{"id":10115,"date":"2022-09-01T17:27:51","date_gmt":"2022-09-01T08:27:51","guid":{"rendered":"https:\/\/blastmail.jp\/blog\/?p=10115"},"modified":"2026-02-18T10:31:53","modified_gmt":"2026-02-18T01:31:53","slug":"dkim","status":"publish","type":"post","link":"https:\/\/blastmail.jp\/blog\/mail-delivery\/dkim","title":{"rendered":"\u3010\u56f3\u89e3\u3011DKIM\uff08\u30c7\u30a3\u30fc\u30ad\u30e0\uff09\u3068\u306f\uff1f\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u4ed5\u7d44\u307f\u3068SPF\u30fbDMARC\u3068\u306e\u9055\u3044\u3092\u89e3\u8aac"},"content":{"rendered":"<p><img decoding=\"async\" class=\"alignnone size-full wp-image-10117\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2022\/09\/dkim1.jpg\" alt=\"\" width=\"1200\" height=\"630\" 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href=\"https:\/\/news.goo.ne.jp\/article\/tuf\/region\/tuf-94154.html\">\u88ab\u5bb3\u984d\u306f1\u51045000\u4e07\u5186\u3067\u53bb\u5e74\u306e\u500d \u4eca\u5e741\u6708\u301c6\u6708\u306e\u306a\u308a\u3059\u307e\u3057\u8a50\u6b3a\uff08\u798f\u5cf6\u770c\uff09<\/a>\uff09\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u300c\u30e1\u30fc\u30eb\u306e\u5230\u9054\u7387\u3092\u4e0a\u3052\u308b\u306b\u306fDKIM\u306e\u8a2d\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u300d \u305d\u3046\u8a00\u308f\u308c\u3066\u3082\u3001SPF\u3084DMARC\u306a\u3069\u4f3c\u305f\u3088\u3046\u306a\u7528\u8a9e\u304c\u591a\u304f\u3001\u5177\u4f53\u7684\u306b\u4f55\u3092\u3059\u308c\u3070\u3044\u3044\u306e\u304b\u6df7\u4e71\u3057\u3066\u3044\u308b\u65b9\u3082\u591a\u3044\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>DKIM\uff08DomainKeys Identified Mail\uff09\u3092\u4e00\u8a00\u3067\u8868\u3059\u3068\u3001<span style=\"color: #ff0000;\"><strong>\u30e1\u30fc\u30eb\u306b\u304a\u3051\u308b\u300c\u96fb\u5b50\u7684\u306a\u30cf\u30f3\u30b3\uff08\u7f72\u540d\uff09\u300d<\/strong><\/span>\u306e\u3053\u3068\u3067\u3059\u3002\u3053\u308c\u304c\u3042\u308b\u3053\u3068\u3067\u3001\u53d7\u4fe1\u5074\u306f\u300c\u3053\u306e\u30e1\u30fc\u30eb\u306f\u9593\u9055\u3044\u306a\u304f\u3042\u306e\u4eba\u304b\u3089\u9001\u3089\u308c\u305f\u3082\u306e\u3067\u3001\u9014\u4e2d\u3067\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u300d\u3068\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u7279\u306b2024\u5e74\u306eGmail\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u5909\u66f4\u4ee5\u964d\u3001DKIM\u306f\u5358\u306a\u308b\u63a8\u5968\u8a2d\u5b9a\u3067\u306f\u306a\u304f\u3001\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u3092\u78ba\u5b9f\u306b\u5c4a\u3051\u308b\u305f\u3081\u306e\u300c\u5fc5\u9808\u6761\u4ef6\u300d\u306b\u306a\u308a\u3064\u3064\u3042\u308a\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001DKIM\u306e\u57fa\u672c\u7684\u306a\u4ed5\u7d44\u307f\u304b\u3089\u3001SPF\u3068\u306e\u6c7a\u5b9a\u7684\u306a\u9055\u3044\u3001\u305d\u3057\u3066\u5c0e\u5165\u3059\u308b\u4e0a\u3067\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u300c\u4f5c\u6210\u8005\u7f72\u540d\u300d\u3068\u300c\u7b2c\u4e09\u8005\u7f72\u540d\u300d\u306e\u91cd\u8981\u6027\u306b\u3064\u3044\u3066\u3001\u5c02\u9580\u7528\u8a9e\u3092\u3067\u304d\u308b\u3060\u3051\u4f7f\u308f\u305a\u306b\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/blastmail.jp\/\"><img decoding=\"async\" class=\"alignnone wp-image-14233 size-full\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2023\/11\/gmail\u8981\u4ef6\u5f37\u5316_\u30d0\u30ca\u30fc_1360x350-2.png\" alt=\"\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u306e\u30d0\u30ca\u30fc\" width=\"1360\" height=\"350\" \/><\/a><\/p>\n<h2>DKIM\u3068\u306f<\/h2>\n<p>\u300cDKIM\u300d\u3068\u306f\u300cDomain Keys Identified 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decoding=\"async\" class=\"alignnone size-full wp-image-10119\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2022\/09\/dkim3.jpg\" alt=\"\" width=\"1200\" height=\"630\" \/><\/p>\n<p>\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u69cb\u6210\u306f\u4e0a\u56f3\u306e\u3088\u3046\u306b\u306a\u3063\u3066\u304a\u308a\u3001\u9001\u4fe1\u8a8d\u8a3c\u30c9\u30e1\u30a4\u30f3\u6280\u8853\u306f\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u691c\u8a3c\u3057\u4e0d\u6b63\u30e1\u30fc\u30eb\u3092\u5272\u308a\u51fa\u3059\u4ed5\u7d44\u307f\u3067\u3059\u3002\u306a\u304a\u3001\u8907\u6570\u4eba\u306e\u65b9\u304c\u540c\u6642\u306b\u5229\u7528\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u306f\u300c\u5171\u901a\u30c9\u30e1\u30a4\u30f3\u300d\u3068\u547c\u3070\u308c\u3066\u304a\u308a\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>google.com<\/li>\n<li>onmicrosoft.com<\/li>\n<li>yahoo.co.jp<\/li>\n<li>ezweb.ne.jp<\/li>\n<li>docomo.ne.jp<\/li>\n<\/ul>\n<\/div>\n<p>\u4f01\u696d\u306a\u3069\u3067\u306f\u30c9\u30e1\u30a4\u30f3\u90e8\u5206\u306b\u81ea\u793e\u540d\u3092\u5165\u308c\u308b\u306a\u3069\u3057\u3066\u3001\u30aa\u30ea\u30b8\u30ca\u30eb\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u4f5c\u6210\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u308c\u3089\u306f\u4e0a\u8a18\u306e\u30c9\u30e1\u30a4\u30f3\u3068\u306f\u9055\u3044<strong>\u300c\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u300d<\/strong>\u3068\u547c\u3070\u308c\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-10120\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2022\/09\/dkim4.png\" alt=\"\" width=\"1200\" height=\"630\" \/><\/p>\n<p>\u4e0a\u8a18\u306e\u56f3\u3067\u306f\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u304c\u300c\u53d7\u4fe1\u8005\u300d\u306b\u5bfe\u3057\u3066\u81ea\u8eab\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u300cbbb.com\u300d\u3092\u300caaa.com\u300d\u306b\u8a50\u79f0\u3057\u3066\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u3088\u3046\u306a\u30b1\u30fc\u30b9\u306b\u304a\u3044\u3066\u3001<strong>\u9001\u4fe1\u3055\u308c\u3066\u304d\u305f\u30e1\u30fc\u30eb\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u304c\u8a50\u79f0\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u306a\u3069<\/strong>\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u4ed5\u7d44\u307f\u304c\u3001DKIM\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3067\u3059\u3002<\/p>\n<h2>SPF\u30fbDKIM\u30fbDMARC\u306e\u5f79\u5272\u306e\u9055\u3044\u3092\u300c\u90f5\u4fbf\u300d\u3067\u4f8b\u3048\u308b\u3068\uff1f<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2022\/09\/spf-dkim-dmarc.jpg\" alt=\"spf-dkim-dmarc\u306e\u89e3\u8aac\u753b\u50cf\" width=\"1024\" height=\"559\" class=\"alignnone size-full wp-image-20548\" \/><\/p>\n<p>\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u8a71\u306b\u306a\u308b\u3068SPF\u3084DKIM\u3055\u3089\u306bDMARC\u3068\u3044\u3063\u305f\u7528\u8a9e\u304c\u98db\u3073\u4ea4\u3044\u6df7\u4e71\u3057\u304c\u3061\u3067\u3059\u304c\u3001\u3053\u308c\u3089\u306f\u7af6\u5408\u3059\u308b\u6280\u8853\u3067\u306f\u306a\u304f\u76f8\u4e92\u306b\u88dc\u5b8c\u3057\u5408\u3046\u95a2\u4fc2\u306b\u3042\u308a\u307e\u3059\u30023\u3064\u306e\u6280\u8853\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u521d\u3081\u3066\u5f37\u56fa\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u304c\u5b8c\u6210\u3057\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u5f79\u5272\u3092\u73fe\u5b9f\u4e16\u754c\u306e\u300c\u90f5\u4fbf\u300d\u3084\u300c\u624b\u7d19\u300d\u306b\u4f8b\u3048\u3066\u6574\u7406\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>SPF\uff1d\u300c\u4f4f\u6240\u306e\u78ba\u8a8d\u300d<\/h3>\n<p>SPF\u306f\u90f5\u4fbf\u306b\u304a\u3051\u308b\u300c\u5dee\u51fa\u4eba\u306e\u4f4f\u6240\u78ba\u8a8d\u300d\u306e\u3088\u3046\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u5c4a\u3044\u305f\u624b\u7d19\u306e\u5c01\u7b52\u306b\u66f8\u304b\u308c\u3066\u3044\u308b\u5dee\u51fa\u4eba\u306e\u4f4f\u6240\uff08IP\u30a2\u30c9\u30ec\u30b9\uff09\u304c\u3001\u3042\u3089\u304b\u3058\u3081\u767b\u9332\u3055\u308c\u305f\u6b63\u3057\u3044\u4f4f\u6240\u30ea\u30b9\u30c8\uff08DNS\u30ec\u30b3\u30fc\u30c9\uff09\u3068\u4e00\u81f4\u3059\u308b\u304b\u3092\u7167\u5408\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306b\u3088\u308a\u7121\u95a2\u4fc2\u306a\u5834\u6240\u304b\u3089\u9001\u3089\u308c\u3066\u304d\u305f\u602a\u3057\u3044\u624b\u7d19\u3092\u691c\u77e5\u3067\u304d\u307e\u3059\u304c\u3001\u4f4f\u6240\u81ea\u4f53\u3092\u507d\u88c5\u3055\u308c\u308b\u3068\u898b\u629c\u3051\u306a\u3044\u3068\u3044\u3046\u5f31\u70b9\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>DKIM\uff1d\u300c\u5c01\u5370\u306e\u5370\u9451\u300d<\/h3>\n<p>DKIM\u306f\u624b\u7d19\u306e\u5c01\u7b52\u306b\u62bc\u3055\u308c\u305f\u300c\u5c01\u874b\u300d\u3084\u300c\u5272\u5370\u300d\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002\u624b\u7d19\u306e\u5dee\u51fa\u4eba\u304c\u78ba\u5b9f\u306b\u672c\u4eba\u3067\u3042\u308b\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b\u96fb\u5b50\u7f72\u540d\uff08\u30cf\u30f3\u30b3\uff09\u3092\u62bc\u3057\u3001\u3055\u3089\u306b\u914d\u9001\u9014\u4e2d\u3067\u5c01\u304c\u958b\u3051\u3089\u308c\u305f\u308a\u4e2d\u8eab\u304c\u66f8\u304d\u63db\u3048\u3089\u308c\u305f\u308a\u3057\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/p>\n<p>\u4f4f\u6240\uff08SPF\uff09\u3060\u3051\u3067\u306f\u9632\u3052\u306a\u3044\u6539\u3056\u3093\u30ea\u30b9\u30af\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u304c\u3001\u3053\u308c\u5358\u4f53\u3067\u306f\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u3069\u3046\u6271\u3046\u3079\u304d\u304b\u307e\u3067\u306f\u53d7\u4fe1\u5074\u306b\u6307\u793a\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<h3>DMARC\uff1d\u300c\u53d6\u308a\u6271\u3044\u8aac\u660e\u66f8\u300d<\/h3>\n<p>DMARC\u306f\u3082\u3057\u4f4f\u6240\u78ba\u8a8d\uff08SPF\uff09\u3084\u5c01\u5370\u78ba\u8a8d\uff08DKIM\uff09\u306b\u5931\u6557\u3057\u305f\u602a\u3057\u3044\u624b\u7d19\u304c\u898b\u3064\u304b\u3063\u305f\u5834\u5408\u3001\u305d\u308c\u3092\u3069\u3046\u51e6\u7406\u3059\u3079\u304d\u304b\u3092\u53d7\u4fe1\u5074\u306b\u6307\u793a\u3059\u308b\u300c\u53d6\u308a\u6271\u3044\u8aac\u660e\u66f8\u300d\u3067\u3059\u3002<\/p>\n<p>\u300c\u305d\u306e\u307e\u307e\u901a\u3057\u3066\u3088\u3044\u300d\u300c\u8ff7\u60d1\u30e1\u30fc\u30eb\u7bb1\u306b\u5165\u308c\u3066\u307b\u3057\u3044\u300d\u300c\u53d7\u3051\u53d6\u3089\u305a\u306b\u7834\u68c4\u3057\u3066\u307b\u3057\u3044\u300d\u3068\u3044\u3063\u305f\u5177\u4f53\u7684\u306a\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u9001\u4fe1\u5074\u304c\u3042\u3089\u304b\u3058\u3081\u6c7a\u3081\u3066\u304a\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u81ea\u793e\u3092\u9a19\u308b\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u304c\u304a\u5ba2\u69d8\u306e\u5143\u3078\u5c4a\u304f\u306e\u3092\u672a\u7136\u306b\u9632\u3050\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u300cSPF\u300d\u300cDKIM\u300d\u300cDMARC\u300d\u306e3\u3064\u306f\u3001\u3069\u308c\u304b\u4e00\u3064\u3067\u306f\u306a\u304f\u7d44\u307f\u5408\u308f\u305b\u3066\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u6700\u5927\u306e\u52b9\u679c\u3092\u767a\u63ee\u3057\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u5177\u4f53\u7684\u306a\u8a2d\u5b9a\u624b\u9806\uff08\u30ec\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9\uff09\u3084\u3001\u73fe\u5728\u306e\u8a2d\u5b9a\u72b6\u6cc1\u3092\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u307e\u3068\u3081\u3066\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n  <div class=\"blogcard\">\n  <a href=\"\/blog\/mail-delivery\/dmarc-setting\">\n \u00a0 <div class=\"blogcard_thumbnail\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2022\/09\/dkim1.jpg\" alt=\"\u3010\u56f3\u89e3\u3011DKIM\uff08\u30c7\u30a3\u30fc\u30ad\u30e0\uff09\u3068\u306f\uff1f\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u4ed5\u7d44\u307f\u3068SPF\u30fbDMARC\u3068\u306e\u9055\u3044\u3092\u89e3\u8aac\" width=\"90\" height=\"47\" \/><\/div>\n   <div class=\"blogcard_content\">\n    <div class=\"blogcard_title\">\u3010\u56f3\u89e3\u3011DKIM\uff08\u30c7\u30a3\u30fc\u30ad\u30e0\uff09\u3068\u306f\uff1f\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u4ed5\u7d44\u307f\u3068SPF\u30fbDMARC\u3068\u306e\u9055\u3044\u3092\u89e3\u8aac<\/div>\n    <div class=\"blogcard_excerpt\">DKIM\u3063\u3066\u3069\u3093\u306a\u4ed5\u7d44\u307f\uff1fGmail\u3084Outlook\u306b\u306f\u63a1\u7528\u3055\u308c\u3066\u3044\u308b\u306e\uff1f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u306e1\u3064\u3067\u3042\u308bDKIM\u306e\u4ed5\u7d44\u307f\u3084\u5f79\u5272\u306b\u3064\u3044\u3066\u56f3\u89e3\u3057\u307e\u2026<\/div>\n   <\/div>\n   <div class=\"clear\"><\/div>\n  <\/a>\n  <\/div>\n<h2>DKIM\u306e\u4ed5\u7d44\u307f<\/h2>\n<p>\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3067\u3042\u308bDKIM\u306f\u3069\u306e\u3088\u3046\u306a\u4ed5\u7d44\u307f\u3067\u50cd\u304d\u3001\u3069\u306e\u3088\u3046\u306a\u5f79\u5272\u3092\u62c5\u3046\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u30e1\u30fc\u30eb\u3092\u914d\u4fe1\u3059\u308b\u969b\u306bDKIM\u304c\u3069\u306e\u3088\u3046\u306b\u95a2\u308f\u3063\u3066\u3044\u308b\u306e\u304b\u56f3\u89e3\u3057\u307e\u3059\u3002<\/p>\n<h3>DKIM\u306e\u4ed5\u7d44\u307f<\/h3>\n<p>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u306e\u4e00\u3064\u3067\u3042\u308bDKIM\u306e\u4ed5\u7d44\u307f\u306f\u3001\u4ee5\u4e0b\u306e\u56f3\u306e\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-10118\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2022\/09\/dkim2.jpg\" alt=\"\" width=\"1200\" height=\"630\" \/><\/p>\n<p>DKIM\u3067\u306f\u4e0a\u56f3\u306b\u3042\u308b\u3088\u3046\u306a\u4ed5\u7d44\u307f\u3067\u3001DNS\u30b5\u30fc\u30d0\u30fc\u306b\u30c9\u30e1\u30a4\u30f3\u306b\u4e0d\u6b63\u304c\u306a\u3044\u304b\u306a\u3069\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002\u50cd\u304d\u306b\u3064\u3044\u3066\u3082\u3046\u5c11\u3057\u8a73\u3057\u304f\u8aac\u660e\u3092\u3059\u308b\u3068\u3001\u307e\u305aDKIM\u3067\u306f\u9001\u4fe1\u8005\u5074\u3067\u300c\u79d8\u5bc6\u9375\u300d\u3068\u300c\u516c\u958b\u9375\u300d\u3068\u547c\u3070\u308c\u308b\u30da\u30a2\u306e\u9375\u3092\u7528\u610f\u3057\u307e\u3059\u3002<\/p>\n<p>\u79d8\u5bc6\u9375\u306b\u3088\u3063\u3066\u30ed\u30c3\u30af\u3092\u304b\u3051\u3089\u308c\u305f\u30e1\u30fc\u30eb\u306f\u3001\u30da\u30a2\u306e\u516c\u958b\u9375\u3067\u3057\u304b\u691c\u8a3c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u9001\u4fe1\u8005\u5074\u306e\u516c\u958b\u9375\u306f<strong>\u300cDNS\uff08Domain Name System\uff09\u30b5\u30fc\u30d0\u30fc\u300d<\/strong>\u3068\u547c\u3070\u308c\u308b\u3001\u30c9\u30e1\u30a4\u30f3\u306eIP\u30a2\u30c9\u30ec\u30b9\u306a\u3069\u306e\u60c5\u5831\u3092\u7ba1\u7406\u3057\u3066\u3044\u308b\u30b5\u30fc\u30d0\u30fc\u306b\u516c\u958b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u53d7\u4fe1\u8005\u5074\u306f\u79d8\u5bc6\u9375\u306b\u3088\u3063\u3066\u96fb\u5b50\u7f72\u540d\u3092\u4ed8\u4e0e\u3055\u308c\u305f\u30e1\u30fc\u30eb\u304c\u3001\u53d7\u4fe1\u306e\u904e\u7a0b\u3067\u6539\u3056\u3093\u3055\u308c\u305f\u308a\u3001\u306a\u308a\u3059\u307e\u3057\u306b\u3088\u308b\u4e0d\u6b63\u30e1\u30fc\u30eb\u3067\u306a\u3044\u304b\u3092\u691c\u8a3c\u3059\u308b\u305f\u3081\u306b\u3001DNS\u30b5\u30fc\u30d0\u30fc\u306b\u516c\u958b\u9375\u3092\u4f9d\u983c\u3057\u307e\u3059\u3002DNS\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u516c\u958b\u9375\u3092\u53d7\u3051\u53d6\u3063\u305f\u53d7\u4fe1\u7528\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u516c\u958b\u9375\u3092\u4f7f\u3063\u3066\u79d8\u5bc6\u9375\u3067\u30ed\u30c3\u30af\u3055\u308c\u305f\u96fb\u5b50\u7f72\u540d\u3092\u691c\u8a3c\u3057\u307e\u3059\u3002<\/p>\n<h2>DKIM\u306f\u306a\u305c\u5fc5\u8981\u306a\u306e\u304b<\/h2>\n<p>\u30e1\u30fc\u30eb\u914d\u4fe1\u306b\u304a\u3051\u308bDKIM\u306e\u5f79\u5272\u306b\u306f\u3001\u5192\u982d\u304b\u3089\u89e3\u8aac\u3057\u3066\u3044\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u306a\u308a\u3059\u307e\u3057\u3084\u6539\u3056\u3093\u3092\u9632\u3050\u3060\u3051\u3067\u306a\u304f\u3001\u30e1\u30fc\u30eb\u306e\u5230\u9054\u7387\u3092\u30a2\u30c3\u30d7\u3055\u305b\u308b\u3068\u3044\u3046\u3082\u306e\u3082\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u306a\u308a\u3059\u307e\u3057\u30fb\u6539\u3056\u3093\u3092\u9632\u6b62\u3067\u304d\u308b<\/h3>\n<p>\u5192\u982d\u3067\u3082\u89e3\u8aac\u3057\u305f\u3088\u3046\u306bDKIM\u306e\u4ed5\u7d44\u307f\u304c\u3042\u308b\u3053\u3068\u3067\u3001<strong>\u306a\u308a\u3059\u307e\u3057\u3084\u6539\u3056\u3093\u3092\u9632\u6b62\u3059\u308b<\/strong>\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u81ea\u8eab\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306bDKIM\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u306a\u308a\u3059\u307e\u3057\u3084\u6539\u3056\u3093\u306e\u75d5\u8de1\u304c\u3042\u308b\u4e0d\u6b63\u30e1\u30fc\u30eb\u3092\u691c\u51fa\u3067\u304d\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u914d\u4fe1\u3059\u308b\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304c\u306a\u308a\u3059\u307e\u3057\u306b\u5229\u7528\u3055\u308c\u306a\u3044\u5bfe\u7b56\u306b\u3082\u306a\u308a\u307e\u3059\u3002\uff08\u53c2\u8003\uff1a<a href=\"https:\/\/eset-info.canon-its.jp\/malware_info\/special\/detail\/210608.html\">\u5b9f\u4f8b\u304b\u3089\u5b66\u3076\uff01\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30e1\u30fc\u30eb\u306e\u88ab\u5bb3\u3092\u9632\u3050\u305f\u3081\u306b\u5fc5\u8981\u306a\u3053\u3068<\/a>\uff09<\/p>\n<p>\u53c2\u8003\u8a18\u4e8b\u306e\u3088\u3046\u306b\u5b9f\u969b\u306b\u8a50\u6b3a\u88ab\u5bb3\u304c\u767a\u751f\u3057\u3066\u3057\u307e\u3046\u3068\u3001\u4f01\u696d\u30a4\u30e1\u30fc\u30b8\u306b\u3082\u591a\u5927\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u3066\u3057\u307e\u3046\u3067\u3057\u3087\u3046\u3002\u305d\u306e\u305f\u3081\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u696d\u52d9\u304c\u3042\u308b\u4f01\u696d\u306e\u591a\u304f\u306f\u3053\u306e\u3088\u3046\u306a\u30ea\u30b9\u30af\u3092\u8efd\u6e1b\u3059\u308b\u305f\u3081\u306bDKIM\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u30e1\u30fc\u30eb\u306e\u5230\u9054\u7387\u304c\u4e0a\u304c\u308b<\/h3>\n<p>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3092\u5c0e\u5165\u3057\u305f\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u914d\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u304c\u76f8\u624b\u306e\u53d7\u4fe1\u30dc\u30c3\u30af\u30b9\u306b\u5c4a\u304f\u5272\u5408\u3092\u793a\u3059<strong>\u300c\u5230\u9054\u7387\u300d<\/strong>\u304c\u30a2\u30c3\u30d7\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u53d7\u4fe1\u8005\u5074\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u4e0b\u304c\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u306a\u308a\u3059\u307e\u3057\u306f<strong>\u300cemotet\u300d\u3068\u547c\u3070\u308c\u308b\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u611f\u67d3\u5a92\u4f53<\/strong>\u3068\u3057\u3066\u3082\u6a5f\u80fd\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u95a2\u9023\u8a18\u4e8b\uff1a<a href=\"https:\/\/blastmail.jp\/blog\/mail\/emote\">emotet\u3068\u306f\uff1femotet\u306b\u3088\u308b\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5927\u5e45\u306a\u5f71\u97ff\u306b\u3064\u3044\u3066\u3082\u89e3\u8aac<\/a><\/p>\n<p>\u305d\u306e\u305f\u3081\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u4f01\u696d\u306f\u3001\u4fe1\u983c\u6027\u306e\u8a3c\u660e\u3067\u304d\u306a\u3044\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u306e\u30e1\u30fc\u30eb\u306b\u5bfe\u3059\u308b\u5bfe\u7b56\u3092\u5f37\u5316\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>DKIM\u306a\u3069\u306e\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u304c\u306a\u3044\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u306e\u30e1\u30fc\u30eb\u306f\u5371\u967a<\/h2>\n<p>\u60aa\u8cea\u306a\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u611f\u67d3\u7d4c\u8def\u306b\u306a\u308b\u53ef\u80fd\u6027\u3082\u3042\u308b\u4e0d\u6b63\u30e1\u30fc\u30eb\u306f\u3001\u4e16\u754c\u7684\u306b\u3082\u5371\u967a\u6027\u304c\u6307\u6458\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3042\u304f\u307e\u3067\u4e88\u60f3\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001Gmail\u3084Outlook\u306e\u3088\u3046\u306a\u30e6\u30fc\u30b6\u30fc\u304c\u591a\u3044\u5171\u7528\u30c9\u30e1\u30a4\u30f3\u3092\u6271\u3063\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u3067\u306f\u3001DKIM\u306a\u3069\u3092\u5c0e\u5165\u3057\u3066\u3044\u306a\u3044\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u306e<strong>\u30e1\u30fc\u30eb\u53d7\u4fe1\u3092\u5236\u9650\u3059\u308b\u53ef\u80fd\u6027<\/strong>\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3092\u5c0e\u5165\u305b\u305a\u306b\u30e1\u30fc\u30eb\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u65b9\u306f\u3001\u81ea\u8eab\u304c\u306a\u308a\u3059\u307e\u3057\u306e\u88ab\u5bb3\u306b\u906d\u3046\u53ef\u80fd\u6027\u3060\u3051\u3067\u306a\u304f\u3001\u9001\u4fe1\u3059\u308b\u30e1\u30fc\u30eb\u304c\u76f8\u624b\u306b\u5c4a\u304d\u3065\u3089\u304f\u306a\u308b\u74b0\u5883\u306b\u306a\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u3053\u3068\u3092\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fc\u306b\u95a2\u3059\u308b\u8abf\u67fb\u30fb\u60c5\u5831\u63d0\u4f9b\u3092\u3057\u3066\u3044\u308b\u300cSecurity NEXT\u300d\u306b\u3088\u308b\u3068\u30012022\u5e745\u6708\u6642\u70b9\u3067\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u8abf\u67fb\u5831\u544a\u304c\u306a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<blockquote><p>\u300c2\u6708\u306e\u8abf\u67fb\u306735.1\uff05\u306b\u3042\u305f\u308b79\u793e\u304c\u300cDMARC\u300d\u3092\u5c0e\u5165\u3057\u3066\u3044\u305f\u304c\u30013\u30ab\u6708\u5f8c\u306b\u5b9f\u65bd\u3057\u305f5\u6708\u306e\u8abf\u67fb\u3067\u306f112\u793e\uff0849.8\uff05\uff09\u304c\u8a2d\u5b9a\u3057\u3066\u3044\u305f\u3002\u300d<\/p><\/blockquote>\n<p>\u53c2\u8003\uff1a<a href=\"https:\/\/www.security-next.com\/165793\" target=\"_blank\" rel=\"noopener\">\u56fd\u5185\u4e3b\u8981\u4e0a\u5834\u4f01\u696d\u306e\u7d04\u534a\u6570\u304cDMARC\u5c0e\u5165<\/a><\/p>\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u30e1\u30fc\u30eb\u3092\u6271\u3046\u4f01\u696d\u306e\u591a\u304f\u306f\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fc\u3078\u306e\u95a2\u5fc3\u3092\u9ad8\u3081\u3066\u304a\u308a\u3001\u81ea\u793e\u306e\u4fe1\u7528\u3068\u9867\u5ba2\u306e\u500b\u4eba\u60c5\u5831\u3092\u5b88\u308b\u305f\u3081\u306b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u8981\u6ce8\u610f\uff01DKIM\u306b\u306f\u300c\u4f5c\u6210\u8005\u7f72\u540d\u300d\u3068\u300c\u7b2c\u4e09\u8005\u7f72\u540d\u300d\u304c\u3042\u308b<\/h2>\n<p>DKIM\u3092\u5c0e\u5165\u6e08\u307f\u3067\u3042\u3063\u3066\u3082\u671f\u5f85\u3057\u305f\u901a\u308a\u306e\u5230\u9054\u7387\u6539\u5584\u52b9\u679c\u304c\u5f97\u3089\u308c\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u539f\u56e0\u306e\u591a\u304f\u306fDKIM\u7f72\u540d\u306b\u304a\u3051\u308b\u300c\u30c9\u30e1\u30a4\u30f3\u306e\u7a2e\u985e\u300d\u306b\u3042\u308a\u307e\u3059\u3002\u5b9f\u306fDKIM\u306b\u306f\u5927\u304d\u304f\u5206\u3051\u3066\u300c\u7b2c\u4e09\u8005\u7f72\u540d\u300d\u3068\u300c\u4f5c\u6210\u8005\u7f72\u540d\u300d\u306e2\u7a2e\u985e\u304c\u5b58\u5728\u3057\u3001\u3069\u3061\u3089\u3067\u904b\u7528\u3055\u308c\u3066\u3044\u308b\u304b\u306b\u3088\u3063\u3066\u30e1\u30fc\u30eb\u53d7\u4fe1\u5074\u306e\u8a55\u4fa1\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5f37\u5ea6\u304c\u5927\u304d\u304f\u7570\u306a\u308a\u307e\u3059\u3002\u7279\u306bDMARC\u8a8d\u8a3c\u3092\u30d1\u30b9\u3057\u3066Gmail\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u6e96\u62e0\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u3053\u306e\u9055\u3044\u3092\u6b63\u3057\u304f\u7406\u89e3\u3057\u9069\u5207\u306a\u8a2d\u5b9a\u3092\u884c\u3046\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<h3>\u7b2c\u4e09\u8005\u7f72\u540d\u3068\u306f\uff08\u4ee3\u7406\u7f72\u540d\uff09<\/h3>\n<p>\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3084\u30af\u30e9\u30a6\u30c9\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u306b\u3001\u305d\u306e\u30b5\u30fc\u30d3\u30b9\u63d0\u4f9b\u4e8b\u696d\u8005\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u4f7f\u3063\u3066\u7f72\u540d\u3092\u884c\u3046\u65b9\u5f0f\u3092\u6307\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u81ea\u793e\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u300ccompany.co.jp\u300d\u3067\u3042\u3063\u3066\u3082\u7f72\u540d\u306b\u306f\u914d\u4fe1\u30b9\u30bf\u30f3\u30c9\u306e\u30c9\u30e1\u30a4\u30f3\u3067\u3042\u308b\u300chttps:\/\/www.google.com\/search?q=mail-service.com\u300d\u306a\u3069\u304c\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u65b9\u5f0f\u306f\u30e6\u30fc\u30b6\u30fc\u5074\u3067\u306eDNS\u8a2d\u5b9a\u4f5c\u696d\u304c\u4e0d\u8981\u3082\u3057\u304f\u306f\u6700\u5c0f\u9650\u3067\u6e08\u3080\u305f\u3081\u5c0e\u5165\u304c\u975e\u5e38\u306b\u7c21\u5358\u3067\u3059\u304c\u3001\u53d7\u4fe1\u5074\u304b\u3089\u306f\u300c\u4ee3\u7406\u4eba\u304c\u9001\u3063\u3066\u3044\u308b\u300d\u3068\u898b\u306a\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306e\u4fe1\u983c\u6027\u3092\u76f4\u63a5\u8a3c\u660e\u3059\u308b\u529b\u306f\u5f31\u304f\u3001\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u3068\u3057\u3066\u306e\u52b9\u679c\u306f\u9650\u5b9a\u7684\u306b\u306a\u3089\u3056\u308b\u3092\u5f97\u307e\u305b\u3093\u3002<\/p>\n<h3>\u4f5c\u6210\u8005\u7f72\u540d\u3068\u306f\uff08\u81ea\u793e\u7f72\u540d\uff09<\/h3>\n<p>\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\uff08From\u30a2\u30c9\u30ec\u30b9\uff09\u3068\u540c\u3058\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u3092\u4f7f\u3063\u3066\u7f72\u540d\u3092\u884c\u3046\u65b9\u5f0f\u3067\u3059\u3002\u9001\u4fe1\u5143\u3068\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\u3059\u308b\u305f\u3081\u3001\u53d7\u4fe1\u5074\u306f\u300c\u9593\u9055\u3044\u306a\u304f\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u6240\u6709\u8005\u304c\u9001\u3063\u305f\u30e1\u30fc\u30eb\u3067\u3042\u308b\u300d\u3068\u78ba\u4fe1\u3092\u6301\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3092\u300cDKIM\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u306e\u4e00\u81f4\u300d\u3068\u547c\u3073\u3001DMARC\u8a8d\u8a3c\u3092\u6210\u529f\u3055\u305b\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u8981\u4ef6\u3068\u306a\u308a\u307e\u3059\u3002\u4f01\u696d\u306e\u4fe1\u983c\u6027\u3092\u62c5\u4fdd\u3057\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u624b\u9593\u304c\u304b\u304b\u3063\u3066\u3082\u3053\u306e\u4f5c\u6210\u8005\u7f72\u540d\u3078\u306e\u5207\u308a\u66ff\u3048\u3092\u884c\u3046\u3053\u3068\u304c\u5f37\u304f\u63a8\u5968\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3>\u3042\u306a\u305f\u306e\u30e1\u30fc\u30eb\u306f\u3069\u3063\u3061\uff1f\u78ba\u8a8d\u65b9\u6cd5<\/h3>\n<p>\u81ea\u793e\u306e\u30e1\u30fc\u30eb\u304c\u73fe\u5728\u3069\u3061\u3089\u306e\u7f72\u540d\u3067\u9001\u3089\u308c\u3066\u3044\u308b\u304b\u306f\u3001\u5b9f\u969b\u306b\u9001\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u306e\u30d8\u30c3\u30c0\u30fc\u60c5\u5831\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3067\u3059\u3050\u306b\u5224\u5225\u53ef\u80fd\u3067\u3059\u3002Gmail\u3067\u3042\u308c\u3070\u53d7\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u306e\u30e1\u30cb\u30e5\u30fc\u304b\u3089\u300c\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30bd\u30fc\u30b9\u3092\u8868\u793a\u300d\u3092\u9078\u629e\u3057\u3001\u8868\u793a\u3055\u308c\u305f\u30c6\u30ad\u30b9\u30c8\u306e\u4e2d\u304b\u3089\u300cDKIM-Signature\u300d\u3068\u3044\u3046\u9805\u76ee\u3092\u63a2\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u305d\u306e\u4e2d\u306b\u3042\u308b\u300cd=\u300d\u3068\u3044\u3046\u30bf\u30b0\u306e\u5024\u306b\u6ce8\u76ee\u3057\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>d=\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\uff08\u4f8b\uff1acompany.co.jp\uff09\uff1a\u4f5c\u6210\u8005\u7f72\u540d\uff08\u63a8\u5968\u3055\u308c\u308b\u8a2d\u5b9a\uff09<\/li>\n<li>d=\u914d\u4fe1\u30c4\u30fc\u30eb\u306e\u30c9\u30e1\u30a4\u30f3\uff08\u4f8b\uff1abmail.jp\uff09\uff1a\u7b2c\u4e09\u8005\u7f72\u540d\uff08\u6539\u5584\u306e\u4f59\u5730\u3042\u308a\uff09<\/li>\n<li>DKIM-Signature\u304c\u898b\u5f53\u305f\u3089\u306a\u3044\uff1aDKIM\u81ea\u4f53\u304c\u672a\u8a2d\u5b9a<\/div><\/li>\n<\/ul>\n<h2>\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u5148\u306b\u3042\u308b\u300cBIMI\u300d\u3068\u306f<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2020\/05\/Group-192.png\" alt=\"bimi\u306e\u30a4\u30e1\u30fc\u30b8\u753b\u50cf\" width=\"1397\" height=\"1119\" class=\"alignnone size-full wp-image-21275\" \/><\/p>\n<p>SPF\u30fbDKIM\u30fbDMARC\u306e\u8a2d\u5b9a\u304c\u6574\u3063\u305f\u3089\u3001\u6b21\u306b\u6ce8\u76ee\u3057\u305f\u3044\u306e\u304c\u300cBIMI\uff08Brand Indicators for Message Identification\uff09\u300d\u3067\u3059\u3002BIMI\u306f\u3001\u53d7\u4fe1\u30c8\u30ec\u30a4\u4e0a\u3067\u30e1\u30fc\u30eb\u9001\u4fe1\u4f01\u696d\u306e<span style=\"color: #ff0000;\"><strong>\u30d6\u30e9\u30f3\u30c9\u30ed\u30b4\u3092\u8868\u793a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u308b<\/strong><\/span>\u898f\u683c\u3067\u3059\u3002<\/p>\n<p>Gmail\u3092\u306f\u3058\u3081\u3001Apple Mail\u3084Yahoo! Mail\uff08\u7c73\u56fd\uff09\u306a\u3069\u306e\u4e3b\u8981\u306a\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3078\u306e\u5bfe\u5fdc\u304c\u9032\u3093\u3067\u304a\u308a\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5f37\u5316\u3068\u30d6\u30e9\u30f3\u30c9\u8a8d\u77e5\u5411\u4e0a\u3092\u540c\u6642\u306b\u5b9f\u73fe\u3067\u304d\u308b\u6280\u8853\u3068\u3057\u3066\u3001\u8fd1\u5e74\u6ce8\u76ee\u3092\u96c6\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>BIMI\u306e\u4ed5\u7d44\u307f<\/h3>\n<p>BIMI\u306f\u9001\u4fe1\u8005\u306eDNS\u306b\u300cBIMI\u30ec\u30b3\u30fc\u30c9\u300d\u3092\u8ffd\u52a0\u3057\u3001\u305d\u3053\u306b\u81ea\u793e\u30ed\u30b4\u753b\u50cf\uff08SVG\u5f62\u5f0f\uff09\u306eURL\u3092\u8a18\u8f09\u3059\u308b\u3053\u3068\u3067\u6a5f\u80fd\u3057\u307e\u3059\u3002\u53d7\u4fe1\u5074\u306e\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u30e1\u30fc\u30eb\u53d7\u4fe1\u6642\u306bBIMI\u30ec\u30b3\u30fc\u30c9\u3092\u53c2\u7167\u3057\u3001\u8a8d\u8a3c\u306b\u6210\u529f\u3057\u305f\u5834\u5408\u306e\u307f\u3001\u9001\u4fe1\u8005\u30a2\u30a4\u30b3\u30f3\u3068\u3057\u3066\u30ed\u30b4\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001BIMI\u304c\u6a5f\u80fd\u3059\u308b\u305f\u3081\u306b\u306f<span style=\"color: #ff0000;\"><strong>DMARC\u30dd\u30ea\u30b7\u30fc\u304c\u300cquarantine\uff08\u9694\u96e2\uff09\u300d\u307e\u305f\u306f\u300creject\uff08\u62d2\u5426\uff09\u300d\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b<\/strong><\/span>\u3053\u3068\u304c\u524d\u63d0\u6761\u4ef6\u3067\u3059\u3002\u3064\u307e\u308a\u3001SPF\u30fbDKIM\u30fbDMARC\u306e\u8a8d\u8a3c\u3067\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304c\u6b63\u3057\u304f\u6574\u5099\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u3001BIMI\u5c0e\u5165\u306e\u5927\u524d\u63d0\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>BIMI\u3092\u5c0e\u5165\u3059\u308b\u30e1\u30ea\u30c3\u30c8<\/h3>\n<p>BIMI\u306e\u52b9\u679c\u306f\u3001\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u30fb\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u67a0\u3092\u8d85\u3048\u3066\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u9818\u57df\u306b\u307e\u3067\u53ca\u3073\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>\u958b\u5c01\u7387\u306e\u5411\u4e0a\uff1a<\/strong>\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u30d6\u30e9\u30f3\u30c9\u30ed\u30b4\u304c\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u3067\u8996\u8a8d\u6027\u304c\u9ad8\u307e\u308a\u3001\u958b\u5c01\u7387\u306e\u6539\u5584\u304c\u671f\u5f85\u3067\u304d\u307e\u3059<\/li>\n<li><strong>\u30d6\u30e9\u30f3\u30c9\u8a8d\u77e5\u306e\u5f37\u5316\uff1a<\/strong>\u30e1\u30fc\u30eb\u3092\u958b\u5c01\u3057\u306a\u304f\u3066\u3082\u53d7\u4fe1\u30c8\u30ec\u30a4\u4e0a\u3067\u30ed\u30b4\u304c\u8868\u793a\u3055\u308c\u308b\u305f\u3081\u3001\u7d99\u7d9a\u7684\u306a\u30d6\u30e9\u30f3\u30c9\u9732\u51fa\u306b\u3064\u306a\u304c\u308a\u307e\u3059<\/li>\n<li><strong>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u8a50\u6b3a\u306e\u6291\u5236\uff1a<\/strong>\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u306b\u306f\u30ed\u30b4\u304c\u8868\u793a\u3055\u308c\u306a\u3044\u305f\u3081\u3001\u53d7\u4fe1\u8005\u304c\u507d\u30e1\u30fc\u30eb\u3092\u898b\u5206\u3051\u3084\u3059\u304f\u306a\u308a\u307e\u3059<\/li>\n<li><strong>\u4fe1\u983c\u6027\u306e\u53ef\u8996\u5316\uff1a<\/strong>\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u5b8c\u5168\u306b\u30af\u30ea\u30a2\u3057\u3066\u3044\u308b\u3053\u3068\u306e\u30b7\u30b0\u30ca\u30eb\u3068\u306a\u308a\u3001\u4f01\u696d\u3068\u3057\u3066\u306e\u4fe1\u983c\u6027\u3092\u53d7\u4fe1\u8005\u306b\u793a\u305b\u307e\u3059<\/div><\/li>\n<\/ul>\n<h3>BIMI\u306e\u8a2d\u5b9a\u65b9\u6cd5\uff08\u6982\u8981\uff09<\/h3>\n<p>BIMI\u3092\u8a2d\u5b9a\u3059\u308b\u969b\u306e\u4e3b\u306a\u624b\u9806\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>SPF\u30fbDKIM\u30fbDMARC\u3092\u3059\u3079\u3066\u6b63\u3057\u304f\u8a2d\u5b9a\u3057\u3001DMARC\u30dd\u30ea\u30b7\u30fc\u3092quarantine\u307e\u305f\u306freject\u306b\u3059\u308b<\/li>\n<li>\u30d6\u30e9\u30f3\u30c9\u30ed\u30b4\u3092SVG\u5f62\u5f0f\uff08Tiny PS\u898f\u683c\uff09\u3067\u7528\u610f\u3059\u308b<\/li>\n<li>\u5fc5\u8981\u306b\u5fdc\u3058\u3066VMC\uff08Verified Mark Certificate\uff1a\u8a8d\u8a3c\u6e08\u307f\u30de\u30fc\u30af\u8a3c\u660e\u66f8\uff09\u3092\u8a8d\u8a3c\u5c40\u304b\u3089\u53d6\u5f97\u3059\u308b<\/li>\n<li>DNS\u306bBIMI\u30ec\u30b3\u30fc\u30c9\uff08TXT\u30ec\u30b3\u30fc\u30c9\uff09\u3092\u8ffd\u52a0\u3057\u3001\u30ed\u30b4\u753b\u50cf\u306eURL\u3092\u8a18\u8f09\u3059\u308b<\/li>\n<\/ul>\n<\/div>\n<p>\u306a\u304a\u3001Gmail\u3067BIMI\u30ed\u30b4\u3092\u78ba\u5b9f\u306b\u8868\u793a\u3055\u305b\u308b\u306b\u306fVMC\uff08\u5546\u6a19\u767b\u9332\u6e08\u307f\u30ed\u30b4\u306b\u5bfe\u3057\u3066\u767a\u884c\u3055\u308c\u308b\u8a3c\u660e\u66f8\uff09\u306e\u53d6\u5f97\u304c\u5fc5\u8981\u3068\u306a\u308a\u307e\u3059\u3002\u307e\u305a\u306fDKIM\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u6574\u5099\u3092\u7740\u5b9f\u306b\u9032\u3081\u308b\u3053\u3068\u304c\u3001BIMI\u5c0e\u5165\u3078\u306e\u6700\u521d\u306e\u4e00\u6b69\u3067\u3059\u3002<\/p>\n<p>BIMI\u306b\u3064\u3044\u3066\u306e\u8a73\u7d30\u306f\u3001BIM\u306e\u30e1\u30ea\u30c3\u30c8\u304b\u3089\u5c0e\u5165\u307e\u3067\u306e\u30b9\u30c6\u30c3\u30d7\u3001\u5931\u6557\u3057\u306a\u3044\u305f\u3081\u306eDMARC\u79fb\u884c\u30ed\u30fc\u30c9\u30de\u30c3\u30d7\u3001BIMI\u8a2d\u5b9a\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u307e\u3067\u3092\u307e\u3068\u3081\u305fBIMI\u5b8c\u5168\u30ac\u30a4\u30c9\u3092\u7121\u6599\u3067\u3054\u7528\u610f\u3057\u307e\u3057\u305f\u306e\u3067\u3054\u6d3b\u7528\u304f\u3060\u3055\u3044\u3002\u307e\u305f\u3001BIMI\u306b\u3064\u3044\u3066\u306e\u304a\u554f\u3044\u5408\u308f\u305b\u3084\u3054\u76f8\u8ac7\u3082\u53ef\u80fd\u3067\u3059\u306e\u3067\u304a\u6c17\u8efd\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><strong><a href=\"https:\/\/blastmail.jp\/blog\/download\/bimi-doc\" target=\"_blank\" rel=\"noopener\">&gt;&gt;BIMI\u5b8c\u5168\u30ac\u30a4\u30c9\u3092\u7121\u6599\u3067\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b<\/a><\/strong><\/p>\n<p><strong><a href=\"https:\/\/blastmail.jp\/blog\/download\/bimi\" target=\"_blank\" rel=\"noopener\">&gt;&gt;BIMI\u5c0e\u5165\u306b\u3064\u3044\u3066\u7121\u6599\u3067\u76f8\u8ac7\u30fb\u554f\u3044\u5408\u308f\u305b\u3059\u308b<\/a><\/strong><\/p>\n<h2>\u30e1\u30fc\u30eb\u306e\u4e00\u6589\u9001\u4fe1\u696d\u52d9\u306b\u306fDKIM\u3092\u63a1\u7528\u3057\u305f\u300c\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u300d\u304c\u30aa\u30b9\u30b9\u30e1<\/h2>\n<p>\u696d\u52d9\u3067\u30e1\u30fc\u30eb\u306e\u4e00\u6589\u9001\u4fe1\u304c\u3042\u308b\u4f01\u696d\u3067\u306f\u3001DKIM\u306a\u3069\u306e\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3092\u642d\u8f09\u3057\u305f\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306e\u5229\u7528\u304c\u30aa\u30b9\u30b9\u30e1\u3067\u3059\u3002<\/p>\n<p>\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3068\u306f\u3001\u4e00\u6589\u9001\u4fe1\u306b\u7279\u5316\u3057\u305f\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u30b7\u30b9\u30c6\u30e0\u3067\u3001\u9023\u7d61\u7528\u3068\u3057\u3066\u306e\u4e00\u6589\u9001\u4fe1\u306f\u3082\u3061\u308d\u3093\u3001\u30e1\u30fc\u30eb\u96c6\u5ba2\u3067\u306e\u4e00\u6589\u9001\u4fe1\u306b\u3082\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u3068\u306f\uff1f<\/h3>\n<p>\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u3068\u306f\u3001\u30e1\u30fc\u30eb\u306e\u9001\u53d7\u4fe1\u3084\u914d\u4fe1\u30ea\u30b9\u30c8\u306e\u7ba1\u7406\u3092\u3059\u308b\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002\u5404\u30b5\u30fc\u30d3\u30b9\u306b\u3088\u3063\u3066\u5dee\u306f\u3042\u308a\u307e\u3059\u304c\u3001<strong>\u30b5\u30fc\u30d0\u30fc\u306b\u8ff7\u60d1\u30e1\u30fc\u30eb\u30fb\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u3068\u8a8d\u8b58\u3055\u308c\u3065\u3089\u304f\u306a\u308b\u5bfe\u7b56\u304c\u306a\u3055\u308c\u3066\u3044\u308b\u3082\u306e<\/strong>\u304c\u591a\u3044\u3067\u3059\u3002\u30e1\u30fc\u30eb\u306e\u30a8\u30e9\u30fc\u3084\u30ea\u30b9\u30c8\u7ba1\u7406\u306b\u7169\u96d1\u3055\u3092\u611f\u3058\u3066\u3044\u308b\u306e\u3067\u3042\u308c\u3070\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u306e\u5c0e\u5165\u3092\u691c\u8a0e\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u307e\u305f\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306f\u8907\u6570\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306b\u5bfe\u3057\u3066\u540c\u6642\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u5927\u898f\u6a21\u306a\u30e1\u30fc\u30eb\u9001\u4fe1\u306f\u3057\u3070\u3057\u3070\u30b9\u30d1\u30e0\u3068\u898b\u306a\u3055\u308c\u304c\u3061\u3067\u3001\u305d\u306e\u7d50\u679c\u3001\u30e1\u30fc\u30eb\u304c\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u305f\u308a\u3001\u6700\u60aa\u306e\u5834\u5408\u306f\u9001\u4fe1\u5148\u306b\u5c4a\u304b\u306a\u3044\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>API\u9023\u643a\u30fbSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u300c\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3(blastengine)\u300d\u306e\u6d3b\u7528<\/h3>\n<p><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 size-full wp-image-19575\" \/><\/p>\n<p><a href=\"https:\/\/blastengine.jp\/\">\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3(blastengine)<\/a>\u306f\u3001\u9ad8\u901f\u3067\u5927\u91cf\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u3092\u5b9f\u73fe\u3059\u308bSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3059\u308b\u3068\u3068\u3082\u306b\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304c\u4e0d\u8981\u306aAPI\u7d4c\u7531\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u6a5f\u80fd\u3082\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u304c\u30b5\u30fc\u30d0\u30fc\u306e\u7ba1\u7406\u3068\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3092\u62c5\u3046\u3053\u3068\u3067\u3001\u5e38\u306b\u4fe1\u983c\u6027\u306e\u9ad8\u3044IP\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u7dad\u6301\u3057\u3001\u30e1\u30fc\u30eb\u9001\u4fe1\u306e\u5b89\u5168\u6027\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u8ab2\u984c\u3092\u62b1\u3048\u3066\u3044\u308b\u5834\u5408\u3001\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u306e\u4f7f\u7528\u3092\u691c\u8a0e\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>IP\u30a2\u30c9\u30ec\u30b9\u3084\u30c9\u30e1\u30a4\u30f3\u304c\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u767b\u9332\u3055\u308c\u30e1\u30fc\u30eb\u304c\u9001\u308c\u306a\u3044<\/li>\n<li>\u56fd\u5185\u30ad\u30e3\u30ea\u30a2\u5b9b\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u306b\u5931\u6557\u3057\u3069\u3046\u5bfe\u51e6\u3059\u308c\u3070\u826f\u3044\u304b\u5206\u304b\u3089\u306a\u3044<\/li>\n<li>\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u7ba1\u7406\u3084\u904b\u7528\u3092\u81ea\u793e\u3067\u884c\u3044\u305f\u304f\u306a\u3044<\/div><\/li>\n<\/ul>\n<p>\u3055\u3089\u306b\u300127,000\u793e\u4ee5\u4e0a\u306e\u5c0e\u5165\u5b9f\u7e3e\u3092\u6301\u3061\u300115\u5e74\u9023\u7d9a\u3067\u9867\u5ba2\u5c0e\u5165\u6570No.1\u3092\u8a87\u308b\u59c9\u59b9\u88fd\u54c1blastmail\u306b\u3088\u3063\u3066\u69cb\u7bc9\u3055\u308c\u305f\u914d\u4fe1\u57fa\u76e4\u3092\u6d3b\u7528\u3057\u3001\u5404\u30e1\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3084\u643a\u5e2f\u30ad\u30e3\u30ea\u30a2\u30c9\u30e1\u30a4\u30f3\u306b\u6700\u9069\u5316\u3055\u308c\u305f\u30e1\u30fc\u30eb\u914d\u4fe1\u3092\u5927\u898f\u6a21\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u901a\u3058\u3066\u884c\u3044\u3001\u65e5\u672c\u56fd\u5185\u3078\u9ad8\u901f\u304b\u306499\uff05\u4ee5\u4e0a\u306e\u9ad8\u3044\u30e1\u30fc\u30eb\u5230\u9054\u7387\u3092\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30b5\u30fc\u30d3\u30b9\u306f\u3001\u6708\u984d3,000\u5186\u304b\u3089\u5229\u7528\u53ef\u80fd\u3067\u3001\u30b3\u30b9\u30c8\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u512a\u308c\u3001\u30e1\u30fc\u30eb\u30b5\u30dd\u30fc\u30c8\u3060\u3051\u3067\u306a\u304f\u65e5\u672c\u8a9e\u306e\u96fb\u8a71\u30b5\u30dd\u30fc\u30c8\u3082\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u5165\u529b\u3059\u308b\u3060\u3051\u3067\u7c21\u5358\u306b\u30c8\u30e9\u30a4\u30a2\u30eb\u3092\u958b\u59cb\u3067\u304d\u307e\u3059\u306e\u3067\u3001\u305c\u3072\u304a\u8a66\u3057\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><a href=\"https:\/\/blastengine.jp\/\">\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u3092\u7121\u6599\u3067\u8a66\u3057\u3066\u307f\u308b\uff1e<\/a><\/p>\n<h3>\u30b7\u30a7\u30a21\u4f4d\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u300c\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u300d\u306e\u6d3b\u7528<\/h3>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-14488\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2024\/07\/blastmail-top.jpg\" alt=\"\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u306e\u30a2\u30a4\u30ad\u30e3\u30c3\u30c1\u753b\u50cf\" width=\"941\" height=\"483\" \/><\/p>\n<p>\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u306f\u3001\u524d\u8ff0\u306e\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u3068\u306f\u7570\u306a\u308a\u3001<strong>\u30e1\u30eb\u30de\u30ac\u914d\u4fe1\u3084\u5927\u91cf\u914d\u4fe1\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u306b\u7279\u5316<\/strong>\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u306f15\u5e74\u9023\u7d9a\u9867\u5ba2\u5c0e\u5165\u6570\u30671\u4f4d\u3092\u7372\u5f97\u3057\u3066\u304a\u308a\u3001\u76f4\u611f\u7684\u306a\u64cd\u4f5c\u6027\u3068\u3001\u512a\u308c\u305f\u30b3\u30b9\u30c8\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u3042\u308a\u307e\u3059\u3002\u5e45\u5e83\u3044\u696d\u754c\u3084\u516c\u5171\u6a5f\u95a2\u304b\u3089\u306e\u652f\u6301\u3092\u53d7\u3051\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u30c4\u30fc\u30eb\u3068\u3057\u3066\u306e\u5730\u4f4d\u3092\u78ba\u7acb\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u8ab2\u984c\u3092\u62b1\u3048\u3066\u3044\u308b\u5834\u5408\u3001\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u306e\u4f7f\u7528\u3092\u691c\u8a0e\u3059\u3079\u304d\u3067\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>\u914d\u4fe1\u3057\u305f\u30e1\u30eb\u30de\u30ac\u304c\u8ff7\u60d1\u30e1\u30fc\u30eb\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u3066\u3057\u307e\u3046<\/li>\n<li>\u5927\u91cf\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u306b\u6642\u9593\u304c\u304b\u304b\u3063\u3066\u3057\u307e\u3044\u52b9\u7387\u304c\u60aa\u3044<\/li>\n<li>\u5b89\u304f\u3066\u4fe1\u983c\u3067\u304d\u308b\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u63a2\u3057\u3066\u3044\u308b<\/div><\/li>\n<\/ul>\n<p>SPF\u30fbDKIM\u306a\u3069\u3001Gmail\u306e\u9001\u4fe1\u8005\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u306e\u306f\u3082\u3061\u308d\u3093\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u5206\u3051\u306b\u3088\u308b\u30bb\u30b0\u30e1\u30f3\u30c8\u914d\u4fe1\u3001\u6210\u679c\u6e2c\u5b9a\u3001HTML\u30e1\u30fc\u30eb\u306e\u7de8\u96c6\u306a\u3069\u3001\u5fc5\u8981\u306a\u6a5f\u80fd\u3092\u4e00\u901a\u308a\u5099\u3048\u3066\u3044\u307e\u3059\u3002\u6700\u3082\u30ea\u30fc\u30ba\u30ca\u30d6\u30eb\u306a\u30d7\u30e9\u30f3\u3067\u3042\u308c\u3070\u3001\u6708\u984d4,000\u5186\u672a\u6e80\u304b\u3089\u5229\u7528\u958b\u59cb\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u30b7\u30f3\u30d7\u30eb\u3055\u3068\u4f4e\u4fa1\u683c\u304b\u3089\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u30c4\u30fc\u30eb\u306e\u4f7f\u7528\u304c\u521d\u3081\u3066\u306e\u65b9\u306b\u3082\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u7121\u6599\u30c8\u30e9\u30a4\u30a2\u30eb\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u8208\u5473\u304c\u3042\u308c\u3070\u305c\u3072\u5229\u7528\u3092\u691c\u8a0e\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\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<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:14px\" target=\"_self\" id=\"bottom_select20-1\"><span style=\"color:#FFFFFF;padding:0px 34px;font-size:25px;line-height:50px;border-color:#d46863;border-radius:14px;text-shadow:none\"> \u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u306e\u7121\u6599\u304a\u305f\u3081\u3057\u306f\u3053\u3061\u3089 &gt;<\/span><\/a><\/div>\n<div class=\"blog-faq\"><h2 class=\"blog-faq__title\">FAQ<\/h2><dl class=\"blog-faq__list\">\n<dt class=\"blog-faq__question\">Q\uff1aDKIM\u3068\u306f\u3069\u306e\u3088\u3046\u306a\u6280\u8853\u3067\u3001SPF\u3068\u306f\u4f55\u304c\u9055\u3044\u307e\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1aDKIM\u306f\u30e1\u30fc\u30eb\u306b\u96fb\u5b50\u7f72\u540d\u3092\u4ed8\u4e0e\u3057\u3066\u300c\u6539\u3056\u3093\u300d\u3084\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u3092\u9632\u3050\u6280\u8853\u3067\u3059\u3002SPF\u304c\u9001\u4fe1\u5143\u306e\u300c\u4f4f\u6240\uff08IP\u30a2\u30c9\u30ec\u30b9\uff09\u300d\u3092\u78ba\u8a8d\u3059\u308b\u306e\u306b\u5bfe\u3057\u3001DKIM\u306f\u300c\u5c01\u5370\uff08\u5370\u9451\uff09\u300d\u3067\u4e2d\u8eab\u306e\u6b63\u5f53\u6027\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<strong>\u3053\u308c\u3089\u306f\u7af6\u5408\u3059\u308b\u6280\u8853\u3067\u306f\u306a\u304f\u3001\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3088\u308a\u5f37\u56fa\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/strong><\/dd>\n<dt class=\"blog-faq__question\">Q\uff1aDKIM\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u306b\u3069\u306e\u3088\u3046\u306a\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306b\u306a\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u53d7\u4fe1\u5074\u304b\u3089\u306e\u4fe1\u983c\u6027\u304c\u9ad8\u307e\u308a\u300c\u30e1\u30fc\u30eb\u5230\u9054\u7387\u300d\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<strong>\u7279\u306bGmail\u306e\u65b0\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3067\u306f\u91cd\u8981\u306a\u8981\u4ef6\u3068\u306a\u3063\u3066\u304a\u308a\u3001\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u3092\u78ba\u5b9f\u306b\u5c4a\u3051\u308b\u305f\u3081\u306b\u306f\u6b20\u304b\u305b\u306a\u3044\u8a2d\u5b9a\u3067\u3059\u3002<\/strong><\/dd>\n<dt class=\"blog-faq__question\">Q\uff1aDKIM\u306e\u300c\u4f5c\u6210\u8005\u7f72\u540d\u300d\u3068\u300c\u7b2c\u4e09\u8005\u7f72\u540d\u300d\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u7b2c\u4e09\u8005\u7f72\u540d\u306f\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u306e\u30c9\u30e1\u30a4\u30f3\u3001\u4f5c\u6210\u8005\u7f72\u540d\u306f\u81ea\u793e\u306e\u30c9\u30e1\u30a4\u30f3\u3067\u7f72\u540d\u3092\u884c\u3046\u65b9\u5f0f\u3067\u3059\u3002<strong>DMARC\u8a8d\u8a3c\u3092\u6210\u529f\u3055\u305b\u3001\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u306e\u52b9\u679c\u3092\u6700\u5927\u5316\u3059\u308b\u306b\u306f\u3001\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u3067\u306e\u300c\u4f5c\u6210\u8005\u7f72\u540d\u300d\u304c\u5fc5\u9808\u3068\u306a\u308a\u307e\u3059\u3002<\/strong><\/dd>\n<dt class=\"blog-faq__question\">Q\uff1a\u81ea\u793e\u306e\u30e1\u30fc\u30eb\u304cDKIM\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5\u306f\u3042\u308a\u307e\u3059\u304b\uff1f<\/dt><dd 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