9\u30ef\u30fc\u30c9\uff1a\u8a72\u5f53\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\uff08\u307e\u305f\u306f\u591a\u8981\u7d20\u8a8d\u8a3c\u5229\u7528\u6642\u306f\u30a2\u30d7\u30ea\u30d1\u30b9\u30ef\u30fc\u30c9\uff09<\/li>\n<\/ul>\n<\/div>\n<p>\u5dee\u51fa\u4eba\u30a2\u30c9\u30ec\u30b9\u306f\u3001\u539f\u5247\u3068\u3057\u3066\u8a8d\u8a3c\u306b\u4f7f\u3063\u305f\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306e\u30a2\u30c9\u30ec\u30b9\u3068\u4e00\u81f4\u3055\u305b\u307e\u3059\u3002\u5225\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u5dee\u51fa\u4eba\u306b\u3057\u305f\u3044\u5834\u5408\u306f\u3001STEP 2\u3067\u7528\u610f\u3057\u305f\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u5bfe\u3057\u3066\u300c\u9001\u4fe1\u8005\uff08Send As\uff09\u300d\u6a29\u9650\u3092\u4ed8\u4e0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6a29\u9650\u304c\u306a\u3044\u72b6\u614b\u3067\u9001\u4fe1\u3059\u308b\u3068\u3001<code>5.7.60 Client does not have permissions to send as this sender<\/code> \u3068\u3044\u3046\u30a8\u30e9\u30fc\u3067\u5f3e\u304b\u308c\u307e\u3059\u3002<\/p>\n<h3>STEP 4\uff1aSPF\u30fbDKIM\u30fbDMARC\u3092\u8a2d\u5b9a\u3059\u308b<\/h3>\n<p>\u9001\u4fe1\u3067\u304d\u308b\u3053\u3068\u3068\u3001\u5c4a\u304f\u3053\u3068\u306f\u5225\u554f\u984c\u3067\u3059\u3002Gmail\u3084Yahoo!\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u8005\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3067\u306f\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u8a2d\u5b9a\u304c\u4e8b\u5b9f\u4e0a\u306e\u5fc5\u9808\u8981\u4ef6\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>SPF<\/strong>\uff1aDNS\u306eTXT\u30ec\u30b3\u30fc\u30c9\u306b include:spf.protection.outlook.com \u3092\u542b\u3081\u308b<\/li>\n<li><strong>DKIM<\/strong>\uff1aMicrosoft 365\u306e\u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\u304b\u3089\u5bfe\u8c61\u30c9\u30e1\u30a4\u30f3\u306eDKIM\u7f72\u540d\u3092\u6709\u52b9\u5316\u3059\u308b<\/li>\n<li><strong>DMARC<\/strong>\uff1a_dmarc.example.co.jp \u306b\u30dd\u30ea\u30b7\u30fc\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b<\/li>\n<\/ul>\n<\/div>\n<p>\u3053\u3053\u3067\u983b\u51fa\u3059\u308b\u843d\u3068\u3057\u7a74\u304c\u3001<strong>SPF\u30ec\u30b3\u30fc\u30c9\u306e10\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u5236\u9650<\/strong>\u3067\u3059\u3002Microsoft 365\u306b\u52a0\u3048\u3001MA\u30c4\u30fc\u30eb\u3001\u554f\u3044\u5408\u308f\u305b\u30d5\u30a9\u30fc\u30e0\u3001\u52e4\u6020\u30b7\u30b9\u30c6\u30e0\u306a\u3069\u8907\u6570\u306e\u30b5\u30fc\u30d3\u30b9\u3092include\u3057\u3066\u3044\u304f\u3068\u3001DNS\u53c2\u7167\u56de\u6570\u304c10\u56de\u3092\u8d85\u3048\u3066 <code>permerror<\/code> \u3068\u306a\u308a\u3001SPF\u8a8d\u8a3c\u305d\u306e\u3082\u306e\u304c\u5931\u6557\u3057\u307e\u3059\u3002include\u306e\u6570\u304c\u5897\u3048\u3066\u304d\u305f\u3089\u3001\u5fc5\u305a\u691c\u8a3c\u30c4\u30fc\u30eb\u3067\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u56de\u6570\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>STEP 5\uff1a\u30c6\u30b9\u30c8\u9001\u4fe1\u3067\u758e\u901a\u3068\u5230\u9054\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n<p>\u8a2d\u5b9a\u304c\u7d42\u308f\u3063\u305f\u3089\u3001\u5fc5\u305a\u8907\u6570\u306e\u5b9b\u5148\u306b\u30c6\u30b9\u30c8\u9001\u4fe1\u3057\u307e\u3059\u3002\u78ba\u8a8d\u3059\u3079\u304d\u306f\u4ee5\u4e0b\u306e3\u70b9\u3067\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>\u9001\u4fe1\u81ea\u4f53\u304c\u6210\u529f\u3059\u308b\u304b\uff08SMTP\u30a8\u30e9\u30fc\u304c\u8fd4\u3089\u306a\u3044\u304b\uff09<\/li>\n<li>\u793e\u5916\u30c9\u30e1\u30a4\u30f3\uff08Gmail\u3001Yahoo!\u30e1\u30fc\u30eb\u306a\u3069\uff09\u306b\u5c4a\u304f\u304b<\/li>\n<li>\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5165\u308b\u304b\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u308b\u304b<\/li>\n<\/ul>\n<\/div>\n<p>Gmail\u306b\u5c4a\u3044\u305f\u30e1\u30fc\u30eb\u306e\u300c\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30bd\u30fc\u30b9\u3092\u8868\u793a\u300d\u304b\u3089SPF\u30fbDKIM\u30fbDMARC\u306e\u8a8d\u8a3c\u7d50\u679c\uff08<code>PASS<\/code> \u304b\u3069\u3046\u304b\uff09\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u3053\u3053\u307e\u3067\u78ba\u8a8d\u3057\u3066\u3001\u521d\u3081\u3066\u8a2d\u5b9a\u5b8c\u4e86\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n<h2>2026\u5e7412\u6708\u3001SMTP\u306e\u57fa\u672c\u8a8d\u8a3c\u304c\u65e2\u5b9a\u30aa\u30d5\u306b<\/h2>\n<p>\u3053\u3053\u304b\u3089\u304c\u30012026\u5e74\u4ee5\u964d\u306e\u30e1\u30fc\u30eb\u904b\u7528\u3067\u3082\u3063\u3068\u3082\u91cd\u8981\u306a\u8ad6\u70b9\u3067\u3059\u3002<\/p>\n<p>Microsoft\u306f\u3001Exchange Online\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u9001\u4fe1\uff08SMTP AUTH\uff09\u306b\u304a\u3051\u308b\u57fa\u672c\u8a8d\u8a3c\u306e\u5ec3\u6b62\u3092\u9032\u3081\u3066\u3044\u307e\u3059\u3002\u5f53\u521d\u306f2025\u5e749\u6708\u3001\u305d\u306e\u5f8c2026\u5e743\u6708\u301c4\u6708\u3068\u4e88\u5b9a\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u304c\u30012026\u5e741\u670827\u65e5\u306b\u516c\u958b\u3055\u308c\u305f\u6700\u65b0\u306e\u30ed\u30fc\u30c9\u30de\u30c3\u30d7\u3067\u6bb5\u968e\u7684\u306a\u79fb\u884c\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u306b\u6539\u3081\u3089\u308c\u307e\u3057\u305f\u3002<\/p>\n<h3>\u73fe\u6642\u70b9\u3067\u6c7a\u307e\u3063\u3066\u3044\u308b\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb<\/h3>\n<div class=\"su-table su-table-alternate\">\n<table>\n<thead>\n<tr>\n<th>\u6642\u671f<\/th>\n<th>\u5bfe\u8c61<\/th>\n<th>\u4f55\u304c\u8d77\u304d\u308b\u304b<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u73fe\u5728\u301c2026\u5e7412\u6708<\/td>\n<td>\u5168\u65e2\u5b58\u30c6\u30ca\u30f3\u30c8<\/td>\n<td>\u52d5\u4f5c\u306b\u5909\u66f4\u306a\u3057\u3002\u57fa\u672c\u8a8d\u8a3c\u306b\u3088\u308bSMTP\u9001\u4fe1\u306f\u5f15\u304d\u7d9a\u304d\u5229\u7528\u53ef\u80fd<\/td>\n<\/tr>\n<tr>\n<td>2026\u5e7412\u6708\u672b<\/td>\n<td>\u65e2\u5b58\u30c6\u30ca\u30f3\u30c8<\/td>\n<td><strong>\u57fa\u672c\u8a8d\u8a3c\u304c\u65e2\u5b9a\u3067\u7121\u52b9\u5316\u3055\u308c\u308b<\/strong>\u3002\u7ba1\u7406\u8005\u304c\u660e\u793a\u7684\u306b\u6709\u52b9\u5316\u3059\u308c\u3070\u7d99\u7d9a\u5229\u7528\u306f\u53ef\u80fd<\/td>\n<\/tr>\n<tr>\n<td>2026\u5e7412\u6708\u4ee5\u964d\u306b\u4f5c\u6210<\/td>\n<td>\u65b0\u898f\u30c6\u30ca\u30f3\u30c8<\/td>\n<td>\u57fa\u672c\u8a8d\u8a3c\u306f\u65e2\u5b9a\u3067\u5229\u7528\u4e0d\u53ef\u3002OAuth\u304c\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u308b\u8a8d\u8a3c\u65b9\u5f0f\u3068\u306a\u308b<\/td>\n<\/tr>\n<tr>\n<td>2027\u5e74\u5f8c\u534a<\/td>\n<td>\u5168\u30c6\u30ca\u30f3\u30c8<\/td>\n<td>\u57fa\u672c\u8a8d\u8a3c\u306e<strong>\u6700\u7d42\u7684\u306a\u524a\u9664\u65e5<\/strong>\u304c\u30a2\u30ca\u30a6\u30f3\u30b9\u3055\u308c\u308b\u4e88\u5b9a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u6ce8\u610f\u3059\u3079\u304d\u306f\u3001<strong>2026\u5e7412\u6708\u672b\u306e\u300c\u65e2\u5b9a\u3067\u7121\u52b9\u5316\u300d\u306f\u7336\u4e88\u3067\u3042\u3063\u3066\u514d\u9664\u3067\u306f\u306a\u3044<\/strong>\u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u7ba1\u7406\u8005\u304c\u518d\u5ea6\u6709\u52b9\u306b\u3059\u308b\u3053\u3068\u306f\u5f53\u9762\u53ef\u80fd\u3067\u3059\u304c\u3001\u6700\u7d42\u7684\u306a\u524a\u9664\u306f2027\u5e74\u5f8c\u534a\u306b\u30a2\u30ca\u30a6\u30f3\u30b9\u3055\u308c\u308b\u898b\u8fbc\u307f\u3067\u3001\u305d\u306e\u3068\u304d\u306b\u306f\u518d\u6709\u52b9\u5316\u3068\u3044\u3046\u9003\u3052\u9053\u306f\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>\u5f71\u97ff\u3092\u53d7\u3051\u3084\u3059\u3044\u30b7\u30b9\u30c6\u30e0<\/h3>\n<p>\u57fa\u672c\u8a8d\u8a3c\u3067smtp.office365.com\u306b\u63a5\u7d9a\u3057\u3066\u3044\u308b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6a5f\u5668\u30fb\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u3059\u3079\u3066\u5bfe\u8c61\u3067\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>\u8907\u5408\u6a5f\u30fb\u30b9\u30ad\u30e3\u30ca\u30fc\uff08\u30b9\u30ad\u30e3\u30f3to\u30e1\u30fc\u30eb\uff09<\/li>\n<li>\u52e4\u6020\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u3001\u4eba\u4e8b\u30b7\u30b9\u30c6\u30e0\u306e\u81ea\u52d5\u901a\u77e5<\/li>\n<li>\u76e3\u8996\u30c4\u30fc\u30eb\u30fb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u88fd\u54c1\u306e\u30a2\u30e9\u30fc\u30c8\u30e1\u30fc\u30eb<\/li>\n<li>WordPress\u306eWP Mail SMTP\u30d7\u30e9\u30b0\u30a4\u30f3<\/li>\n<li>Access\u3084\u793e\u5185\u30b9\u30af\u30ea\u30d7\u30c8\uff08CDO.Message\u306a\u3069\uff09\u306b\u3088\u308b\u81ea\u52d5\u9001\u4fe1<\/li>\n<li>\u57fa\u5e79\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u306e\u53d7\u6ce8\u78ba\u8a8d\u30fb\u51fa\u8377\u901a\u77e5\u30e1\u30fc\u30eb<\/li>\n<\/ul>\n<\/div>\n<p>\u5384\u4ecb\u306a\u306e\u306f\u3001\u3053\u308c\u3089\u304c<strong>\u300c\u8a2d\u5b9a\u5f53\u6642\u306e\u62c5\u5f53\u8005\u304c\u4e0d\u5728\u306b\u306a\u3063\u3066\u3044\u308b\u300d\u300c\u9577\u671f\u9593\u3001\u69cb\u6210\u5909\u66f4\u306a\u304f\u7a3c\u50cd\u3057\u7d9a\u3051\u3066\u3044\u308b\u300d<\/strong>\u3068\u3044\u3046\u30b1\u30fc\u30b9\u304c\u591a\u3044\u3053\u3068\u3067\u3059\u3002\u307e\u305a\u306f\u81ea\u793e\u306e\u3069\u306e\u6a5f\u5668\u304csmtp.office365.com\u3092\u5411\u3044\u3066\u3044\u308b\u304b\u3001\u68da\u5378\u3057\u304b\u3089\u59cb\u3081\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u57fa\u672c\u8a8d\u8a3c\u304c\u6b62\u307e\u308b\u3068\u51fa\u308b\u30a8\u30e9\u30fc<\/h3>\n<p>\u57fa\u672c\u8a8d\u8a3c\u304c\u7121\u52b9\u5316\u3055\u308c\u305f\u72b6\u614b\u3067\u63a5\u7d9a\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u5fdc\u7b54\u304c\u8fd4\u308a\u307e\u3059\u3002<\/p>\n<p><code>550 5.7.30 Basic authentication is not supported for Client Submission<\/code><\/p>\n<p>\u3053\u306e\u30a8\u30e9\u30fc\u304c\u51fa\u305f\u6642\u70b9\u3067\u3001\u9001\u4fe1\u306f\u505c\u6b62\u3057\u3066\u3044\u307e\u3059\u3002\u30a8\u30e9\u30fc\u901a\u77e5\u304c\u7ba1\u7406\u8005\u306b\u5c4a\u304b\u306a\u3044\u69cb\u6210\u306b\u306a\u3063\u3066\u3044\u308b\u3068\u3001\u9867\u5ba2\u304b\u3089\u306e\u554f\u3044\u5408\u308f\u305b\u3067\u521d\u3081\u3066\u6c17\u3065\u304f\u3053\u3068\u306b\u306a\u308b\u305f\u3081\u3001\u3042\u308f\u305b\u3066\u76e3\u8996\u306e\u4ed5\u7d44\u307f\u3082\u78ba\u8a8d\u3057\u3066\u304a\u304d\u305f\u3044\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n<h3>\u79fb\u884c\u5148\u306e\u9078\u629e\u80a2\u306f3\u3064<\/h3>\n<p>Microsoft\u304c\u6848\u5185\u3057\u3066\u3044\u308b\u79fb\u884c\u5148\u3092\u3001\u5b9f\u52d9\u5224\u65ad\u306e\u57fa\u6e96\u3068\u3068\u3082\u306b\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>OAuth\uff08\u5148\u9032\u8a8d\u8a3c\uff09\u306b\u5bfe\u5fdc\u3057\u305f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3078\u5207\u308a\u66ff\u3048\u308b<\/strong>\uff1a\u5bfe\u5fdc\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u8907\u5408\u6a5f\u3067\u3042\u308c\u3070\u3001\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u5bfe\u5fdc\u3067\u304d\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u30ec\u30ac\u30b7\u30fc\u6a5f\u5668\u3084\u81ea\u793e\u958b\u767a\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u6539\u4fee\u30b3\u30b9\u30c8\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/li>\n<li><strong>High Volume Email\uff08HVE\uff09\u3092\u4f7f\u3046<\/strong>\uff1a\u793e\u5185\u5b9b\u306e\u901a\u77e5\u30e1\u30fc\u30eb\u306e\u307f\u3067\u3042\u308c\u3070\u6709\u52b9\u306a\u9078\u629e\u80a2\u3067\u3059\u3002\u305f\u3060\u3057\u5916\u90e8\u5b9b\u306b\u306f\u9001\u308c\u305a\u3001100\u4e07\u53d7\u4fe1\u8005\u3042\u305f\u308a42\u7c73\u30c9\u30eb\u306e\u5f93\u91cf\u8ab2\u91d1\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u5916\u90e8\u306eSMTP\u30ea\u30ec\u30fc\uff0f\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u3078\u5411\u304d\u5148\u3092\u5909\u3048\u308b<\/strong>\uff1a\u9001\u4fe1\u5148\u306e\u6307\u5b9a\u3092Microsoft 365\u304b\u3089\u5916\u90e8\u306e\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u306b\u5909\u66f4\u3059\u308b\u65b9\u5f0f\u3067\u3059\u3002<strong>\u30c7\u30d0\u30a4\u30b9\u5074\u306fSMTP\u306e\u8a2d\u5b9a\u5024\uff08\u30b5\u30fc\u30d0\u30fc\u540d\u30fb\u30dd\u30fc\u30c8\u30fbID\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\uff09\u3092\u66f8\u304d\u63db\u3048\u308b\u3060\u3051\u3067\u6e08\u3080<\/strong>\u305f\u3081\u3001\u6539\u4fee\u30b3\u30b9\u30c8\u3092\u6700\u5c0f\u5316\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/div>\n<p>3\u3064\u76ee\u306e\u9078\u629e\u80a2\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u6539\u4fee\u304c\u96e3\u3057\u3044\u30ec\u30ac\u30b7\u30fc\u74b0\u5883\u307b\u3069\u73fe\u5b9f\u7684\u3067\u3059\u3002<strong>\u63a5\u7d9a\u5148\u30db\u30b9\u30c8\u540d\u3092\u5909\u3048\u308b\u3060\u3051\u3067\u79fb\u884c\u304c\u5b8c\u4e86\u3059\u308b<\/strong>\u3068\u3044\u3046\u624b\u8efd\u3055\u306f\u3001\u671f\u9650\u304c\u8feb\u308b\u4e2d\u3067\u306f\u5927\u304d\u306a\u6b66\u5668\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u53c2\u8003\uff1a<a href=\"https:\/\/techcommunity.microsoft.com\/blog\/exchange\/exchange-online-to-retire-basic-auth-for-client-submission-smtp-auth\/4114750\" target=\"_blank\" rel=\"noopener\">Exchange Online to retire Basic Auth for Client Submission (SMTP AUTH)\uff08Microsoft Tech Community\uff09<\/a><\/p>\n<h2>Microsoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u306b\u304b\u304b\u308b\u9001\u4fe1\u5236\u9650<\/h2>\n<p>\u57fa\u672c\u8a8d\u8a3c\u306e\u554f\u984c\u3068\u306f\u5225\u306b\u3001\u6052\u5e38\u7684\u306b\u30e1\u30fc\u30eb\u904b\u7528\u3092\u7e1b\u308b\u306e\u304c\u9001\u4fe1\u5236\u9650\u3067\u3059\u3002\u3053\u3053\u3092\u628a\u63e1\u3057\u306a\u3044\u307e\u307e\u4e00\u6589\u914d\u4fe1\u3092\u8a66\u307f\u308b\u3068\u3001\u914d\u4fe1\u9014\u4e2d\u3067\u6b62\u307e\u308b\u3001\u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u3068\u3044\u3063\u305f\u4e8b\u6545\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30e6\u30fc\u30b6\u30fc\u5358\u4f4d\u306e\u5236\u9650<\/h3>\n<p>Microsoft\u304c\u516c\u958b\u3057\u3066\u3044\u308b\u3001Exchange Online\u306e\u30e6\u30fc\u30b6\u30fc\u3054\u3068\u306e\u5236\u9650\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002\u3053\u308c\u3089\u306f<strong>\u30b5\u30fc\u30d3\u30b9\u30ec\u30d9\u30eb\u3067\u9069\u7528\u3055\u308c\u308b\u30cf\u30fc\u30c9\u5236\u9650\u3067\u3042\u308a\u3001\u5f15\u304d\u4e0a\u3052\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093<\/strong>\u3002<\/p>\n<div class=\"su-table su-table-alternate\">\n<table>\n<thead>\n<tr>\n<th>\u5236\u9650\u306e\u7a2e\u985e<\/th>\n<th>\u4e0a\u9650\u5024<\/th>\n<th>\u88dc\u8db3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u53d7\u4fe1\u8005\u30ec\u30fc\u30c8\u5236\u9650<\/td>\n<td>10,000\u5b9b\u5148\uff0f\u65e5<\/td>\n<td>24\u6642\u9593\u306e\u30b9\u30e9\u30a4\u30c7\u30a3\u30f3\u30b0\u30a6\u30a3\u30f3\u30c9\u30a6\u3067\u5224\u5b9a<\/td>\n<\/tr>\n<tr>\n<td>\u30e1\u30c3\u30bb\u30fc\u30b8\u30ec\u30fc\u30c8\u5236\u9650<\/td>\n<td>30\u901a\uff0f\u5206<\/td>\n<td>\u8d85\u904e\u5206\u306f\u5236\u9650\u3055\u308c\u3001\u4ee5\u964d\u306e\u5206\u306b\u7e70\u308a\u8d8a\u3055\u308c\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u30e1\u30c3\u30bb\u30fc\u30b8\u3042\u305f\u308a\u306e\u53d7\u4fe1\u8005\u6570<\/td>\n<td>500\u5b9b\u5148\uff08\u65e2\u5b9a\u5024\uff09<\/td>\n<td>EAC\u307e\u305f\u306fPowerShell\u30671\u301c1,000\u306b\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u53ef\u80fd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u5177\u4f53\u7684\u306a\u6570\u5b57\u306b\u843d\u3068\u3057\u8fbc\u3080\u3068\u3001\u6df1\u523b\u3055\u304c\u898b\u3048\u3066\u304d\u307e\u3059\u3002\u305f\u3068\u3048\u3070<strong>8,000\u540d\u306e\u4f1a\u54e1\u30ea\u30b9\u30c8\u306b\u3001\u5b9b\u540d\u5dee\u3057\u8fbc\u307f\u306e\u305f\u30811\u901a1\u5b9b\u5148\u3067\u914d\u4fe1\u3059\u308b<\/strong>\u5834\u5408\u30011\u5206\u3042\u305f\u308a30\u901a\u306e\u5236\u9650\u306b\u3088\u308a\u3001\u5358\u7d14\u8a08\u7b97\u3067\u7d04267\u5206\uff084\u6642\u9593\u534a\u5f31\uff09\u304b\u304b\u308a\u307e\u3059\u3002\u914d\u4fe1\u958b\u59cb\u304b\u3089\u53d7\u4fe1\u307e\u3067\u306e\u30bf\u30a4\u30e0\u30e9\u30b0\u304c4\u6642\u9593\u4ee5\u4e0a\u3042\u308b\u30e1\u30eb\u30de\u30ac\u306f\u3001\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u544a\u77e5\u3068\u3057\u3066\u307b\u307c\u6a5f\u80fd\u3057\u307e\u305b\u3093\u3002<\/p>\n<p>\u3055\u3089\u306b\u53d7\u4fe1\u8005\u30ec\u30fc\u30c8\u5236\u9650\u306f24\u6642\u9593\u306e\u30b9\u30e9\u30a4\u30c7\u30a3\u30f3\u30b0\u30a6\u30a3\u30f3\u30c9\u30a6\u3067\u5224\u5b9a\u3055\u308c\u308b\u305f\u3081\u30011\u65e5\u76ee\u306b8,000\u5b9b\u5148\u3092\u9001\u3063\u3066\u3057\u307e\u3046\u3068\u30012\u65e5\u76ee\u306b\u306f\u6b8b\u308a2,000\u5b9b\u5148\u3057\u304b\u9001\u308c\u307e\u305b\u3093\u3002<\/p>\n<h3>\u30c6\u30ca\u30f3\u30c8\u5358\u4f4d\u306e\u5916\u90e8\u53d7\u4fe1\u8005\u30ec\u30fc\u30c8\u5236\u9650\uff08TERRL\uff09<\/h3>\n<p>\u5916\u90e8\u5b9b\u306e\u9001\u4fe1\u306b\u3064\u3044\u3066\u306f\u3001\u30c6\u30ca\u30f3\u30c8\u5358\u4f4d\u3067\u3082\u4e0a\u9650\u304c\u8a2d\u3051\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u300c\u30c6\u30ca\u30f3\u30c8\u5916\u90e8\u53d7\u4fe1\u8005\u30ec\u30fc\u30c8\u5236\u9650\uff08TERRL\uff09\u300d\u3068\u547c\u3070\u308c\u308b\u3082\u306e\u3067\u3001\u30c6\u30ca\u30f3\u30c8\u304c1\u65e5\uff0824\u6642\u9593\u306e\u30b9\u30e9\u30a4\u30c7\u30a3\u30f3\u30b0\u30a6\u30a3\u30f3\u30c9\u30a6\uff09\u306b\u9001\u4fe1\u3067\u304d\u308b\u5916\u90e8\u53d7\u4fe1\u8005\u306e\u6700\u5927\u6570\u3092\u5b9a\u3081\u305f\u5236\u9650\u3067\u3059\u3002\u4e0a\u9650\u5024\u306f\u30e9\u30a4\u30bb\u30f3\u30b9\u6570\u306b\u5fdc\u3058\u3066\u81ea\u52d5\u7684\u306b\u30b9\u30b1\u30fc\u30eb\u3057\u3001\u8a66\u7528\u7248\u30c6\u30ca\u30f3\u30c8\u306e\u65e2\u5b9a\u4e0a\u9650\u306f1\u65e5\u3042\u305f\u308a\u5916\u90e8\u53d7\u4fe1\u80055,000\u5b9b\u5148\u3067\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u5358\u4f4d\u3067\u300c\u5916\u90e8\u5b9b2,000\u5b9b\u5148\uff0f24\u6642\u9593\u300d\u3068\u3044\u3046\u5236\u9650\uff08External Recipient Rate Limit\uff09\u306e\u5c0e\u5165\u304c\u904e\u53bb\u306b\u4e88\u544a\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u304c\u3001<strong>2026\u5e741\u6708\u306bMicrosoft\u304c\u5b9f\u65bd\u306e\u4e2d\u6b62\u3092\u767a\u8868\u3057\u307e\u3057\u305f<\/strong>\u3002\u3053\u306e\u5236\u9650\u306f\u9069\u7528\u3055\u308c\u307e\u305b\u3093\u3002\u904e\u53bb\u306e\u89e3\u8aac\u8a18\u4e8b\u306b\u306f\u3053\u306e2,000\u5b9b\u5148\u5236\u9650\u3092\u524d\u63d0\u3068\u3057\u305f\u3082\u306e\u304c\u6b8b\u3063\u3066\u3044\u308b\u305f\u3081\u3001\u60c5\u5831\u306e\u9bae\u5ea6\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u9069\u7528\u3055\u308c\u308b\u306e\u306f\u3001\u3042\u304f\u307e\u3067\u524d\u8ff0\u306e\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u5358\u4f4d\u306e\u5236\u9650\uff0810,000\u5b9b\u5148\uff0f\u65e5\u300130\u901a\uff0f\u5206\uff09\u3068\u3001\u3053\u306e\u30c6\u30ca\u30f3\u30c8\u5358\u4f4d\u306eTERRL\u3067\u3059\u3002<\/p>\n<h3>\u5236\u9650\u306b\u9054\u3057\u305f\u3068\u304d\u306b\u8d77\u304d\u308b\u3053\u3068<\/h3>\n<p>\u5236\u9650\u3092\u8d85\u904e\u3059\u308b\u3068\u3001\u9001\u4fe1\u306f\u8abf\u6574\uff08\u30b9\u30ed\u30c3\u30c8\u30ea\u30f3\u30b0\uff09\u3055\u308c\u3001\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u4e00\u6642\u7684\u306b\u9001\u4fe1\u30d6\u30ed\u30c3\u30af\u3055\u308c\u307e\u3059\u3002\u5fa9\u65e7\u306b\u306f24\u6642\u9593\u306e\u5f85\u6a5f\u304c\u5fc5\u8981\u306b\u306a\u308b\u30b1\u30fc\u30b9\u3082\u3042\u308a\u3001<strong>\u300c\u4eca\u65e5\u4e2d\u306b\u9001\u3089\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u6848\u5185\u304c\u9001\u308c\u306a\u3044\u300d<\/strong>\u3068\u3044\u3046\u4e8b\u614b\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002<\/p>\n<p>\u53c2\u8003\uff1a<a href=\"https:\/\/learn.microsoft.com\/ja-jp\/defender-office-365\/outbound-spam-sending-limits-troubleshoot\" target=\"_blank\" rel=\"noopener\">Exchange Online\u3067\u306e\u9001\u4fe1\u5236\u9650\u3068\u30d6\u30ed\u30c3\u30af\u3055\u308c\u305f\u30e6\u30fc\u30b6\u30fc\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\uff08Microsoft Learn\uff09<\/a><\/p>\n<h2>Microsoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u8a2d\u5b9a\u3067\u3088\u304f\u3042\u308b\u30a8\u30e9\u30fc\u3068\u5bfe\u51e6\u6cd5<\/h2>\n<p>\u8a2d\u5b9a\u4f5c\u696d\u3067\u3064\u307e\u305a\u304d\u3084\u3059\u3044\u30a8\u30e9\u30fc\u3092\u3001\u539f\u56e0\u306e\u5207\u308a\u5206\u3051\u9806\u306b\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n<h3>535 5.7.139 Authentication unsuccessful<\/h3>\n<p>\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u3066\u3044\u308b\u30a8\u30e9\u30fc\u3067\u3059\u3002\u539f\u56e0\u306f\u5927\u304d\u304f3\u3064\u306b\u5206\u304b\u308c\u307e\u3059\u3002<\/p>\n<p>\u7b2c\u4e00\u306b\u3001<strong>SMTP AUTH\u304c\u30c6\u30ca\u30f3\u30c8\u5358\u4f4d\u307e\u305f\u306f\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u5358\u4f4d\u3067\u7121\u52b9<\/strong>\u306b\u306a\u3063\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3002\u3053\u308c\u304c\u6700\u591a\u3067\u3059\u3002\u30c6\u30ca\u30f3\u30c8\u5168\u4f53\u3067\u6709\u52b9\u3067\u3082\u3001\u500b\u5225\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u3067\u7121\u52b9\u306a\u3089\u9001\u4fe1\u3067\u304d\u307e\u305b\u3093\u3002\u4e21\u65b9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u7b2c\u4e8c\u306b\u3001<strong>\u591a\u8981\u7d20\u8a8d\u8a3c\uff08MFA\uff09\u304c\u6709\u52b9\u306a\u30a2\u30ab\u30a6\u30f3\u30c8<\/strong>\u3092\u4f7f\u3063\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3002\u57fa\u672c\u8a8d\u8a3c\u3068MFA\u306f\u4f75\u7528\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u30a2\u30d7\u30ea\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u767a\u884c\u3059\u308b\u304b\u3001OAuth\u5bfe\u5fdc\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3078\u5207\u308a\u66ff\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u7b2c\u4e09\u306b\u3001\u5358\u7d14\u306a\u30d1\u30b9\u30ef\u30fc\u30c9\u8aa4\u308a\u30fb\u6709\u52b9\u671f\u9650\u5207\u308c\u3067\u3059\u3002\u30d1\u30b9\u30ef\u30fc\u30c9\u30dd\u30ea\u30b7\u30fc\u3067\u5b9a\u671f\u5909\u66f4\u3092\u5f37\u5236\u3057\u3066\u3044\u308b\u7d44\u7e54\u3067\u306f\u3001<strong>\u6a5f\u5668\u306b\u8a2d\u5b9a\u3057\u305f\u30d1\u30b9\u30ef\u30fc\u30c9\u3060\u3051\u66f4\u65b0\u3057\u5fd8\u308c\u3066\u3001\u3042\u308b\u65e5\u7a81\u7136\u9001\u308c\u306a\u304f\u306a\u308b<\/strong>\u3068\u3044\u3046\u4e8b\u6545\u304c\u5b9a\u756a\u3067\u3059\u3002\u9001\u4fe1\u7528\u30a2\u30ab\u30a6\u30f3\u30c8\u306f\u30d1\u30b9\u30ef\u30fc\u30c9\u7121\u671f\u9650\u306b\u8a2d\u5b9a\u3059\u308b\u304b\u3001\u5909\u66f4\u6642\u306e\u66f4\u65b0\u5bfe\u8c61\u30ea\u30b9\u30c8\u306b\u6a5f\u5668\u3092\u660e\u8a18\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>550 5.7.30 Basic authentication is not supported for Client Submission<\/h3>\n<p>\u524d\u7ae0\u3067\u89e3\u8aac\u3057\u305f\u3001\u57fa\u672c\u8a8d\u8a3c\u304c\u7121\u52b9\u5316\u3055\u308c\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3067\u3059\u30022026\u5e7412\u6708\u672b\u4ee5\u964d\u306f\u3053\u306e\u30a8\u30e9\u30fc\u304c\u4e00\u6c17\u306b\u5897\u3048\u308b\u3053\u3068\u304c\u4e88\u60f3\u3055\u308c\u307e\u3059\u3002\u5bfe\u51e6\u306f\u518d\u6709\u52b9\u5316\u3067\u306f\u306a\u304f\u3001OAuth\u307e\u305f\u306f\u5916\u90e8\u30ea\u30ec\u30fc\u3078\u306e\u79fb\u884c\u3067\u8003\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u63a5\u7d9a\u3067\u304d\u306a\u3044\u30fb\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3059\u308b<\/h3>\n<p>\u30dd\u30fc\u30c8\u3068\u6697\u53f7\u5316\u8a2d\u5b9a\u3092\u6700\u521d\u306b\u7591\u3044\u307e\u3059\u3002465\u756a\u3092\u4f7f\u3063\u3066\u3044\u306a\u3044\u304b\u3001STARTTLS\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u3001TLS 1.2\u4ee5\u4e0a\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<p>\u8a2d\u5b9a\u304c\u6b63\u3057\u3044\u306e\u306b\u63a5\u7d9a\u3067\u304d\u306a\u3044\u5834\u5408\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5074\u306e\u554f\u984c\u3067\u3059\u3002\u793e\u5185\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3084\u30d7\u30ed\u30ad\u30b7\u3067587\u756a\u30dd\u30fc\u30c8\u306e\u5916\u5411\u304d\u901a\u4fe1\u304c\u585e\u304c\u308c\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3001\u3042\u308b\u3044\u306fISP\u306eOP25B\u306725\u756a\u30dd\u30fc\u30c8\u304c\u906e\u65ad\u3055\u308c\u3066\u3044\u308b\u30b1\u30fc\u30b9\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u5207\u308a\u5206\u3051\u306b\u306f\u3001\u9001\u4fe1\u5143\u306e\u7aef\u672b\u306ePowerShell\u3067 <code>Test-NetConnection smtp.office365.com -Port 587<\/code> \u3092\u5b9f\u884c\u3057\u3001\u63a5\u7d9a\u53ef\u5426\u3092\u78ba\u8a8d\u3059\u308b\u306e\u304c\u78ba\u5b9f\u3067\u3059\uff08Windows\u3067\u306ftelnet\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u65e2\u5b9a\u3067\u7121\u52b9\u306e\u305f\u3081\uff09\u3002<\/p>\n<h3>\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u308b<\/h3>\n<p>\u9001\u4fe1\u81ea\u4f53\u306f\u6210\u529f\u3057\u3066\u3044\u308b\u304c\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5165\u3089\u306a\u3044\u5834\u5408\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u7591\u3044\u307e\u3059\u3002SPF\u306bMicrosoft 365\u306einclude\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u3001DKIM\u7f72\u540d\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u3001DMARC\u30dd\u30ea\u30b7\u30fc\u304c\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u9806\u306b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u898b\u843d\u3068\u3057\u304c\u3061\u306a\u306e\u304c\u3001<strong>SPF\u306e\u30eb\u30c3\u30af\u30a2\u30c3\u30d710\u56de\u8d85\u904e<\/strong>\u3068\u3001<strong>DMARC\u306e\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u4e0d\u6574\u5408<\/strong>\u3067\u3059\u3002\u5dee\u51fa\u4eba\u30a2\u30c9\u30ec\u30b9\u306e\u30c9\u30e1\u30a4\u30f3\u3068\u3001\u5b9f\u969b\u306e\u8a8d\u8a3c\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\u3057\u3066\u3044\u306a\u3044\u3068\u3001SPF\u3068DKIM\u304cPASS\u3057\u3066\u3044\u3066\u3082DMARC\u306fFAIL\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>\u7279\u5b9a\u306e\u30ad\u30e3\u30ea\u30a2\u30fb\u30d7\u30ed\u30d0\u30a4\u30c0\u306b\u3060\u3051\u5c4a\u304b\u306a\u3044<\/h3>\n<p>Gmail\u306b\u306f\u5c4a\u304f\u306e\u306b\u30c9\u30b3\u30e2\u30fbau\u30fb\u30bd\u30d5\u30c8\u30d0\u30f3\u30af\u306e\u30ad\u30e3\u30ea\u30a2\u30e1\u30fc\u30eb\u3060\u3051\u5c4a\u304b\u306a\u3044\u3001\u3068\u3044\u3046\u76f8\u8ac7\u306f\u975e\u5e38\u306b\u591a\u304f\u5bc4\u305b\u3089\u308c\u307e\u3059\u3002\u56fd\u5185\u30ad\u30e3\u30ea\u30a2\u306f\u72ec\u81ea\u306e\u53d7\u4fe1\u5236\u9650\u3084\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u5224\u5b9a\u3092\u6301\u3064\u305f\u3081\u3001\u6c4e\u7528\u306e\u30e1\u30fc\u30eb\u57fa\u76e4\u304b\u3089\u306e\u9001\u4fe1\u3067\u306f\u3001\u30ad\u30e3\u30ea\u30a2\u3054\u3068\u306e\u6700\u9069\u5316\u304c\u884c\u304d\u5c4a\u304b\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u9818\u57df\u306f\u30c6\u30ca\u30f3\u30c8\u5074\u306e\u8a2d\u5b9a\u3067\u306f\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3067\u304d\u307e\u305b\u3093\u3002<strong>\u56fd\u5185\u30ad\u30e3\u30ea\u30a2\u3078\u306e\u914d\u4fe1\u30ed\u30b8\u30c3\u30af\u3092\u6301\u3064\u5c02\u7528\u30b5\u30fc\u30d3\u30b9\u3092\u7d4c\u7531\u3059\u308b<\/strong>\u306e\u304c\u3001\u73fe\u5b9f\u7684\u306a\u89e3\u6c7a\u7b56\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>Microsoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u304c\u9069\u3057\u3066\u3044\u306a\u3044\u30b1\u30fc\u30b9<\/h2>\n<p>\u6700\u5f8c\u306b\u3001\u5224\u65ad\u57fa\u6e96\u3092\u660e\u78ba\u306b\u3057\u3066\u304a\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u5f53\u3066\u306f\u307e\u308b\u5834\u5408\u3001Microsoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u3060\u3051\u3067\u904b\u7528\u3092\u7d9a\u3051\u308b\u306e\u306f\u5408\u7406\u7684\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h3>\u30e1\u30eb\u30de\u30ac\u30fb\u4f1a\u54e1\u5411\u3051\u4e00\u6589\u914d\u4fe1\u3092\u884c\u3046\u5834\u5408<\/h3>\n<p>\u524d\u8ff0\u306e\u901a\u308a\u3001\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u5358\u4f4d\u30671\u5206\u3042\u305f\u308a30\u901a\u30011\u65e5\u3042\u305f\u308a10,000\u5b9b\u5148\u304c\u4e0a\u9650\u3067\u3059\u3002\u5b9b\u540d\u5dee\u3057\u8fbc\u307f\u3092\u884c\u3046\u4e00\u6589\u914d\u4fe1\u3067\u306f1\u901a1\u5b9b\u5148\u3068\u306a\u308b\u305f\u3081\u3001\u6570\u5343\u4ef6\u898f\u6a21\u306b\u306a\u308b\u3068\u914d\u4fe1\u5b8c\u4e86\u307e\u3067\u6570\u6642\u9593\u3092\u8981\u3057\u3001\u544a\u77e5\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u306b\u9593\u306b\u5408\u3044\u307e\u305b\u3093\u3002\u52a0\u3048\u3066\u3001Exchange Online\u306f\u3082\u3068\u3082\u3068\u30d0\u30eb\u30af\u30e1\u30fc\u30eb\u3092\u60f3\u5b9a\u3057\u305f\u8a2d\u8a08\u3067\u306f\u306a\u304f\u3001\u7121\u7406\u306b\u5927\u91cf\u9001\u4fe1\u3092\u884c\u3046\u3068\u30c6\u30ca\u30f3\u30c8\u5168\u4f53\u306e\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u4f4e\u4e0b\u3092\u62db\u304f\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u5230\u9054\u7387\u3084\u914d\u4fe1\u7d50\u679c\u3092\u53ef\u8996\u5316\u3057\u305f\u3044\u5834\u5408<\/h3>\n<p>Microsoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u306b\u306f\u3001\u914d\u4fe1\u7d50\u679c\u3092\u5206\u6790\u3059\u308b\u6a5f\u80fd\u304c\u307b\u3068\u3093\u3069\u3042\u308a\u307e\u305b\u3093\u3002\u3069\u306e\u30a2\u30c9\u30ec\u30b9\u3067\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u306e\u304b\u3001\u30d0\u30a6\u30f3\u30b9\u306e\u7406\u7531\u306f\u4f55\u304b\u3068\u3044\u3063\u305f\u60c5\u5831\u3092\u4f53\u7cfb\u7684\u306b\u53d6\u5f97\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u30ea\u30b9\u30c8\u54c1\u8cea\u306e\u6539\u5584\u30b5\u30a4\u30af\u30eb\u3092\u56de\u305b\u307e\u305b\u3093\u3002<\/p>\n<h3>\u30d0\u30a6\u30f3\u30b9\uff08\u30a8\u30e9\u30fc\u30e1\u30fc\u30eb\uff09\u7ba1\u7406\u3092\u81ea\u52d5\u5316\u3057\u305f\u3044\u5834\u5408<\/h3>\n<p>\u9000\u4f1a\u30fb\u5ec3\u6b62\u3055\u308c\u305f\u30a2\u30c9\u30ec\u30b9\u3078\u306e\u9001\u4fe1\u3092\u653e\u7f6e\u3059\u308b\u3068\u3001\u9001\u4fe1\u8005\u3068\u3057\u3066\u306e\u8a55\u4fa1\u304c\u4e0b\u304c\u308a\u3001\u6b63\u5e38\u306a\u30a2\u30c9\u30ec\u30b9\u3078\u306e\u5230\u9054\u7387\u307e\u3067\u5dfb\u304d\u6dfb\u3048\u3067\u4f4e\u4e0b\u3057\u307e\u3059\u3002Microsoft 365\u3067\u306f\u30d0\u30a6\u30f3\u30b9\u306e\u81ea\u52d5\u51e6\u7406\u30fb\u81ea\u52d5\u9664\u5916\u306e\u4ed5\u7d44\u307f\u304c\u306a\u304f\u3001\u62c5\u5f53\u8005\u304c\u624b\u4f5c\u696d\u3067\u30ea\u30b9\u30c8\u3092\u6574\u5099\u3057\u7d9a\u3051\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30b7\u30b9\u30c6\u30e0\u6539\u4fee\u305b\u305a\u306b\u57fa\u672c\u8a8d\u8a3c\u306e\u5ec3\u6b62\u306b\u5bfe\u5fdc\u3057\u305f\u3044\u5834\u5408<\/h3>\n<p>OAuth\u5bfe\u5fdc\u306b\u306f\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u66f4\u65b0\u3084\u30d7\u30ed\u30b0\u30e9\u30e0\u6539\u4fee\u304c\u4f34\u3044\u307e\u3059\u3002\u5bfe\u5fdc\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u306a\u3044\u6a5f\u5668\u3001\u30d9\u30f3\u30c0\u30fc\u30b5\u30dd\u30fc\u30c8\u304c\u7d42\u4e86\u3057\u305f\u30b7\u30b9\u30c6\u30e0\u3092\u62b1\u3048\u3066\u3044\u308b\u5834\u5408\u3001<strong>\u9001\u4fe1\u5148\u30db\u30b9\u30c8\u3092\u5dee\u3057\u66ff\u3048\u308b\u3060\u3051\u3067\u6e08\u3080\u5916\u90e8\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9<\/strong>\u304c\u6700\u77ed\u30eb\u30fc\u30c8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>Microsoft 365\u306eSMTP\u904b\u7528\u3092\u5b89\u5b9a\u3055\u305b\u308b\u306a\u3089\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u6d3b\u7528\u3059\u308b<\/h2>\n<p>Microsoft 365\u306f\u793e\u5185\u306e\u696d\u52d9\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u57fa\u76e4\u3068\u3057\u3066\u306f\u512a\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u5916\u90e8\u5b9b\u306e\u5927\u91cf\u9001\u4fe1\u3084\u3001\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u306e\u78ba\u5b9f\u306a\u81ea\u52d5\u9001\u4fe1\u306f\u8a2d\u8a08\u601d\u60f3\u306e\u7bc4\u56f2\u5916\u3067\u3059\u3002Microsoft\u81ea\u8eab\u304c\u5916\u90e8\u5b9b\u306e\u5927\u91cf\u9001\u4fe1\u306b\u3064\u3044\u3066\u5225\u30b5\u30fc\u30d3\u30b9\u306e\u5229\u7528\u3092\u6848\u5185\u3057\u3066\u3044\u308b\u4e8b\u5b9f\u304c\u3001\u305d\u308c\u3092\u7aef\u7684\u306b\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u3053\u3092\u88dc\u3046\u306e\u304c\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\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>Microsoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u3067\u767a\u751f\u3057\u3066\u3044\u305f\u5236\u7d04\u306f\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u7d4c\u7531\u3059\u308b\u3053\u3068\u3067\u305d\u306e\u307e\u307e\u89e3\u6d88\u3067\u304d\u307e\u3059\u3002\u9001\u4fe1\u7d4c\u8def\u3092\u5206\u96e2\u3059\u308b\u3053\u3068\u3067\u3001\u696d\u52d9\u30e1\u30fc\u30eb\u3068\u81ea\u52d5\u9001\u4fe1\u30e1\u30fc\u30eb\u304c\u4e92\u3044\u306b\u5f71\u97ff\u3057\u5408\u3046\u4e8b\u614b\u3082\u9632\u3052\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>\u9001\u4fe1\u901a\u6570\u30fb\u9001\u4fe1\u901f\u5ea6\u306e\u4e0a\u9650\u306b\u7e1b\u3089\u308c\u305a\u3001\u6570\u5343\u301c\u6570\u767e\u4e07\u901a\u898f\u6a21\u306e\u914d\u4fe1\u306b\u5bfe\u5fdc\u3067\u304d\u308b<\/li>\n<li>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\uff08SPF\uff0fDKIM\uff0fDMARC\uff09\u306b\u6a19\u6e96\u5bfe\u5fdc\u3057\u3001\u4e3b\u8981\u30d7\u30ed\u30d0\u30a4\u30c0\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3092\u6e80\u305f\u305b\u308b<\/li>\n<li>\u30d0\u30a6\u30f3\u30b9\u30e1\u30fc\u30eb\u304c\u81ea\u52d5\u51e6\u7406\u3055\u308c\u3001\u30ea\u30b9\u30c8\u54c1\u8cea\u306e\u7dad\u6301\u306b\u304b\u304b\u308b\u5de5\u6570\u304c\u4e0d\u8981\u306b\u306a\u308b<\/li>\n<li>\u914d\u4fe1\u30ed\u30b0\u3067\u9001\u4fe1\u7d50\u679c\u3092\u8ffd\u8de1\u3067\u304d\u3001\u5c4a\u304b\u306a\u304b\u3063\u305f\u539f\u56e0\u3092\u7279\u5b9a\u3067\u304d\u308b<\/li>\n<li>\u57fa\u5e79\u30b7\u30b9\u30c6\u30e0\u5074\u306fSMTP\u306e\u63a5\u7d9a\u5148\u3092\u5909\u66f4\u3059\u308b\u3060\u3051\u3067\u79fb\u884c\u3067\u304d\u3001\u6539\u4fee\u30b3\u30b9\u30c8\u3092\u6291\u3048\u3089\u308c\u308b<\/li>\n<\/ul>\n<\/div>\n<p>\u3068\u304f\u306b2026\u5e7412\u6708\u306e\u57fa\u672c\u8a8d\u8a3c\u65e2\u5b9a\u30aa\u30d5\u3092\u63a7\u3048\u305f\u4eca\u3001<strong>\u300c\u63a5\u7d9a\u5148\u3092\u5909\u3048\u308b\u3060\u3051\u3067\u79fb\u884c\u3067\u304d\u308b\u300d<\/strong>\u3068\u3044\u3046\u70b9\u306f\u7121\u8996\u3067\u304d\u306a\u3044\u4fa1\u5024\u3092\u6301\u3061\u307e\u3059\u3002\u671f\u9650\u307e\u3067\u306b\u5168\u6a5f\u5668\u306eOAuth\u5bfe\u5fdc\u3092\u5b8c\u4e86\u3055\u305b\u308b\u3088\u308a\u3001\u306f\u308b\u304b\u306b\u73fe\u5b9f\u7684\u306a\u9078\u629e\u80a2\u3067\u3059\u3002<\/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\u3059\u308b\u3053\u3068\u3067\u3001\u901a\u77e5\u30e1\u30fc\u30eb\u3084\u4e00\u6589\u914d\u4fe1\u3092\u7c21\u5358\u306b\u5b9f\u73fe\u3067\u304d\u308b\u56fd\u7523\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002\u8907\u5408\u6a5f\u3084\u57fa\u5e79\u30b7\u30b9\u30c6\u30e0\u306e\u9001\u4fe1\u5148\u3092smtp.office365.com\u304b\u3089blastengine\u306b\u5909\u66f4\u3059\u308b\u3060\u3051\u3067\u79fb\u884c\u3067\u304d\u308b\u305f\u3081\u3001Microsoft 365\u306e\u9001\u4fe1\u5236\u9650\u3084\u57fa\u672c\u8a8d\u8a3c\u306e\u5ec3\u6b62\u306b\u5bfe\u3059\u308b\u56de\u907f\u7b56\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>SMTP\u30ea\u30ec\u30fc\u30fbAPI\u9023\u643a<\/strong>\uff1a\u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\u3078\u306e\u7d44\u307f\u8fbc\u307f\u304c\u5bb9\u6613\u3067\u3001\u63a5\u7d9a\u5148\u306e\u8a2d\u5b9a\u5909\u66f4\u306e\u307f\u3067\u6700\u77ed\u5f53\u65e5\u304b\u3089\u5229\u7528\u958b\u59cb\u3067\u304d\u308b<\/li>\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\u306b\u3088\u308a\u3001\u30c9\u30b3\u30e2\u30fbau\u30fb\u30bd\u30d5\u30c8\u30d0\u30f3\u30af\u5b9b\u306b\u3082\u78ba\u5b9f\u306b\u5c4a\u3051\u308b<\/li>\n<li><strong>SPF\uff0fDKIM\uff0fDMARC\u5bfe\u5fdc<\/strong>\uff1a\u6700\u65b0\u306e\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306b\u6a19\u6e96\u5bfe\u5fdc\u3057\u3001\u306a\u308a\u3059\u307e\u3057\u5224\u5b9a\u30fb\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u3092\u56de\u907f<\/li>\n<li><strong>\u30d0\u30a6\u30f3\u30b9\u30e1\u30fc\u30eb\u81ea\u52d5\u5bfe\u5fdc<\/strong>\uff1a\u30a8\u30e9\u30fc\u30a2\u30c9\u30ec\u30b9\u306e\u51e6\u7406\u3092\u81ea\u52d5\u5316\u3057\u3001\u30ea\u30b9\u30c8\u7ba1\u7406\u306e\u904b\u7528\u8ca0\u8377\u3092\u5927\u5e45\u306b\u524a\u6e1b<\/li>\n<li><strong>IP\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u7ba1\u7406<\/strong>\uff1a\u30b5\u30fc\u30d0\u30fc\u306e\u904b\u7528\u30fb\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306fblastengine\u5074\u3067\u884c\u3046\u305f\u3081\u3001\u5e38\u306b\u9ad8\u3044\u9001\u4fe1\u8005\u8a55\u4fa1\u3092\u7dad\u6301\u3067\u304d\u308b<\/li>\n<li><strong>\u914d\u4fe1\u30ed\u30b0\u7ba1\u7406<\/strong>\uff1a\u8a73\u7d30\u306a\u914d\u4fe1\u30b9\u30c6\u30fc\u30bf\u30b9\u3092\u78ba\u8a8d\u3067\u304d\u3001\u5c4a\u304b\u306a\u304b\u3063\u305f\u539f\u56e0\u306e\u5207\u308a\u5206\u3051\u304c\u30b9\u30e0\u30fc\u30ba<\/li>\n<\/ul>\n<\/div>\n<p>\u914d\u4fe1\u901f\u5ea6\u306f1,500\u4e07\u901a\uff0f\u6642\u3002\u521d\u671f\u8cbb\u7528\u306f\u7121\u6599\u3067\u3001\u6708\u984d3,000\u5186\u304b\u3089\u5229\u7528\u3067\u304d\u307e\u3059\u3002\u65e5\u672c\u8a9e\u3067\u306e\u30c6\u30af\u30cb\u30ab\u30eb\u30b5\u30dd\u30fc\u30c8\uff08\u96fb\u8a71\u30fb\u30e1\u30fc\u30eb\uff09\u306b\u3082\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u79fb\u884c\u4f5c\u696d\u306b\u4e0d\u5b89\u304c\u3042\u308b\u5834\u5408\u3082\u76f8\u8ac7\u3057\u306a\u304c\u3089\u9032\u3081\u3089\u308c\u307e\u3059\u3002\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u5165\u529b\u306e\u307f\u3067\u7121\u6599\u30c8\u30e9\u30a4\u30a2\u30eb\u304c\u53ef\u80fd\u3067\u3059\u306e\u3067\u3001\u307e\u305a\u306f\u6c17\u8efd\u306b\u304a\u8a66\u3057\u304f\u3060\u3055\u3044\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\uff1ahttps:\/\/blastengine.jp\/<\/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>\u30b7\u30b9\u30c6\u30e0\u9023\u643a\u3067\u306f\u306a\u304f\u3001\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u62c5\u5f53\u8005\u304c\u7ba1\u7406\u753b\u9762\u304b\u3089\u30e1\u30eb\u30de\u30ac\u3084\u4f1a\u54e1\u5411\u3051\u306e\u304a\u77e5\u3089\u305b\u3092\u914d\u4fe1\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\uff08blastmail\uff09\u304c\u9069\u3057\u3066\u3044\u307e\u3059\u300215\u5e74\u9023\u7d9a\u3067\u5c0e\u5165\u793e\u6570\u30b7\u30a7\u30a2No.1\u3092\u7372\u5f97\u3057\u3066\u304a\u308a\u3001\u5c0e\u5165\u5b9f\u7e3e\u306f27,000\u793e\u4ee5\u4e0a\u3002\u5c02\u9580\u77e5\u8b58\u304c\u306a\u304f\u3066\u3082\u76f4\u611f\u7684\u306b\u64cd\u4f5c\u3067\u304d\u308b\u30b7\u30f3\u30d7\u30eb\u306a\u7ba1\u7406\u753b\u9762\u304c\u7279\u5fb4\u3067\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>HTML\u30e1\u30fc\u30eb\u4f5c\u6210<\/strong>\uff1a\u30ce\u30fc\u30b3\u30fc\u30c9\u30a8\u30c7\u30a3\u30bf\u3067\u3001\u30c7\u30b6\u30a4\u30f3\u6027\u306e\u9ad8\u3044\u30e1\u30fc\u30eb\u3092\u4f5c\u6210\u3067\u304d\u308b<\/li>\n<li><strong>\u52b9\u679c\u6e2c\u5b9a<\/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\u6b21\u306e\u65bd\u7b56\u306b\u3059\u3050\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\u3067\u30b0\u30eb\u30fc\u30d7\u3092\u4f5c\u6210\u3057\u3001\u5bfe\u8c61\u3092\u7d5e\u3063\u3066\u914d\u4fe1\u3067\u304d\u308b<\/li>\n<li><strong>Gmail\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u5bfe\u5fdc<\/strong>\uff1aSPF\uff0fDKIM\u306a\u3069\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u5bfe\u7b56\u306b\u6a19\u6e96\u5bfe\u5fdc<\/li>\n<li><strong>\u767b\u9332\u89e3\u9664\u30d5\u30a9\u30fc\u30e0\u4f5c\u6210<\/strong>\uff1a\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u3067\u306e\u914d\u4fe1\u505c\u6b62\u306b\u5bfe\u5fdc\u3057\u3001\u6cd5\u4ee4\u30fb\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u8981\u4ef6\u3092\u6e80\u305f\u305b\u308b<\/li>\n<\/ul>\n<\/div>\n<p>\u6708\u984d4,000\u5186\u304b\u3089\u306e\u30d7\u30e9\u30f3\u304c\u7528\u610f\u3055\u308c\u3066\u304a\u308a\u3001\u767b\u9332\u30a2\u30c9\u30ec\u30b9\u6570\u306b\u5fdc\u3058\u305f\u30d7\u30e9\u30f3\u5236\u306e\u305f\u3081\u3001\u914d\u4fe1\u901a\u6570\u306b\u5fdc\u3058\u305f\u8ffd\u52a0\u8ab2\u91d1\u306f\u767a\u751f\u3057\u307e\u305b\u3093\u3002Microsoft 365\u3067\u306f\u73fe\u5b9f\u7684\u306b\u4e0d\u53ef\u80fd\u3060\u3063\u305f\u6570\u5343\u4ef6\u898f\u6a21\u306e\u4e00\u6589\u914d\u4fe1\u3092\u3001\u7ba1\u7406\u753b\u9762\u304b\u3089\u6570\u30af\u30ea\u30c3\u30af\u3067\u5b9f\u884c\u3067\u304d\u307e\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\/\" target=\"_blank\" rel=\"noopener\">\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<h2>FAQ<\/h2>\n<div class=\"blog-faq\"><h2 class=\"blog-faq__title\">FAQ<\/h2><dl class=\"blog-faq__list\">\n<dt class=\"blog-faq__question\">Microsoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u540d\u3068\u30dd\u30fc\u30c8\u756a\u53f7\u306f\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u30b5\u30fc\u30d0\u30fc\u540d\u306f<strong>smtp.office365.com<\/strong>\u3001\u30dd\u30fc\u30c8\u756a\u53f7\u306f<strong>587\uff08STARTTLS\uff09<\/strong>\u3067\u3059\u3002\u30dd\u30fc\u30c825\u3082\u4ed5\u69d8\u4e0a\u306f\u5229\u7528\u3067\u304d\u307e\u3059\u304c\u3001ISP\u3084\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3067\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u305f\u3081587\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u306a\u304a\u3001\u30dd\u30fc\u30c8465\u306fMicrosoft 365\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8SMTP\u9001\u4fe1\u3067\u306f\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/dd>\n<dt class=\"blog-faq__question\">\u8a2d\u5b9a\u5024\u3092\u5165\u308c\u305f\u306e\u306b\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u3067\u304d\u307e\u305b\u3093\u3002\u4f55\u3092\u78ba\u8a8d\u3059\u3079\u304d\u3067\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u307e\u305a<strong>SMTP AUTH\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u304b<\/strong>\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u30022020\u5e741\u6708\u4ee5\u964d\u306b\u4f5c\u6210\u3055\u308c\u305f\u30c6\u30ca\u30f3\u30c8\u3067\u306f\u65e2\u5b9a\u3067\u7121\u52b9\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u30c6\u30ca\u30f3\u30c8\u5168\u4f53\u3068\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u5358\u4f4d\u306e\u4e21\u65b9\u3067\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u6b21\u306b\u30dd\u30fc\u30c8587\u3068STARTTLS\u3001TLS 1.2\u4ee5\u4e0a\u3078\u306e\u5bfe\u5fdc\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3067\u306e587\u756a\u30dd\u30fc\u30c8\u958b\u653e\u3092\u9806\u306b\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/dd>\n<dt class=\"blog-faq__question\">2026\u5e7412\u6708\u306b\u57fa\u672c\u8a8d\u8a3c\u304c\u4f7f\u3048\u306a\u304f\u306a\u308b\u3068\u805e\u304d\u307e\u3057\u305f\u3002\u4f55\u3092\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a2026\u5e7412\u6708\u672b\u306b\u65e2\u5b58\u30c6\u30ca\u30f3\u30c8\u3067\u57fa\u672c\u8a8d\u8a3c\u304c<strong>\u65e2\u5b9a\u3067\u7121\u52b9\u5316<\/strong>\u3055\u308c\u307e\u3059\u3002\u7ba1\u7406\u8005\u304c\u660e\u793a\u7684\u306b\u6709\u52b9\u5316\u3059\u308c\u3070\u5f53\u9762\u306f\u7d99\u7d9a\u5229\u7528\u3067\u304d\u307e\u3059\u304c\u30012027\u5e74\u5f8c\u534a\u306b\u6700\u7d42\u7684\u306a\u524a\u9664\u65e5\u304c\u30a2\u30ca\u30a6\u30f3\u30b9\u3055\u308c\u308b\u4e88\u5b9a\u3067\u3059\u3002\u307e\u305a\u306fsmtp.office365.com\u3092\u9001\u4fe1\u5148\u306b\u6307\u5b9a\u3057\u3066\u3044\u308b\u6a5f\u5668\u30fb\u30b7\u30b9\u30c6\u30e0\u3092\u68da\u5378\u3057\u3057\u3001OAuth\u5bfe\u5fdc\u3078\u306e\u6539\u4fee\u304b\u5916\u90e8\u306eSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u3078\u306e\u5207\u308a\u66ff\u3048\u3092\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/dd>\n<dt class=\"blog-faq__question\">Microsoft 365\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u3067\u30e1\u30eb\u30de\u30ac\u306e\u4e00\u6589\u914d\u4fe1\u306f\u3067\u304d\u307e\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u73fe\u5b9f\u7684\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u5358\u4f4d\u3067<strong>1\u5206\u3042\u305f\u308a30\u901a\u30011\u65e5\u3042\u305f\u308a10,000\u5b9b\u5148<\/strong>\u3068\u3044\u3046\u4e0a\u9650\u304c\u3042\u308a\u3001\u5b9b\u540d\u5dee\u3057\u8fbc\u307f\u3092\u884c\u3046\u914d\u4fe1\u3067\u306f1\u901a1\u5b9b\u5148\u3068\u306a\u308b\u305f\u3081\u3001\u6570\u5343\u4ef6\u898f\u6a21\u3067\u306f\u914d\u4fe1\u5b8c\u4e86\u307e\u3067\u6570\u6642\u9593\u304b\u304b\u308a\u307e\u3059\u3002\u30c6\u30ca\u30f3\u30c8\u5358\u4f4d\u3067\u3082\u5916\u90e8\u5b9b\u306e\u4e0a\u9650\uff08TERRL\uff09\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4e00\u6589\u914d\u4fe1\u306b\u306f\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306e\u5229\u7528\u304c\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/dd>\n<dt class=\"blog-faq__question\">High Volume 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