{"id":19071,"date":"2025-07-29T18:22:22","date_gmt":"2025-07-29T09:22:22","guid":{"rendered":"https:\/\/blastmail.jp\/blog\/?p=19071"},"modified":"2025-07-30T18:03:07","modified_gmt":"2025-07-30T09:03:07","slug":"identification","status":"publish","type":"post","link":"https:\/\/blastmail.jp\/blog\/no-delivery\/identification","title":{"rendered":"\u3010\u30e1\u30fc\u30eb\u306e\u8eab\u5206\u8a3c\u3011SPF\u30fbDKIM\u30fbDMARC\u3067\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u3092\u9632\u304e\u3001\u30e1\u30fc\u30eb\u3092\u78ba\u5b9f\u306b\u5c4a\u3051\u308b\u65b9\u6cd5"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2025\/07\/WEBCAS\u306e\u30b3\u30d4\u30fc.png\" alt=\"\" width=\"1200\" height=\"628\" class=\"alignnone size-full wp-image-19072\" \/><\/p>\n<p>\u300c\u8ff7\u60d1\u30e1\u30fc\u30eb\u3058\u3083\u306a\u3044\u306e\u306b\u3001\u306a\u305c\u304b\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044..\u3002\u300d \u300c\u304a\u5ba2\u69d8\u306b\u9001\u3063\u305f\u5927\u4e8b\u306a\u30e1\u30fc\u30eb\u304c\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u3063\u3066\u3057\u307e\u3046..\u3002\u300d<\/p>\n<p>\u3053\u3093\u306a\u60a9\u307f\u3092\u62b1\u3048\u3066\u3044\u307e\u305b\u3093\u304b\uff1f<\/p>\n<p>\u73fe\u4ee3\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u3067\u306f\u3001\u30b5\u30a4\u30d0\u30fc\u72af\u7f6a\u306e\u5897\u52a0\u306b\u4f34\u3044\u3001\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u30e1\u30fc\u30eb\u3078\u306e\u5bfe\u7b56\u304c\u975e\u5e38\u306b\u91cd\u8981\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3042\u306a\u305f\u304c\u9001\u308b\u30e1\u30fc\u30eb\u304c\u672c\u5f53\u306b\u3042\u306a\u305f\u81ea\u8eab\u304b\u3089\u9001\u3089\u308c\u305f\u3082\u306e\u3067\u3042\u308b\u3053\u3068\u3092\u8a3c\u660e\u3067\u304d\u306a\u3051\u308c\u3070\u3001\u3069\u3093\u306a\u306b\u5927\u5207\u306a\u30e1\u30fc\u30eb\u3067\u3082\u53d7\u4fe1\u30dc\u30c3\u30af\u30b9\u306b\u5c4a\u304b\u305a\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u5224\u65ad\u3055\u308c\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u3053\u3067\u30ab\u30ae\u3068\u306a\u308b\u306e\u304c\u3001<strong>SPF\u3001DKIM\u3001DMARC\u3068\u3044\u30463\u3064\u306e\u300c\u30e1\u30fc\u30eb\u306e\u8eab\u5206\u8a3c\u660e\u66f8\u300d\u3067\u3059\u3002<\/strong>\u3053\u308c\u3089\u306f\u3001\u3042\u306a\u305f\u306e\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u3092\u8a3c\u660e\u3057\u3001\u30e1\u30fc\u30eb\u5230\u9054\u7387\u3092\u683c\u6bb5\u306b\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u306a\u6280\u8853\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u30e1\u30fc\u30eb\u8a8d\u8a3c\u6280\u8853\u304c\u306a\u305c\u91cd\u8981\u306a\u306e\u304b\u3001\u305d\u3057\u3066\u3069\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3059\u308c\u3070\u826f\u3044\u306e\u304b\u3092\u3001\u521d\u5fc3\u8005\u306e\u65b9\u306b\u3082\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p>\u5c02\u9580\u77e5\u8b58\u304c\u306a\u3044\u65b9\u304c\u5916\u6ce8\u3057\u3066\u3067\u3082\u3001\u5fc5\u305a\u8a2d\u5b9a\u3059\u3079\u304d\u7406\u7531\u3082\u304a\u4f1d\u3048\u3057\u307e\u3059\u3002<\/p>\n<h2>\u306a\u305c\u30e1\u30fc\u30eb\u306e\u300c\u8eab\u5206\u8a3c\u660e\u66f8\u300d\u304c\u5fc5\u8981\u306a\u306e\u304b\uff1f<\/h2>\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u306f\u3001\u8ab0\u3067\u3082\u7c21\u5358\u306b\u9001\u4fe1\u5143\u3092\u507d\u3063\u3066\u30e1\u30fc\u30eb\u3092\u9001\u308b\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u304c\u3067\u304d\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u8a50\u6b3a\u3084\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\uff08BEC\uff09\u306a\u3069\u3001\u306a\u308a\u3059\u307e\u3057\u306b\u3088\u308b\u88ab\u5bb3\u304c\u5f8c\u3092\u7d76\u3061\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u308c\u306b\u5bfe\u6297\u3059\u308b\u305f\u3081\u3001Gmail\u306a\u3069\u306e\u53d7\u4fe1\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001<strong>\u9001\u3089\u308c\u3066\u304d\u305f\u30e1\u30fc\u30eb\u304c\u672c\u5f53\u306b\u305d\u306e\u9001\u4fe1\u5143\u304b\u3089\u6765\u305f\u3082\u306e\u306a\u306e\u304b\u3001\u9014\u4e2d\u3067\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u304b<\/strong>\u306a\u3069\u3092\u53b3\u3057\u304f\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>\u30e1\u30fc\u30eb\u8a8d\u8a3c\u6280\u8853\u306f\u3001\u3053\u306e\u30c1\u30a7\u30c3\u30af\u306b\u5408\u683c\u3059\u308b\u305f\u3081\u306e\u300c\u8eab\u5206\u8a3c\u660e\u66f8\u300d\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u3092\u9069\u5207\u306b\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u3042\u306a\u305f\u306e\u30e1\u30fc\u30eb\u304c\u4fe1\u983c\u3067\u304d\u308b\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u3067\u3042\u308b\u3068\u8a3c\u660e\u3055\u308c\u3001\u53d7\u4fe1\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304b\u3089\u306e\u8a55\u4fa1\uff08\u30c9\u30e1\u30a4\u30f3\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\uff09\u304c\u9ad8\u307e\u308a\u3001<strong>\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u3057\u3066\u6271\u308f\u308c\u308b\u30ea\u30b9\u30af\u3092\u5927\u5e45\u306b\u6e1b\u3089\u305b\u308b<\/strong>\u306e\u3067\u3059\u3002<\/p>\n<h3>\u306a\u308a\u3059\u307e\u3055\u308c\u305f\u5834\u5408\u306e\u4f01\u696d\u30ea\u30b9\u30af<\/h3>\n<p>\u3082\u3057\u3042\u306a\u305f\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u306a\u308a\u3059\u307e\u3057\u306b\u60aa\u7528\u3055\u308c\u305f\u5834\u5408\u3001\u304a\u5ba2\u69d8\u3084\u53d6\u5f15\u5148\u306b\u507d\u30e1\u30fc\u30eb\u304c\u9001\u3089\u308c\u3001\u6b21\u306e\u3088\u3046\u306a\u6df1\u523b\u306a\u88ab\u5bb3\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u304a\u5ba2\u69d8\u306e\u88ab\u5bb3\uff1a \u304a\u5ba2\u69d8\u304c\u8a50\u6b3a\u306b\u906d\u3046\u3001\u500b\u4eba\u60c5\u5831\u304c\u629c\u304d\u53d6\u3089\u308c\u308b<br \/>\n\u30d6\u30e9\u30f3\u30c9\u30a4\u30e1\u30fc\u30b8\u306e\u6bc0\u640d\uff1a \u300c\u3042\u306e\u4f1a\u793e\u304b\u3089\u306e\u30e1\u30fc\u30eb\u306f\u5371\u306a\u3044\u300d\u3068\u8a8d\u8b58\u3055\u308c\u3001\u4fe1\u983c\u3092\u5931\u3046<br \/>\n\u4e8b\u696d\u3078\u306e\u5f71\u97ff\uff1a \u30e1\u30fc\u30eb\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u306e\u52b9\u679c\u304c\u30bc\u30ed\u306b\u306a\u308b\u3001\u53d6\u5f15\u304c\u505c\u6b62\u3055\u308c\u308b<\/p>\n<p>\u3053\u306e\u3088\u3046\u306a\u30ea\u30b9\u30af\u3092\u672a\u7136\u306b\u9632\u3050\u305f\u3081\u306b\u3082\u3001\u30e1\u30fc\u30eb\u306e\u300c\u8eab\u5206\u8a3c\u660e\u66f8\u300d\u306f\u5fc5\u9808\u306a\u306e\u3067\u3059\u3002<\/p>\n<h2>3\u3064\u306e\u30e1\u30fc\u30eb\u8a8d\u8a3c\u6280\u8853\u3092\u7406\u89e3\u3059\u308b\u3010SPF\u30fb DKIM\u30fb DMARC\u3011<\/h2>\n<p>\u3053\u3053\u3067\u306f\u3001\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u3092\u8a3c\u660e\u3059\u308b\u305f\u3081\u306e\u4e3b\u8981\u306a3\u3064\u306e\u8a8d\u8a3c\u6280\u8853\u306b\u3064\u3044\u3066\u3001\u305d\u308c\u305e\u308c\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h3>1. SPF\uff08Sender Policy Framework\uff09\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u306e\u6b63\u898f\u6027\u3092\u8a3c\u660e<\/h3>\n<p>SPF\u306f\u3001\u300c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u306e\u30e1\u30fc\u30eb\u306f\u3001\u3053\u306eIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u9001\u3063\u3066OK\u3067\u3059\u300d\u3068\u3044\u3046\u60c5\u5831\u3092\u3001\u3042\u306a\u305f\u306e\u30c9\u30e1\u30a4\u30f3\uff08\u4f8b\uff1arakus.co.jp\uff09\u306b\u7d10\u4ed8\u3051\u3066\u516c\u958b\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<h4>\u8eab\u5206\u8a3c\u660e\u66f8\u3068\u3057\u3066\u306e\u5f79\u5272\uff1aSPF<\/h4>\n<p>\u4f8b\u3048\u308b\u306a\u3089\u3001<\/p>\n<blockquote><p>\u300c\u3053\u306e\u8377\u7269\u306f\u3001\u3053\u306e\u4f4f\u6240\u306e\u90f5\u4fbf\u5c40\u304b\u3089\u51fa\u3059\u306e\u304c\u6b63\u5f0f\u306a\u30eb\u30fc\u30c8\u3067\u3059\uff01\u300d<\/p><\/blockquote>\n<p>\u3068\u4e8b\u524d\u306b\u90f5\u4fbf\u5c40\uff08\u53d7\u4fe1\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\uff09\u306b\u4f1d\u3048\u3066\u304a\u304f\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u53d7\u4fe1\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001\u53d7\u3051\u53d6\u3063\u305f\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u304c\u3001SPF\u30ec\u30b3\u30fc\u30c9\u3067\u8a31\u53ef\u3055\u308c\u3066\u3044\u308bIP\u30a2\u30c9\u30ec\u30b9\u3068\u4e00\u81f4\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u4e00\u81f4\u3059\u308c\u3070\u300c\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u300d\u3001\u4e00\u81f4\u3057\u306a\u3051\u308c\u3070\u300c\u306a\u308a\u3059\u307e\u3057\u306e\u53ef\u80fd\u6027\u3042\u308a\u300d\u3068\u5224\u65ad\u3057\u307e\u3059\u3002<\/p>\n\n  <div class=\"blogcard\">\n  <a href=\"https:\/\/blastmail.jp\/blog\/spam\/spf-record\">\n   <div class=\"blogcard_thumbnail\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2020\/05\/SPF_banner.png\" alt=\"SPF\uff08Sender Policy Framework\uff09\u3068\u306f\uff1f\uff5c\u30e1\u30fc\u30eb\u8a8d\u8a3c\u306e\u4ed5\u7d44\u307f\u30fbSPF\u30ec\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\" width=\"90\" height=\"47\" \/><\/div>\n   <div class=\"blogcard_content\">\n    <div class=\"blogcard_title\">SPF\uff08Sender Policy Framework\uff09\u3068\u306f\uff1f\uff5c\u30e1\u30fc\u30eb\u8a8d\u8a3c\u306e\u4ed5\u7d44\u307f\u30fbSPF\u30ec\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac<\/div>\n    <div class=\"blogcard_excerpt\">SPF\u3068\u306f\u3001\u300c\u3053\u306e\u30e1\u30fc\u30eb\u306f\u6b63\u3057\u3044\u9001\u4fe1\u5143\u304b\u3089\u9001\u3089\u308c\u3066\u3044\u307e\u3059\u300d\u3068\u53d7\u4fe1\u5074\u306b\u8a3c\u660e\u3059\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u306e\u3053\u3068\u3067\u3059\u3002\u300cSender Policy Framewo\u2026<\/div>\n   <\/div>\n   <div class=\"clear\"><\/div>\n  <\/a>\n  <\/div>\n<h3>2. DKIM\uff08DomainKeys Identified Mail\uff09\u30e1\u30fc\u30eb\u5185\u5bb9\u306e\u6539\u3056\u3093\u9632\u6b62\u3068\u7f72\u540d<\/h3>\n<p>DKIM\u306f\u3001\u30e1\u30fc\u30eb\u306b\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\uff08\u96fb\u5b50\u7684\u306a\u30b5\u30a4\u30f3\uff09\u3092\u4ed8\u4e0e\u3059\u308b\u3053\u3068\u3067\u3001<\/p>\n<p>\u300c\u3053\u306e\u30e1\u30fc\u30eb\u306f\u3001\u6b63\u898f\u306e\u9001\u4fe1\u8005\u304c\u9001\u3063\u305f\u3082\u306e\u3067\u3001\u9014\u4e2d\u3067\u5185\u5bb9\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u307e\u305b\u3093\uff01\u300d<\/p>\n<p>\u3068\u3044\u3046\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<h4>\u8eab\u5206\u8a3c\u660e\u66f8\u3068\u3057\u3066\u306e\u5f79\u5272\uff1aDKIM<\/h4>\n<p>\u3053\u308c\u306f\u3001<\/p>\n<blockquote><p>\u300c\u3053\u306e\u624b\u7d19\u306b\u306f\u3001\u79c1\u3057\u304b\u66f8\u3051\u306a\u3044\u7279\u6b8a\u306a\u30b5\u30a4\u30f3\u3068\u3001\u5185\u5bb9\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b\u5c01\u5370\u304c\u3055\u308c\u3066\u3044\u307e\u3059\uff01\u300d<\/p><\/blockquote>\n<p>\u3068\u3044\u3046\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u53d7\u4fe1\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001\u30e1\u30fc\u30eb\u306b\u4ed8\u4e0e\u3055\u308c\u305fDKIM\u7f72\u540d\u3068\u3001\u3042\u306a\u305f\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u60c5\u5831\u3092\u7167\u5408\u3057\u3066\u3001\u30e1\u30fc\u30eb\u306e\u6b63\u5f53\u6027\u3068\u6539\u3056\u3093\u306e\u6709\u7121\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n  <div class=\"blogcard\">\n  <a href=\"https:\/\/blastmail.jp\/blog\/mail-delivery\/dkim\">\n   <div class=\"blogcard_thumbnail\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2022\/09\/DKIM_banner.png\" alt=\"DKIM\uff08\u30c7\u30a3\u30fc\u30ad\u30e0\uff09\u3068\u306f\uff1f\uff5c\u4ed5\u7d44\u307f\u304b\u3089\u8a2d\u5b9a\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\uff01\" width=\"90\" height=\"47\" \/><\/div>\n   <div class=\"blogcard_content\">\n    <div class=\"blogcard_title\">DKIM\uff08\u30c7\u30a3\u30fc\u30ad\u30e0\uff09\u3068\u306f\uff1f\uff5c\u4ed5\u7d44\u307f\u304b\u3089\u8a2d\u5b9a\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\uff01<\/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<h3>3. DMARC\uff08Domain-based Message Authentication, Reporting &amp; Conformance\uff09\u8a8d\u8a3c\u5931\u6557\u6642\u306e\u30dd\u30ea\u30b7\u30fc\u3068\u30ec\u30dd\u30fc\u30c8<\/h3>\n<p>DMARC\u306f\u3001SPF\u3068DKIM\u306e\u8a8d\u8a3c\u7d50\u679c\u306b\u57fa\u3065\u3044\u3066\u3001<\/p>\n<p>\u300c\u3082\u3057SPF\u3084DKIM\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u3089\u3001\u3053\u306e\u30e1\u30fc\u30eb\u3092\u3069\u3046\u6271\u3046\u304b\uff1f\u300d<\/p>\n<p>\u3068\u3044\u3046\u65b9\u91dd\u3092\u5b9a\u7fa9\u3057\u3001\u3055\u3089\u306b\u8a8d\u8a3c\u7d50\u679c\u306e\u30ec\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u53d6\u308c\u308b\u3088\u3046\u306b\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<h4>\u8eab\u5206\u8a3c\u660e\u66f8\u3068\u3057\u3066\u306e\u5f79\u5272\uff1aDMARC<\/h4>\n<p>\u3053\u308c\u306f\u3001<\/p>\n<blockquote><p>\u300c\u79c1\u306e\u8eab\u5206\u8a3c\u660e\u66f8\uff08SPF\u30fbDKIM\uff09\u304c\u3082\u3057\u507d\u7269\u3060\u3068\u5224\u65ad\u3055\u308c\u305f\u3089\u3001\u305d\u306e\u30e1\u30fc\u30eb\u306f\u7834\u68c4\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u305d\u3057\u3066\u3001\u8ab0\u304c\u3069\u3093\u306a\u507d\u306e\u8a3c\u660e\u66f8\u3092\u4f7f\u304a\u3046\u3068\u3057\u305f\u304b\u3001\u79c1\u306b\u5831\u544a\u3057\u3066\u304f\u3060\u3055\u3044\u306d\u300d<\/p><\/blockquote>\n<p>\u3068\u3001\u3042\u3089\u304b\u3058\u3081\u30eb\u30fc\u30eb\u3092\u6c7a\u3081\u3066\u304a\u304f\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>DMARC\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u78ba\u5b9f\u306b\u6392\u9664\u3057\u3001\u3055\u3089\u306b\u8a8d\u8a3c\u5931\u6557\u306e\u72b6\u6cc1\u3092\u628a\u63e1\u3057\u3066\u5bfe\u7b56\u3092\u8b1b\u3058\u308b\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n  <div class=\"blogcard\">\n  <a href=\"https:\/\/blastmail.jp\/blog\/spam\/dmarc-mail\">\n   <div class=\"blogcard_thumbnail\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2020\/07\/DMARC.png\" alt=\"DMARC\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u30fb\u8a2d\u5b9a\u65b9\u6cd5\u30fbBIMI\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u30102026\u5e74\u6700\u65b0\u3011\" width=\"90\" height=\"47\" \/><\/div>\n   <div class=\"blogcard_content\">\n    <div class=\"blogcard_title\">DMARC\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u30fb\u8a2d\u5b9a\u65b9\u6cd5\u30fbBIMI\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u30102026\u5e74\u6700\u65b0\u3011<\/div>\n    <div class=\"blogcard_excerpt\">\u30e1\u30fc\u30eb\u914d\u4fe1\u306e\u73fe\u5834\u3067\u300cDMARC\u300d\u3068\u3044\u3046\u8a00\u8449\u3092\u76ee\u306b\u3059\u308b\u6a5f\u4f1a\u304c\u5897\u3048\u3066\u3044\u307e\u3059\u3002SPF\u3084DKIM\u3068\u4e26\u3079\u3066\u8a9e\u3089\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u3082\u306e\u306e\u3001\u3053\u306e3\u3064\u304c\u3069\u3046\u9055\u3044\u3001D\u2026<\/div>\n   <\/div>\n   <div class=\"clear\"><\/div>\n  <\/a>\n  <\/div>\n<h2>\u6b21\u4e16\u4ee3\u306e\u8a8d\u8a3c\u6280\u8853\u3010BIMI\u3068ARC\u3011<\/h2>\n<p>\u8fd1\u5e74\u3067\u306f\u3001\u4e0a\u8a18\u306e3\u3064\u306b\u52a0\u3048\u3066\u3001\u3055\u3089\u306b\u9ad8\u5ea6\u306a\u30e1\u30fc\u30eb\u8a8d\u8a3c\u6280\u8853\u304c\u767b\u5834\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>BIMI\uff08Brand Indicators for Message Identification\uff09<\/h3>\n<p>\u30e1\u30fc\u30eb\u8a8d\u8a3c\u3092\u30d1\u30b9\u3057\u305f\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u306b\u3001\u30d6\u30e9\u30f3\u30c9\u30ed\u30b4\u3092\u8868\u793a\u3055\u305b\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u53d7\u4fe1\u8005\u306f\u4e00\u76ee\u3067\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u3060\u3068\u5224\u65ad\u3067\u304d\u3001\u4fe1\u983c\u6027\u304c\u3055\u3089\u306b\u5411\u4e0a\u3057\u307e\u3059\u3002Google\u306f2024\u5e749\u6708\u304b\u3089\u3001\u5546\u6a19\u767b\u9332\u3092\u6301\u305f\u306a\u3044\u30ed\u30b4\u3067\u3082\u5bfe\u5fdc\u3092\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<h3>ARC\uff08Authenticated Received Chain\uff09<\/h3>\n<p>\u30e1\u30fc\u30eb\u304c\u8ee2\u9001\u3055\u308c\u305f\u5834\u5408\u3067\u3082\u3001\u9014\u4e2d\u3067\u8a8d\u8a3c\u60c5\u5831\u304c\u5931\u308f\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u306e\u6280\u8853\u3067\u3059\u3002\u8ee2\u9001\u30b5\u30fc\u30d0\u30fc\u306b\u3088\u3063\u3066\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u304c\u5909\u66f4\u3055\u308c\u3066\u3082\u3001\u5143\u306e\u8a8d\u8a3c\u60c5\u5831\u3092\u7dad\u6301\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u306e\u6280\u8853\u3082\u3001\u5c06\u6765\u7684\u306b\u306f\u30e1\u30fc\u30eb\u5230\u9054\u306b\u4e0d\u53ef\u6b20\u306a\u8981\u7d20\u3068\u306a\u3063\u3066\u3044\u304f\u3067\u3057\u3087\u3046\u3002<\/p>\n<h2>\u5c02\u9580\u77e5\u8b58\u304c\u306a\u304f\u3066\u3082\u5927\u4e08\u592b\uff01\u5916\u6ce8\u3057\u3066\u3067\u3082\u8a2d\u5b9a\u3059\u3079\u304d\u7406\u7531<\/h2>\n<p>\u300cSPF\u3001DKIM\u3001DMARC..\u96e3\u3057\u305d\u3046..\u3002\u300d<\/p>\n<p>\u3068\u611f\u3058\u308b\u65b9\u3082\u3044\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3053\u308c\u3089\u306e\u8a2d\u5b9a\u306f\u3001DNS\uff08Domain Name 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