{"id":15649,"date":"2024-06-27T16:39:48","date_gmt":"2024-06-27T07:39:48","guid":{"rendered":"https:\/\/blastmail.jp\/blog\/?p=15649"},"modified":"2026-02-18T10:33:15","modified_gmt":"2026-02-18T01:33:15","slug":"dkim-setting","status":"publish","type":"post","link":"https:\/\/blastmail.jp\/blog\/spam\/dkim-setting","title":{"rendered":"DKIM\u306e\u8a2d\u5b9a\u65b9\u6cd5\u3068\u6ce8\u610f\u70b9\u3092\u89e3\u8aac\uff01\u30e1\u30fc\u30eb\u306e\u5230\u9054\u7387\u30fb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5411\u4e0a\u3055\u305b\u308b\u79d8\u8a23\u3068\u306f\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" class=\"alignnone size-full wp-image-15655\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2024\/06\/dkim-setting-1.png\" alt=\"\" width=\"712\" height=\"498\" \/><\/p>\n<p><span style=\"font-weight: 400;\">\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u3092\u78ba\u4fdd\u3057\u3001\u53d7\u4fe1\u8005\u306b\u5b89\u5fc3\u3057\u3066\u30e1\u30fc\u30eb\u3092\u53d7\u3051\u53d6\u3063\u3066\u3082\u3089\u3046\u305f\u3081\u306b\u306f\u3001DKIM\uff08DomainKeys Identified Mail\uff09\u306e\u8a2d\u5b9a\u304c\u6b20\u304b\u305b\u307e\u305b\u3093\u3002<\/span><span style=\"font-weight: 400;\"><strong>\u8ff7\u60d1\u30e1\u30fc\u30eb\u3084\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30e1\u30fc\u30eb\u306a\u3069\u304c\u5897\u52a0\u3057\u3066\u3044\u308b\u73fe\u4ee3\u306b\u304a\u3044\u3066\u3001DKIM\u306e\u3088\u3046\u306a\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u306e\u5fc5\u8981\u6027\u306f\u5897\u3057\u3066\u3044\u307e\u3059<\/strong>\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u307e\u305f\u30012024\u5e742\u6708\u306bGoogle\u304c\u6539\u8a02\u3092\u884c\u3063\u305f\u300c\u9001\u4fe1\u8005\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u300d\u306f\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u696d\u52d9\u306e\u62c5\u5f53\u8005\u3067\u3042\u308c\u3070\u3054\u5b58\u77e5\u306e\u65b9\u3082\u591a\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002\u305d\u306e\u5185\u5bb9\u306e\u3072\u3068\u3064\u306b\u30011\u65e5\u306b5,000\u4ef6\u3092\u8d85\u3048\u308b\u30e1\u30fc\u30eb\u914d\u4fe1\u3092\u884c\u3046\u5834\u5408\u306f\u3001SPF\u30fbDKIM\u30fbDMARC\u3092\u5168\u3066\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3068\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u3057\u304b\u3057\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u3084\u30e1\u30eb\u30de\u30ac\u914d\u4fe1\u3092\u62c5\u5f53\u3057\u3066\u3044\u3066\u3082\u3053\u308c\u3089\u306e\u8a8d\u8a3c\u6280\u8853\u306e\u8a73\u7d30\u3084\u8a2d\u5b9a\u65b9\u6cd5\u3092\u77e5\u3089\u306a\u3044\u65b9\u3082\u591a\u304f\u3001\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u304b\u5206\u304b\u3089\u306a\u3044\u3068\u534a\u3070\u8ae6\u3081\u304b\u3051\u3066\u3057\u307e\u3063\u3066\u3044\u308b\u4eba\u3082\u591a\u304f\u3044\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u305d\u3053\u3067\u672c\u8a18\u4e8b\u3067\u306f\u3001DKIM\u306e\u57fa\u672c\u7684\u306a\u6982\u8981\u304b\u3089\u305d\u306e\u4ed5\u7d44\u307f\u3001\u305d\u3057\u3066\u5177\u4f53\u7684\u306a\u8a2d\u5b9a\u65b9\u6cd5\u307e\u3067\u3092\u4e01\u5be7\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002\u305c\u3072\u3054\u4e00\u8aad\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n<p><a href=\"https:\/\/blastmail.jp\/\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2023\/01\/bm_banner_big_mailsystem_1200x628.png\" alt=\"blastmail\u306e\u30d0\u30ca\u30fc\" width=\"1200\" height=\"629\" class=\"alignnone wp-image-19829 size-full\" \/><\/a><\/p>\n<h2><b>DKIM\u306e\u6982\u8981<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">DKIM\uff08DomainKeys Identified Mail\uff09\u306f\u3001\u9001\u4fe1\u8005\u304c\u767a\u884c\u3057\u305f\u96fb\u5b50\u7f72\u540d\u3092\u5143\u306b\u3001\u53d7\u4fe1\u5148\u3067\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u3084\u6539\u3056\u3093\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u8a8d\u8a3c\u6280\u8853\u3067\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u3053\u306e\u6280\u8853\u306f\u3001\u30e1\u30fc\u30eb\u304c\u672c\u5f53\u306b\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u6240\u6709\u8005\u304b\u3089\u9001\u4fe1\u3055\u308c\u305f\u3082\u306e\u3067\u3042\u308b\u3053\u3068\u3092\u8a3c\u660e\u3057\u3001\u6539\u3056\u3093\u304c\u884c\u308f\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/span><\/p>\n<div class=\"box01\"><span class=\"box-title\">\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u8ab2\u984c<\/span>\n<ul>\n<li>\u306a\u308a\u3059\u307e\u3057\uff1a\u96fb\u5b50\u30e1\u30fc\u30eb\u306f\u305d\u306e\u8a2d\u8a08\u4e0a\u3001\u9001\u4fe1\u8005\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u7c21\u5358\u306b\u507d\u88c5\u3067\u304d\u308b\u305f\u3081\u3001\u306a\u308a\u3059\u307e\u3057\u304c\u983b\u7e41\u306b\u767a\u751f\u3057\u3066\u3044\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u653b\u6483\u3084\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u304c\u591a\u767a\u3057\u3001\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u304c\u4f4e\u4e0b\u3057\u3066\u3044\u305f<\/li>\n<li>\u30e1\u30fc\u30eb\u306e\u6539\u3056\u3093\uff1a\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u3055\u308c\u305f\u5f8c\u3001\u9014\u4e2d\u306e\u30b5\u30fc\u30d0\u30fc\u3067\u5185\u5bb9\u304c\u6539\u3056\u3093\u3055\u308c\u308b\u30ea\u30b9\u30af\u3082\u5b58\u5728\u3057\u307e\u3057\u305f\u3002\u6539\u3056\u3093\u3055\u308c\u305f\u30e1\u30fc\u30eb\u304c\u53d7\u4fe1\u8005\u306b\u5c4a\u304f\u3068\u3001\u60c5\u5831\u306e\u4fe1\u983c\u6027\u304c\u640d\u306a\u308f\u308c\u308b<\/li>\n<\/ul>\n<\/div>\n<p><span style=\"font-weight: 400;\">DKIM\u306f\u3053\u306e\u3088\u3046\u306a\u30e1\u30fc\u30eb\u306b\u7f6e\u3051\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u8ab2\u984c\u3092\u89e3\u6c7a\u3067\u304d\u308b\u306e\u3067\u3059\u3002<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">DKIM\u304c\u751f\u307e\u308c\u305f\u80cc\u666f<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">DKIM\u306e\u539f\u578b\u3068\u306a\u308b\u6280\u8853\u306f2007\u5e74\u306b\u767a\u660e\u3055\u308c\u30012013\u5e74\u306b\u306f\u73fe\u5728\u306e\u6a19\u6e96\u3068\u306a\u308bDKIM\uff08STD76\uff09\u304c\u958b\u767a\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u306e\u6280\u8853\u304c\u30e1\u30fc\u30eb\u914d\u4fe1\u306b\u4f7f\u308f\u308c\u308b\u3088\u3046\u306b\u306a\u308b\u3053\u3068\u3067\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u3084\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u306e\u6570\u306f\u4e00\u6642\u7684\u306b\u6e1b\u5c11\u3057\u307e\u3057\u305f\u304c\u30012020\u5e74\u9803\u306b\u306f\u518d\u3073\u5897\u52a0\u50be\u5411\u304c\u898b\u3089\u308c\u307e\u3057\u305f\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u8ff7\u60d1\u30e1\u30fc\u30eb\u3084\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u8a50\u6b3a\u306e\u4e00\u90e8\u306f\u3001\u5b9f\u5728\u3059\u308b\u4f01\u696d\u3068\u540c\u3058\u30c9\u30e1\u30a4\u30f3\u3092\u5229\u7528\u3057\u3066\u30e6\u30fc\u30b6\u30fc\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u305f\u3081\u3001\u53d7\u4fe1\u8005\u304c\u507d\u88c5\u30e1\u30fc\u30eb\u3092\u672c\u7269\u3068\u8aa4\u8a8d\u3057\u3066\u3057\u307e\u3046\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002DKIM\u306f\u3001\u9001\u4fe1\u5143\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304c\u507d\u88c5\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u8a3c\u660e\u3057\u3001\u3053\u3046\u3057\u305f\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u3078\u306e\u5bfe\u7b56\u3068\u3057\u3066\u6709\u52b9\u3067\u3059\u3002<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">DKIM\u306e\u5f79\u5272<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">DKIM\u306f\u8ff7\u60d1\u30e1\u30fc\u30eb\u306e\u5bfe\u7b56\u3068\u3057\u3066\u306e\u5f79\u5272\u3060\u3051\u3067\u306a\u304f\u3001\u9001\u4fe1\u5143\u306e\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u30b9\u30b3\u30a2\u306b\u3082\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u30b9\u30b3\u30a2\u3068\u306f\u3001IP\u30a2\u30c9\u30ec\u30b9\u306e\u4fe1\u7528\u5ea6\u3092\u30b9\u30b3\u30a2\u5316\u3057\u305f\u3082\u306e\u3067\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u306e\u5834\u5408\u306f\u904e\u53bb\u306e\u914d\u4fe1\u5b9f\u7e3e\u3084\u672c\u6587\u4e2d\u306b\u542b\u307e\u308c\u308b\u30b9\u30d1\u30e0\u30ad\u30fc\u30ef\u30fc\u30c9\u306a\u3069\u304c\u5f71\u97ff\u3057\u307e\u3059\u3002\u3053\u306e\u30b9\u30b3\u30a2\u304c\u60aa\u5316\u3059\u308b\u3068\u3001\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u304c\u53d6\u5f15\u5148\u3084\u304a\u5ba2\u69d8\u306b\u5c4a\u304d\u306b\u304f\u304f\u306a\u308a\u3001\u696d\u52d9\u52b9\u7387\u304c\u4f4e\u4e0b\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u7279\u306b\u3001\u30e1\u30fc\u30eb\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u3092\u884c\u3063\u3066\u3044\u308b\u4f01\u696d\u306b\u3068\u3063\u3066\u3001\u30e1\u30fc\u30eb\u306e\u5230\u9054\u7387\u306b\u5f71\u97ff\u3059\u308b\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u30b9\u30b3\u30a2\u306e\u60aa\u5316\u306f\u3001\u65bd\u7b56\u52b9\u679c\u306b\u76f4\u7d50\u3059\u308b\u91cd\u5927\u306a\u554f\u984c\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30d3\u30b8\u30cd\u30b9\u3067\u4f7f\u7528\u3059\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3084\u30c9\u30e1\u30a4\u30f3\u306f\u3001\u78ba\u5b9f\u306b\u76f8\u624b\u306e\u53d7\u4fe1\u30dc\u30c3\u30af\u30b9\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304f\u3088\u3046\u306b\u3001\u9069\u5207\u306a\u7ba1\u7406\u3068DKIM\u306e\u8a2d\u5b9a\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u3053\u306e\u3088\u3046\u306b\u3001DKIM\u306f\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u3092\u9ad8\u3081\u3001\u30d3\u30b8\u30cd\u30b9\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u54c1\u8cea\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u306a\u6280\u8853\u3067\u3059\u3002<\/span><\/p>\n<h2><b>DKIM\u306e\u4ed5\u7d44\u307f<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">DKIM\u306e\u4ed5\u7d44\u307f\u306f\u3001\u516c\u958b\u9375\u6697\u53f7\u65b9\u5f0f\u3092\u5229\u7528\u3057\u3066\u30e1\u30fc\u30eb\u306e\u771f\u6b63\u6027\u3092\u4fdd\u8a3c\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u9001\u4fe1\u8005\u5074\u306f\u3001\u30e1\u30fc\u30eb\u306e\u672c\u6587\u3068\u4e00\u90e8\u306e\u30d8\u30c3\u30c0\u30fc\u60c5\u5831\u3092\u57fa\u306b\u30cf\u30c3\u30b7\u30e5\u5024\u3092\u751f\u6210\u3057\u3001\u305d\u308c\u3092\u79d8\u5bc6\u9375\u3067\u6697\u53f7\u5316\u3057\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u3053\u306e\u6697\u53f7\u5316\u3055\u308c\u305f\u30cf\u30c3\u30b7\u30e5\u5024\u304c\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u3068\u306a\u308a\u3001\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u30fc\u306b\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002\u53d7\u4fe1\u8005\u5074\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u9001\u4fe1\u8005\u306eDNS\u304b\u3089\u516c\u958b\u9375\u3092\u53d6\u5f97\u3057\u3001\u3053\u306e\u7f72\u540d\u3092\u5fa9\u53f7\u3057\u3066\u30cf\u30c3\u30b7\u30e5\u5024\u3092\u691c\u8a3c\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001<strong><span style=\"color: #ff0000;\">\u30e1\u30fc\u30eb\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u306e\u6b63\u5f53\u6027\u3092\u78ba\u8a8d\u3057\u307e\u3059<\/span><\/strong>\u3002<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">DKIM\u8a8d\u8a3c\u306e\u6d41\u308c<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">DKIM\u304c\u8a8d\u8a3c\u3055\u308c\u308b\u307e\u3067\u306f\u4ee5\u4e0b\u306e\u30b9\u30c6\u30c3\u30d7\u304c\u5fc5\u8981\u3068\u306a\u308a\u307e\u3059\u3002<\/span><\/p>\n<div class=\"list04\">\n<ul>\n<li>\u9001\u4fe1\u5143\u3067\u300c\u79d8\u5bc6\u9375\u300d\u3068\u300c\u516c\u958b\u9375\u300d\u3092\u7528\u610f\u3059\u308b\uff08\u3053\u306e\u969b\u300c\u516c\u958b\u9375\u300d\u306fDNS\u30b5\u30fc\u30d0\u306b\u516c\u958b\u3055\u308c\u308b\uff09<\/li>\n<li>\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u6642\u306b\u300c\u79d8\u5bc6\u9375\u300d\u3092\u4f7f\u3044\u96fb\u5b50\u7f72\u540d\u3092\u4ed8\u52a0\u3059\u308b<\/li>\n<li>\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u5074\u306fDNS\u30b5\u30fc\u30d0\u304b\u3089\u300c\u516c\u958b\u9375\u300d\u3092\u53d6\u5f97\u3059\u308b<\/li>\n<li>\u9001\u4fe1\u5143\u306e\u300c\u79d8\u5bc6\u9375\u300d\u3068\u3042\u3089\u304b\u3058\u3081DNS\u30b5\u30fc\u30d0\u3042\u308b\u300c\u516c\u958b\u9375\u300d\u304c\u4e00\u81f4\u3059\u308b<\/li>\n<li>\u30e1\u30fc\u30eb\u306b\u4ed8\u52a0\u3055\u308c\u3066\u3044\u308b\u96fb\u5b50\u7f72\u540d\u306e\u7167\u5408\u3092\u884c\u3046<\/li>\n<\/ul>\n<\/div>\n<p><span style=\"font-weight: 400;\">\u300c\u79d8\u5bc6\u9375\u300d\u3068\u300c\u516c\u958b\u9375\u300d\u306f\u5404\u30c9\u30e1\u30a4\u30f3\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u3066\u304a\u308a\u3001\u9001\u4fe1\u5143\u306e\u79d8\u5bc6\u9375\u306f\u9001\u4fe1\u5143\u304cDNS\u30b5\u30fc\u30d0\u306b\u516c\u958b\u3057\u305f\u516c\u958b\u9375\u306b\u3057\u304b\u4e00\u81f4\u3057\u307e\u305b\u3093\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u30e1\u30fc\u30eb\u306e\u672c\u6587\u3067\u8868\u793a\u3055\u308c\u308b\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3084\u30c9\u30e1\u30a4\u30f3\u540d\u304c\u4e00\u81f4\u3057\u3066\u3044\u3066\u3082\u3001\u9001\u4fe1\u5143\u306e\u30b5\u30fc\u30d0\u30fc\u304c\u9055\u3046\u3053\u3068\u304c\u8a3c\u660e\u3055\u308c\u308b\u3068\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u3057\u3066\u51e6\u7406\u3055\u308c\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u307e\u305f\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u306e\u904e\u7a0b\u3067\u7b2c\u4e09\u8005\u306b\u3088\u308a\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u3092\u66f8\u304d\u63db\u3048\u3089\u308c\u308b\u300c\u6539\u3056\u3093\u300d\u3082\u3001DKIM\u306e\u4f7f\u7528\u3067\u5bfe\u7b56\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<h2><b>DKIM\u3092\u8a2d\u5b9a\u3059\u308b\u30e1\u30ea\u30c3\u30c8<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">DKIM\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u5f97\u3089\u308c\u308b\u30e1\u30ea\u30c3\u30c8\u306f\u591a\u5c90\u306b\u308f\u305f\u308a\u307e\u3059\u3002\u307e\u305a\u3001\u30e1\u30fc\u30eb\u306e\u5230\u9054\u7387\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002DKIM\u7f72\u540d\u304c\u3042\u308b\u3053\u3068\u3067\u3001\u53d7\u4fe1\u5074\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306f\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u3092\u8a55\u4fa1\u3057\u3084\u3059\u304f\u306a\u308a\u3001\u30b9\u30d1\u30e0\u30d5\u30a3\u30eb\u30bf\u30fc\u306b\u304b\u304b\u308b\u30ea\u30b9\u30af\u304c\u6e1b\u5c11\u3057\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u307e\u305f\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u8a50\u6b3a\u306e\u9632\u6b62\u306b\u3082\u52b9\u679c\u7684\u3067\u3059\u3002\u6b63\u5f53\u306a\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u306e\u30e1\u30fc\u30eb\u3067\u3042\u308b\u3053\u3068\u304c\u8a3c\u660e\u3055\u308c\u308b\u305f\u3081\u3001\u53d7\u4fe1\u8005\u304c\u5b89\u5fc3\u3057\u3066\u30e1\u30fc\u30eb\u3092\u958b\u5c01\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u4f01\u696d\u306e\u30d6\u30e9\u30f3\u30c9\u30a4\u30e1\u30fc\u30b8\u5411\u4e0a\u306b\u3082\u5bc4\u4e0e\u3057\u307e\u3059\u3002<\/span><\/p>\n<h3><b>DKIM<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">DKIM\u306f\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u6280\u8853\u3067\u3059\u3002\u3053\u3053\u307e\u3067\u306e\u89e3\u8aac\u3067\u3082\u89e6\u308c\u3066\u304d\u307e\u3057\u305f\u304c\u3001DKIM\u3092\u6d3b\u7528\u3059\u308b\u30e1\u30ea\u30c3\u30c8\u306b\u3064\u3044\u3066\u307e\u3068\u3081\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/span><\/p>\n<div class=\"list04\">\n<ul>\n<li>\u306a\u308a\u3059\u307e\u3057\u30fb\u6539\u3056\u3093\u306e\u5bfe\u7b56\uff1aDKIM\u306f\u3001\u9001\u4fe1\u5143\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u6b63\u5f53\u3067\u3042\u308b\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b\u305f\u3081\u3001\u306a\u308a\u3059\u307e\u3057\u3084\u6539\u3056\u3093\u3092\u9632\u6b62\u3057\u307e\u3059\u3002\u9001\u4fe1\u5143\u306e\u30b5\u30fc\u30d0\u30fc\u304c\u79d8\u5bc6\u9375\u3067\u7f72\u540d\u3092\u884c\u3044\u3001\u53d7\u4fe1\u5074\u304c\u516c\u958b\u9375\u3067\u305d\u306e\u7f72\u540d\u3092\u691c\u8a3c\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30fc\u30eb\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/li>\n<li>\u30b9\u30d1\u30e0\u3084\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u306e\u6e1b\u5c11\uff1aDKIM\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u8a50\u6b3a\u3084\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u306e\u30ea\u30b9\u30af\u304c\u6e1b\u5c11\u3057\u307e\u3059\u3002DKIM\u7f72\u540d\u304c\u3042\u308b\u30e1\u30fc\u30eb\u306f\u3001\u53d7\u4fe1\u5074\u306e\u30b9\u30d1\u30e0\u30d5\u30a3\u30eb\u30bf\u30fc\u3067\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u5224\u5b9a\u3055\u308c\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u5230\u9054\u7387\u306e\u6539\u5584\uff1aDKIM\u7f72\u540d\u304c\u4ed8\u4e0e\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306f\u3001\u76f8\u624b\u306e\u53d7\u4fe1\u30dc\u30c3\u30af\u30b9\u3067\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u5224\u5225\u3055\u308c\u308b\u78ba\u7387\u304c\u4f4e\u4e0b\u3059\u308b\u305f\u3081\u3001\u5230\u9054\u7387\u306e\u6539\u5584\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/div>\n<p><span style=\"font-weight: 400;\">\u307e\u305f\u3001\u672c\u8a18\u4e8b\u306e\u5192\u982d\u3067\u3082\u7d39\u4ecb\u3057\u305f\u3088\u3046\u306bGoogle\u304c\u9001\u4fe1\u8005\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3092\u5f37\u5316\u3057\u3066\u3044\u308b\u306e\u3068\u540c\u6642\u306bYahoo!\u30e1\u30fc\u30eb\u306a\u3069\u3082\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5f37\u5316\u3092\u9032\u3081\u3066\u3044\u305f\u308a\u3057\u307e\u3059\u3002<\/span><\/p>\n<h3><b>SPF<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">SPF\uff08Sender Policy Framework\uff09\u306f\u3001DNS\u3092\u4f7f\u3044\u9001\u4fe1\u5143\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u6b63\u5f53\u306a\u3082\u306e\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u8a8d\u8a3c\u6280\u8853\u3067\u3059\u3002DNS\uff08Domain Name System\uff09\u306f\u3001\u30a6\u30a7\u30d6\u4e0a\u3067\u30c9\u30e1\u30a4\u30f3\u540d\u3068IP\u30a2\u30c9\u30ec\u30b9\u3092\u7d10\u3065\u3051\u3066\u3001\u7ba1\u7406\u30fb\u904b\u7528\u3092\u884c\u3046\u30b7\u30b9\u30c6\u30e0\u3067\u3059\u3002<\/span><\/p>\n<div class=\"box01\"><span class=\"box-title\">DNS\uff08Domain Name System\uff09\u3068\u306f<\/span>\u30a6\u30a7\u30d6\u4e0a\u3067\u30c9\u30e1\u30a4\u30f3\u540d\u3068IP\u30a2\u30c9\u30ec\u30b9\u3092\u7d10\u3065\u3051\u3066\u3001\u7ba1\u7406\u30fb\u904b\u7528\u3092\u884c\u3046\u30b7\u30b9\u30c6\u30e0<\/div>\n<p><span style=\"font-weight: 400;\">\u53d7\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u7d10\u3065\u3044\u3066\u3044\u308bIP\u30a2\u30c9\u30ec\u30b9\u3092\u9001\u4fe1\u5143\u306eDNS\u306b\u554f\u3044\u5408\u308f\u305b\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u306e\u904e\u7a0b\u3067\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u304c\u767a\u751f\u3057\u3066\u3044\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u304c\u6b63\u5f53\u306a\u9001\u4fe1\u8005\u304b\u3089\u306e\u3082\u306e\u3067\u3042\u308b\u304b\u3092\u78ba\u304b\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u305f\u3060\u3057\u3001SPF\u304c\u30c1\u30a7\u30c3\u30af\u3067\u304d\u308b\u306e\u306f\u9001\u4fe1\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306e\u30c9\u30e1\u30a4\u30f3\u3068\u7d10\u3065\u3044\u3066\u3044\u308bIP\u30a2\u30c9\u30ec\u30b9\u3060\u3051\u3067\u3042\u308a\u3001\u30e1\u30fc\u30eb\u306e\u672c\u6587\u3084\u30d8\u30c3\u30c0\u30fc\u306e\u6539\u3056\u3093\u3092\u9632\u3050\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002SPF\u306f\u9001\u4fe1\u8005\u306e\u6b63\u5f53\u6027\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u30c4\u30fc\u30eb\u3067\u3059\u304c\u3001\u5b8c\u5168\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3068\u3057\u3066\u306fDKIM\u3084DMARC\u3068\u4f75\u7528\u3059\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002<\/span><\/p>\n<h3><b>DMARC<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">DMARC(Domain-based Message Authentication Reporting and Conformance\uff09\u306f\u3001DKIM\u3068SPF\u3092\u88dc\u5b8c\u3059\u308b\u5f62\u3067\u8a2d\u8a08\u3055\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3067\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u672c\u8a18\u4e8b\u3067\u306f\u8a73\u3057\u3044\u89e3\u8aac\u306f\u907f\u3051\u307e\u3059\u304c\u3001 DMARC\u306e\u5f79\u5272\u306fDKIM\u3084SPF\u306b\u3088\u3063\u3066\u8a8d\u8a3c\u304c\u3067\u304d\u306a\u304b\u3063\u305f\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u9001\u4ed8\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306e\u6271\u3044\u3092\u6c7a\u3081\u308b\u3053\u3068\u3067\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">DMARC\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u304c\u3067\u304d\u306a\u304b\u3063\u305f\u30e1\u30fc\u30eb\u306b\u3064\u3044\u3066\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u53d6\u308a\u6271\u3044\u3092\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<div class=\"list04\">\n<ul>\n<li>\u9694\u96e2\uff1a\u9694\u96e2\u30d5\u30a9\u30eb\u30c0\u306b\u79fb\u52d5<\/li>\n<li>\u62d2\u5426\uff1a\u30e1\u30fc\u30eb\u3092\u914d\u4fe1\u3057\u306a\u3044<\/li>\n<li>\u306a\u3057\uff1a\u30e1\u30fc\u30eb\u306f\u914d\u4fe1\u3055\u308c\u308b\u304c\u3001\u51e6\u7406\u65b9\u6cd5\u3092\u9078\u629e\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/div>\n<p><span style=\"font-weight: 400;\">\u3053\u308c\u306b\u3088\u308a\u3001\u30c9\u30e1\u30a4\u30f3\u6240\u6709\u8005\u306f\u30e1\u30fc\u30eb\u306e\u8a8d\u8a3c\u30dd\u30ea\u30b7\u30fc\u3092\u67d4\u8edf\u306b\u8a2d\u5b9a\u3057\u3001\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/span><span style=\"font-weight: 400;\">DMARC\u306e\u8a73\u7d30\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u4f75\u305b\u3066\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n<p>\u95a2\u9023\u8a18\u4e8b\uff1a<a href=\"https:\/\/blastengine.jp\/blog_content\/dmarc\/\" target=\"_blank\" rel=\"noopener\">DMARC\u3068\u306f\uff1f\u30e1\u30ea\u30c3\u30c8\u3084\u8a2d\u5b9a\u65b9\u6cd5\u3001DMARC\u30ec\u30dd\u30fc\u30c8\u306e\u8aad\u307f\u65b9\u306b\u3064\u3044\u3066\u5fb9\u5e95\u89e3\u8aac<\/a><\/p>\n<h2><b>DKIM\u306e\u8a2d\u5b9a\u65b9\u6cd5<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Gmail\u3084Outlook\u306a\u3069\u3067\u306f\u3001\u8a2d\u5b9a\u6b21\u7b2c\u3067\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u63d0\u4f9b\u3057\u3066\u3044\u308bDKIM\u3092\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u4f8b\u3048\u3070\u3001Gmail\u3067\u306fGoogle Workspace\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u53d6\u5f97\u3057\u3001TXT\u30ec\u30b3\u30fc\u30c9\u3068DKIM\u9375\u3092\u30c9\u30e1\u30a4\u30f3\u306b\u7d10\u4ed8\u3051\u308b\u3053\u3068\u3067\u3001DKIM\u3092\u4f7f\u3063\u305f\u30e1\u30fc\u30eb\u306e\u9001\u53d7\u4fe1\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002TXT\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u60c5\u5831\u3092DNS\u306b\u767b\u9332\u3059\u308b\u969b\u306b\u4f7f\u308f\u308c\u308b\u30c6\u30ad\u30b9\u30c8\u30ec\u30b3\u30fc\u30c9\u3067\u3001\u4e3b\u306b\u30c9\u30e1\u30a4\u30f3\u306e\u6240\u6709\u8005\u3092\u8a3c\u660e\u3059\u308b\u969b\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002<\/span><\/p>\n<div class=\"box01\"><span class=\"box-title\">TXT\u30ec\u30b3\u30fc\u30c9 \u3068\u306f<\/span>\u30c9\u30e1\u30a4\u30f3\u60c5\u5831\u3092DNS\u306b\u767b\u9332\u3059\u308b\u969b\u306b\u4f7f\u308f\u308c\u308b\u30c6\u30ad\u30b9\u30c8\u30ec\u30b3\u30fc\u30c9\u3002\u4e3b\u306b\u30c9\u30e1\u30a4\u30f3\u306e\u6240\u6709\u8005\u3092\u8a3c\u660e\u3059\u308b\u969b\u306b\u4f7f\u308f\u308c\u308b<\/div>\n<p><span style=\"font-weight: 400;\">\u3057\u304b\u3057\u3001Google Workspace\u3092\u4f7f\u3063\u3066\u3044\u306a\u3044\u5834\u5408\u3084\u3001\u305d\u306e\u4ed6\u306e\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\uff08\u30a6\u30a7\u30d6\u30e1\u30fc\u30eb\uff09\u3092\u4f7f\u3063\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306eDKIM\u3092\u5229\u7528\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002DKIM\u306e\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\uff08OSS\uff09\u306b\u306f\u300cRspamd\u300d\u3084\u300cOpenDKIM\u300d\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002\u4eca\u56de\u306fOpenDKIM\u3092\u5c0e\u5165\u3059\u308b\u969b\u306e\u6982\u8981\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">EPEL\u30ec\u30dd\u30b8\u30c8\u30ea\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\uff1aEPEL\uff08Extra Packages for Enterprise Linux\uff09\u30ec\u30dd\u30b8\u30c8\u30ea\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">OpenDKIM\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\uff1aOpenDKIM\u3092EPEL\u30ec\u30dd\u30b8\u30c8\u30ea\u304b\u3089\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u30ad\u30fc\u30da\u30a2\uff08\u79d8\u5bc6\u9375\u3068\u516c\u958b\u9375\uff09\u3092\u4f5c\u6210\u3059\u308b\uff1a\u79d8\u5bc6\u9375\u3068\u516c\u958b\u9375\u306e\u30da\u30a2\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">DNS\u306e\u8a2d\u5b9a\u3092\u884c\u3046\uff1a\u4f5c\u6210\u3057\u305f\u516c\u958b\u9375\u3092DNS\u306eTXT\u30ec\u30b3\u30fc\u30c9\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u8a73\u3057\u3044\u5185\u5bb9\u306f\u7701\u7565\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u3069\u306e\u5de5\u7a0b\u306b\u3082\u30b3\u30de\u30f3\u30c9\u5165\u529b\u306a\u3069\u306e\u5c02\u9580\u7684\u306a\u4f5c\u696d\u304c\u5fc5\u8981\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u793e\u5185\u306b\u6280\u8853\u7684\u306a\u30ea\u30bd\u30fc\u30b9\u304c\u306a\u3044\u5834\u5408\u306f\u3001OSS\u3092\u6d3b\u7528\u3057\u3066\u3082\u81ea\u529b\u3067DKIM\u306e\u8a2d\u5b9a\u3092\u884c\u3046\u3053\u3068\u306f\u96e3\u3057\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u305d\u306e\u5834\u5408\u306f\u3001\u5f8c\u8ff0\u3059\u308b\u300c\u30e1\u30fc\u30eb\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u300d\u306a\u3069\u3092\u6d3b\u7528\u3057\u3001\u81ea\u793e\u306e\u30e1\u30fc\u30eb\u30a4\u30f3\u30d5\u30e9\u3092\u6b8b\u3057\u3064\u3064DKIM\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8981\u4ef6\u306e\u6574\u5099\u3092\u884c\u3044\u307e\u3057\u3087\u3046\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u3088\u308a\u8a73\u3057\u3044DKIM\u306e\u8a2d\u5b9a\u65b9\u6cd5\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3092\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n<p>\u95a2\u9023\u8a18\u4e8b\uff1a<a href=\"https:\/\/blastengine.jp\/blog_content\/dkim_basic\/\" target=\"_blank\" rel=\"noopener\">\u3010\u56f3\u89e3\u3011\u521d\u3081\u3066\u3067\u3082\u8179\u843d\u3061\uff01DKIM\u306e\u4ed5\u7d44\u307f\u3068\u8a2d\u5b9a\u65b9\u6cd5<\/a><\/p>\n<p>2048\u30d3\u30c3\u30c8DKIM\u9375\u306e\u8a2d\u5b9a\u3068\u300cDNS\u306e255\u6587\u5b57\u5236\u9650\u300d\u5bfe\u7b56<br \/>\n\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5f37\u5ea6\u304c\u6c42\u3081\u3089\u308c\u308b\u4e2d\u3067\u5f93\u6765\u306e1024\u30d3\u30c3\u30c8\u304b\u3089\u3088\u308a\u5f37\u56fa\u306a2048\u30d3\u30c3\u30c8\u306e\u9375\u9577\u3078\u79fb\u884c\u3059\u308b\u52d5\u304d\u304c\u52a0\u901f\u3057\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u9375\u9577\u304c\u500d\u306b\u306a\u308b\u3053\u3068\u3067DNS\u30ec\u30b3\u30fc\u30c9\u306b\u767b\u9332\u3059\u308b\u6587\u5b57\u5217\u3082\u9577\u304f\u306a\u308a\u4e00\u822c\u7684\u306aDNS\u30b5\u30fc\u30d3\u30b9\u306e\u5236\u9650\u306b\u5f15\u3063\u304b\u304b\u3063\u3066\u3057\u307e\u3046\u3068\u3044\u3046\u65b0\u305f\u306a\u554f\u984c\u304c\u767a\u751f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u306a\u305c2025\u5e74\u306f2048\u30d3\u30c3\u30c8\u306e\u9375\u9577\u304c\u63a8\u5968\u3055\u308c\u308b\u306e\u304b<\/h2>\n<p>\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u8a08\u7b97\u80fd\u529b\u5411\u4e0a\u306b\u4f34\u3044\u77ed\u3044\u6697\u53f7\u9375\u3067\u306f\u89e3\u8aad\u3055\u308c\u308b\u30ea\u30b9\u30af\u304c\u9ad8\u307e\u3063\u3066\u3044\u308b\u305f\u3081\u3067\u3059\u3002NIST\uff08\u7c73\u56fd\u56fd\u7acb\u6a19\u6e96\u6280\u8853\u7814\u7a76\u6240\uff09\u306a\u3069\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u95a2\u30822048\u30d3\u30c3\u30c8\u4ee5\u4e0a\u306e\u4f7f\u7528\u3092\u5f37\u304f\u63a8\u5968\u3057\u3066\u304a\u308aGmail\u306a\u3069\u306e\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30de\u30fc\u3082\u9577\u9375\u9577\u3078\u306e\u5bfe\u5fdc\u3092\u9001\u4fe1\u8005\u306b\u6c42\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>1024\u30d3\u30c3\u30c8\u3067\u3082\u73fe\u6642\u70b9\u3067\u306f\u52d5\u4f5c\u3059\u308b\u5834\u5408\u304c\u591a\u3044\u3067\u3059\u304c\u5c06\u6765\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u57fa\u6e96\u306e\u5f15\u304d\u4e0a\u3052\u3092\u898b\u8d8a\u3057\u3066\u4eca\u306e\u3046\u3061\u304b\u30892048\u30d3\u30c3\u30c8\u3067\u8a2d\u5b9a\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u8ce2\u660e\u306a\u5224\u65ad\u3068\u3044\u3048\u307e\u3059\u3002<\/p>\n<h3>TXT\u30ec\u30b3\u30fc\u30c9\u304c\u9577\u3059\u304e\u308b\u5834\u5408\u306e\u300c\u30ec\u30b3\u30fc\u30c9\u5206\u5272\u300d\u306e\u66f8\u304d\u65b9<\/h3>\n<p>DNS\u306eTXT\u30ec\u30b3\u30fc\u30c9\u306b\u306f\u300c1\u3064\u306e\u6587\u5b57\u5217\u306f255\u6587\u5b57\u307e\u3067\u300d\u3068\u3044\u3046\u4ed5\u69d8\u4e0a\u306e\u5236\u9650\u304c\u3042\u308a\u307e\u3059\u30022048\u30d3\u30c3\u30c8\u306e\u516c\u958b\u9375\u306f\u3053\u306e\u5236\u9650\u3092\u8d85\u3048\u308b\u9577\u3055\u306b\u306a\u308b\u305f\u3081\u305d\u306e\u307e\u307e\u8cbc\u308a\u4ed8\u3051\u308b\u3068\u30a8\u30e9\u30fc\u306b\u306a\u3063\u305f\u308a\u52dd\u624b\u306b\u5207\u308a\u6368\u3066\u3089\u308c\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3092\u56de\u907f\u3059\u308b\u306b\u306f\u9375\u306e\u6587\u5b57\u5217\u3092\u9069\u5207\u306a\u4f4d\u7f6e\u3067\u533a\u5207\u308a\u8907\u6570\u306e\u5f15\u7528\u7b26\uff08&#8221;&#8221;\uff09\u3067\u56f2\u3093\u3067\u8a18\u8ff0\u3059\u308b\u300c\u30ec\u30b3\u30fc\u30c9\u5206\u5272\u300d\u3068\u3044\u3046\u624b\u6cd5\u3092\u7528\u3044\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u9577\u3044\u6587\u5b57\u5217\u3092\u300c&#8221;\u524d\u534a\u306e\u6587\u5b57\u5217&#8221; &#8220;\u5f8c\u534a\u306e\u6587\u5b57\u5217&#8221;\u300d\u306e\u3088\u3046\u306b\u30b9\u30da\u30fc\u30b9\u307e\u305f\u306f\u6539\u884c\u3067\u533a\u5207\u3063\u3066\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067DNS\u30b5\u30fc\u30d0\u30fc\u5074\u304c\u81ea\u52d5\u7684\u306b\u9023\u7d50\u3057\u3066\u4e00\u3064\u306e\u30ec\u30b3\u30fc\u30c9\u3068\u3057\u3066\u6271\u3063\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<h3>\u4e3b\u8981\u306aDNS\u30b5\u30fc\u30d3\u30b9\uff08AWS Route53, \u304a\u540d\u524d.com\u7b49\uff09\u3067\u306e\u8a2d\u5b9a\u4f8b<\/h3>\n<p>\u5229\u7528\u3057\u3066\u3044\u308bDNS\u30d7\u30ed\u30d0\u30a4\u30c0\u306b\u3088\u3063\u3066\u9577\u3044\u30ec\u30b3\u30fc\u30c9\u306e\u6271\u3044\u65b9\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070AWS Route53\u3067\u306f\u7ba1\u7406\u753b\u9762\u4e0a\u3067\u81ea\u52d5\u7684\u306b\u5206\u5272\u51e6\u7406\u304c\u884c\u308f\u308c\u306a\u3044\u305f\u3081\u3001\u624b\u52d5\u3067\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u7528\u3044\u3066\u5206\u5272\u8a18\u8ff0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u53c2\u8003\uff1a<a href=\"https:\/\/repost.aws\/ja\/knowledge-center\/route-53-configure-long-spf-txt-records\" target=\"_blank\" rel=\"noopener\">AWS\u516c\u5f0f\uff1aRoute 53 \u3067 255 \u6587\u5b57\u3092\u8d85\u3048\u308b TXT \u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b<\/a><\/p>\n<p>\u4e00\u65b9\u3067\u3001\u304a\u540d\u524d.com\u306a\u3069\u306e\u4e00\u90e8\u306e\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u3001\u5165\u529b\u6b04\u306b510\u6587\u5b57\u307e\u3067\u306e\u5236\u9650\u304c\u3042\u308b\u3082\u306e\u306e\u3001\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u30b7\u30b9\u30c6\u30e0\u5074\u3067\u81ea\u52d5\u4ed8\u4e0e\u3055\u308c\u308b\u305f\u3081\u3001\u624b\u52d5\u3067\u5165\u529b\u3059\u308b\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308b\u306a\u3069\u306e\u4ed5\u69d8\u306e\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u53c2\u8003\uff1a<a href=\"https:\/\/help.onamae.com\/answer\/7894\" target=\"_blank\" rel=\"noopener\">\u304a\u540d\u524d.com\u516c\u5f0f\uff1aDNS\u30ec\u30b3\u30fc\u30c9\u8a2d\u5b9a\u306e\u5165\u529b\u53ef\u80fd\u6587\u5b57\u306f\uff1f<\/a><\/p>\n<div class=\"list04\">\n<ul>\n<li>AWS Route53\u7b49\u306f\u624b\u52d5\u3067\u5f15\u7528\u7b26\u306b\u3088\u308b\u5206\u5272\u8a18\u8ff0\u304c\u5fc5\u8981<\/li>\n<li>\u304a\u540d\u524d.com\u7b49\u306f\u5165\u529b\u6b04\u306e\u5236\u9650\u306b\u3088\u308a\u8abf\u6574\u304c\u5fc5\u8981\u306a\u5834\u5408\u304c\u3042\u308b<\/li>\n<li>\u30d0\u30ea\u30e5\u30fc\u30c9\u30e1\u30a4\u30f3\u7b49\u306f\u81ea\u52d5\u3067\u5206\u5272\u3055\u308c\u308b\u3053\u3068\u3082\u3042\u308b\u305f\u3081\u4ed5\u69d8\u3092\u78ba\u8a8d\u3059\u308b<\/div><\/li>\n<\/ul>\n<h2><b>DKIM\u8a2d\u5b9a\u5f8c\u306e\u6ce8\u610f\u70b9<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">DKIM\u3092\u8a2d\u5b9a\u3057\u305f\u5f8c\u306f\u3001\u4ee5\u4e0b\u306e\u70b9\u306b\u6ce8\u610f\u3092\u3057\u3066\u904b\u7528\u30fb\u7ba1\u7406\u3092\u884c\u3044\u307e\u3057\u3087\u3046\u3002<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u52d5\u4f5c\u78ba\u8a8d<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u9375\u306e\u7ba1\u7406<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">DNS\u306e\u904b\u7528<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u305d\u308c\u305e\u308c\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/span><\/p>\n<h3><b>\u52d5\u4f5c\u78ba\u8a8d<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u8a2d\u5b9a\u3057\u305fDKIM\u304c\u6b63\u3057\u304f\u4f5c\u52d5\u3057\u3066\u3044\u308b\u304b\u30c1\u30a7\u30c3\u30af\u304c\u5fc5\u8981\u3067\u3059\u3002DKIM\u306e\u8a2d\u5b9a\u304c\u6b63\u3057\u304f\u884c\u308f\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u305b\u3093\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">DKIM\u306e\u52d5\u4f5c\u78ba\u8a8d\u306b\u306f\u300c\u30aa\u30f3\u30e9\u30a4\u30f3\u30c4\u30fc\u30eb\u300d\u3068\u300c\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u300d\u306e\u3044\u305a\u308c\u304b\u3092\u6d3b\u7528\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u5f8c\u8005\u306f\u6280\u8853\u7684\u306a\u30cf\u30fc\u30c9\u30eb\u304c\u9ad8\u3044\u305f\u3081\u3001\u307e\u305a\u306f\u30aa\u30f3\u30e9\u30a4\u30f3\u30c4\u30fc\u30eb\u3067\u78ba\u8a8d\u3092\u884c\u3046\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u300cMXToolBox\u300d\u3092\u4f7f\u3063\u305fDKIM\u52d5\u4f5c\u78ba\u8a8d\u306e\u624b\u9806\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/span><\/p>\n<div class=\"list04\">\n<ul>\n<li>\u5165\u529b\u30d0\u30fc\u306e\u53f3\u5074\u306b\u3042\u308b\u4e09\u89d2\u30a2\u30a4\u30b3\u30f3\u3092\u30af\u30ea\u30c3\u30af<\/li>\n<li>\u300cDKIM Lookup\u300d\u307e\u305f\u306f\u300cDKIM Test\u300d\u3092\u9078\u629e<\/li>\n<li>\u30c9\u30e1\u30a4\u30f3\u540d\u3068\u30bb\u30ec\u30af\u30bf\uff08\u30bb\u30ec\u30af\u30bf\u3068\u306fDKIM\u7f72\u540d\u306e\u4e00\u90e8\u3067\u3001\u7279\u5b9a\u306e\u9375\u3092\u8b58\u5225\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\uff09\u3092\u5165\u529b<\/li>\n<li>\u5b9f\u884c\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af<\/li>\n<\/ul>\n<\/div>\n<p><span style=\"font-weight: 400;\">\u4e0a\u8a18\u306e\u624b\u9806\u3092\u8e0f\u3080\u3068\u3001\u5165\u529b\u3057\u305f\u30c9\u30e1\u30a4\u30f3\u306b\u95a2\u3059\u308bDKIM\u306e\u8a2d\u5b9a\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/span><\/p>\n<h3><b>\u9375\u306e\u7ba1\u7406<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">DKIM\u3067\u5229\u7528\u3059\u308b\u9375\u306f\u300c\u516c\u958b\u9375\u300d\u3068\u300c\u79d8\u5bc6\u9375\u300d\u306e2\u7a2e\u985e\u3067\u3059\u3002\u516c\u958b\u9375\u306fDNS\u306b\u516c\u958b\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u79d8\u5bc6\u9375\u306f\u9001\u4fe1\u5143\u304c\u8a2d\u5b9a\u3057\u3001\u53b3\u91cd\u306b\u4fdd\u7ba1\u3057\u3066\u304a\u304b\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u3082\u3057\u3001\u79d8\u5bc6\u9375\u306e\u60c5\u5831\u304c\u6f0f\u6d29\u3059\u308b\u3068\u3001\u7b2c\u4e09\u8005\u304c\u306a\u308a\u3059\u307e\u3057\u3092\u884c\u3063\u305f\u30e1\u30fc\u30eb\u3067\u3082\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\u3057\u3066\u3057\u307e\u3046\u305f\u3081\u3001DKIM\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u304c\u7834\u7dbb\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u79d8\u5bc6\u9375\u306f\u793e\u5185\u3067\u3082\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u4eba\u3092\u9650\u5b9a\u3057\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5f37\u56fa\u306a\u5834\u6240\u306b\u4fdd\u7ba1\u3057\u307e\u3057\u3087\u3046\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u307e\u305f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5805\u7262\u6027\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u3001\u516c\u958b\u9375\u3068\u79d8\u5bc6\u9375\u306f\u5b9a\u671f\u7684\u306b\u66f4\u65b0\u3059\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u70b9\u306b\u6ce8\u610f\u3057\u3066\u7ba1\u7406\u3092\u884c\u3044\u307e\u3059\u3002<\/span><\/p>\n<div class=\"list04\">\n<ul>\n<li>\u5b9a\u671f\u7684\u306a\u9375\u306e\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u884c\u3046<\/li>\n<li>\u79d8\u5bc6\u9375\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u53b3\u91cd\u306b\u7ba1\u7406\u3059\u308b<\/li>\n<li>\u9375\u306e\u5909\u66f4\u6642\u306b\u306f\u3001\u53e4\u3044\u9375\u3092\u8fc5\u901f\u306b\u7121\u52b9\u5316\u3059\u308b<\/li>\n<\/ul>\n<\/div>\n<p><span style=\"font-weight: 400;\">DKIM\u306e\u8a2d\u5b9a\u5f8c\u306f\u7ba1\u7406\u3084\u66f4\u65b0\u306b\u95a2\u3059\u308b\u30eb\u30fc\u30eb\u3092\u5b9a\u3081\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u7dad\u6301\u306b\u52aa\u3081\u307e\u3057\u3087\u3046\u3002<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">DNS\u306e\u904b\u7528<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">DKIM\u306e\u516c\u958b\u9375\u306fDNS\u306eTXT\u30ec\u30b3\u30fc\u30c9\u306b\u767b\u9332\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u3001DNS\u306e\u8a2d\u5b9a\u3068\u904b\u7528\u3082\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3068\u306a\u308a\u307e\u3059\u3002\u516c\u958b\u9375\u3092\u9069\u5207\u306b\u8a2d\u5b9a\u3057\u3001DNS\u306e\u5909\u66f4\u304c\u53cd\u6620\u3055\u308c\u308b\u307e\u3067\u306e\u30d7\u30ed\u30d1\u30b2\u30fc\u30b7\u30e7\u30f3\u6642\u9593\u3092\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u307e\u305f\u3001DNS\u8a2d\u5b9a\u306b\u5909\u66f4\u304c\u3042\u3063\u305f\u5834\u5408\u306b\u306f\u3001\u8fc5\u901f\u306bDKIM\u8a2d\u5b9a\u3082\u66f4\u65b0\u3057\u3001\u6574\u5408\u6027\u3092\u4fdd\u3064\u3053\u3068\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/span><\/p>\n<h2>DMARC\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u610f\u8b58\u3057\u305fDKIM\u8a2d\u5b9a\u306e\u30dd\u30a4\u30f3\u30c8<\/h2>\n<p>DKIM\u306e\u8a2d\u5b9a\u306b\u304a\u3044\u3066\u6700\u3082\u91cd\u8981\u306a\u6982\u5ff5\u306e\u4e00\u3064\u304c\u300cDMARC\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\uff08\u6574\u5408\u6027\uff09\u300d\u3067\u3059\u3002\u3053\u308c\u306f\u5358\u306bDKIM\u7f72\u540d\u304c\u6b63\u3057\u3044\u304b\u3069\u3046\u304b\u3060\u3051\u3067\u306a\u304f\u300c\u8ab0\u304c\u7f72\u540d\u3057\u305f\u304b\u300d\u304c\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143\uff08From\u30a2\u30c9\u30ec\u30b9\uff09\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u30022025\u5e74\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3092\u30af\u30ea\u30a2\u3059\u308b\u305f\u3081\u306b\u306f\u3053\u306e\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u306e\u6982\u5ff5\u3092\u6b63\u3057\u304f\u7406\u89e3\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u7b2c\u4e09\u8005\u7f72\u540d\u3068\u4f5c\u6210\u8005\u7f72\u540d\uff08\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u7f72\u540d\uff09\u306e\u9055\u3044<\/h3>\n<p>\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u8a2d\u5b9a\u3067\u306f\u30b5\u30fc\u30d3\u30b9\u63d0\u4f9b\u4e8b\u696d\u8005\u306e\u30c9\u30e1\u30a4\u30f3\uff08\u4f8b\uff1asendgrid.net\u306a\u3069\uff09\u3067\u7f72\u540d\u304c\u884c\u308f\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u300c\u7b2c\u4e09\u8005\u7f72\u540d\u300d\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3067\u81ea\u793e\u306e\u30c9\u30e1\u30a4\u30f3\uff08\u4f8b\uff1acompany.co.jp\uff09\u3067\u7f72\u540d\u3092\u884c\u3046\u8a2d\u5b9a\u3092\u300c\u4f5c\u6210\u8005\u7f72\u540d\u300d\u307e\u305f\u306f\u300c\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u7f72\u540d\u300d\u3068\u547c\u3073\u307e\u3059\u3002\u7b2c\u4e09\u8005\u7f72\u540d\u3067\u3082DKIM\u8a8d\u8a3c\u81ea\u4f53\u306f\u30d1\u30b9\u3057\u307e\u3059\u304c\u6b21\u9805\u3067\u89e3\u8aac\u3059\u308bDMARC\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u306e\u89b3\u70b9\u3067\u306f\u4e0d\u5341\u5206\u306a\u72b6\u614b\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>\u300cFrom\u30a2\u30c9\u30ec\u30b9\u300d\u3068\u300cd=\u30bf\u30b0\u300d\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u4e00\u81f4\u3055\u305b\u308b\u91cd\u8981\u6027<\/h3>\n<p>DMARC\u8a8d\u8a3c\u3092\u6210\u529f\u3055\u305b\u308b\u305f\u3081\u306b\u306f\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u30fc\u306e\u300cFrom\u30a2\u30c9\u30ec\u30b9\u300d\u306e\u30c9\u30e1\u30a4\u30f3\u3068DKIM\u7f72\u540d\u306b\u542b\u307e\u308c\u308b\u300cd=\u30bf\u30b0\u300d\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u3082\u3057From\u30a2\u30c9\u30ec\u30b9\u304c\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306a\u306e\u306bDKIM\u7f72\u540d\u304c\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u306e\u30c9\u30e1\u30a4\u30f3\uff08\u7b2c\u4e09\u8005\u7f72\u540d\uff09\u306e\u307e\u307e\u3060\u3068\u300c\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\u3057\u306a\u3044\u300d\u3068\u3057\u3066DMARC\u8a8d\u8a3c\u306f\u5931\u6557\uff08unaligned\uff09\u3068\u5224\u5b9a\u3055\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u9ad8\u3044\u5230\u9054\u7387\u3092\u5b9f\u73fe\u3057\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u3092\u5b8c\u9042\u3059\u308b\u305f\u3081\u306b\u306f\u5fc5\u305a\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u3092\u7528\u3044\u305f\u4f5c\u6210\u8005\u7f72\u540d\u3092\u884c\u3044From\u30a2\u30c9\u30ec\u30b9\u3068\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u3092\u4e00\u81f4\u3055\u305b\u308b\u3053\u3068\u304c\u5fc5\u9808\u6761\u4ef6\u3067\u3059\u3002<\/p>\n<h2><b>DKIM\u3092\u8a2d\u5b9a\u3057\u306a\u3044\u5834\u5408\u306b\u767a\u751f\u3059\u308b\u30ea\u30b9\u30af<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">DKIM\u3092\u8a2d\u5b9a\u305b\u305a\u306b\u30e1\u30fc\u30eb\u306e\u9001\u53d7\u4fe1\u3092\u884c\u3063\u3066\u3044\u308b\u3068\u3001\u3069\u306e\u3088\u3046\u306a\u30c8\u30e9\u30d6\u30eb\u304c\u767a\u751f\u3059\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/span><\/p>\n<h3><b>\u8ff7\u60d1\u30e1\u30fc\u30eb\u30fb\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u306b\u5229\u7528\u3055\u308c\u308b<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u3053\u3053\u307e\u3067\u306e\u89e3\u8aac\u3067\u3082\u3042\u3063\u305f\u3088\u3046\u306b\u3001DKIM\u306f\u914d\u4fe1\u3055\u308c\u305f\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u5143\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u3088\u3063\u3066\u4f5c\u6210\u3055\u308c\u305f\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u5f79\u5272\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">SPF\u3082\u540c\u69d8\u306b\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3068\u3057\u3066\u6d3b\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001DNS\u30ec\u30b3\u30fc\u30c9\u306b\u6ce8\u76ee\u3057\u305f\u8a8d\u8a3c\u3057\u304b\u884c\u308f\u306a\u3044\u305f\u3081\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u306e\u9632\u6b62\u304c\u3067\u304d\u307e\u305b\u3093\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u4e21\u8005\u306f\u540c\u3058\u8a8d\u8a3c\u6280\u8853\u3067\u306f\u3042\u308b\u3082\u306e\u306e\u3001\u5225\u306e\u65b9\u6cd5\u3067\u30c9\u30e1\u30a4\u30f3\u306e\u6b63\u5f53\u6027\u3092\u691c\u8a3c\u3059\u308b\u305f\u3081\u3001SPF\u3068DKIM\u306e\u4e21\u65b9\u304c\u6a5f\u80fd\u3059\u308b\u3053\u3068\u3067\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u3068\u300c\u6539\u3056\u3093\u300d\u306e\u5bfe\u7b56\u306b\u52b9\u679c\u3092\u767a\u63ee\u3057\u307e\u3059\u3002<\/span><\/p>\n<h3><b>\u30e1\u30fc\u30eb\u304c\u5c4a\u304d\u306b\u304f\u304f\u306a\u308b<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">DKIM\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u306a\u3044\u30e1\u30fc\u30eb\u306f\u3001\u53d7\u4fe1\u8005\u5074\u306e\u8a2d\u5b9a\u3067\u53d7\u4fe1\u30dc\u30c3\u30af\u30b9\u306b\u914d\u4fe1\u3055\u308c\u3065\u3089\u304f\u306a\u308a\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u7279\u306bGmail\u3067\u306f\u300c\u9001\u4fe1\u8005\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u300d\u306b\u300c\u5168\u3066\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u306bSPF\u304bDKIM\u306e\u3044\u305a\u308c\u304b\u300d\u3092\u4f7f\u7528\u3059\u308b\u65e8\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u307e\u305f\u3001<span style=\"color: #ff0000;\"><strong>1\u65e5\u306b5,000\u4ef6\u3092\u8d85\u3048\u308b\u9001\u4fe1\u8005\u306b\u306fDKIM\u30fbDMARC\u30fbSPF\u306e\u5168\u3066\u3092\u8a2d\u5b9a\u3057\u305f\u4e0a\u3067\u306e\u30e1\u30fc\u30eb\u914d\u4fe1<\/strong><\/span>\u304c\u6c42\u3081\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u8ff7\u60d1\u30e1\u30fc\u30eb\u3092\u8d77\u70b9\u3068\u3059\u308b\u30b5\u30a4\u30d0\u30fc\u72af\u7f6a\u304c\u5897\u3048\u3066\u3044\u308b\u8fd1\u5e74\u3067\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u304c\u4e0d\u5341\u5206\u306a\u30e1\u30fc\u30eb\u306f\u5230\u9054\u7387\u304c\u4f4e\u304f\u306a\u308b\u50be\u5411\u306b\u3042\u308a\u307e\u3059\u3002DKIM\u3084SPF\u306b\u95a2\u3057\u3066\u306f\u3001\u30e1\u30fc\u30eb\u3092\u9001\u53d7\u4fe1\u3059\u308b\u4e0a\u3067\u306e\u6a19\u6e96\u898f\u683c\u3068\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u7406\u89e3\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/span><\/p>\n<p>\u95a2\u9023\u8a18\u4e8b\uff1a<a href=\"https:\/\/blastengine.jp\/blog_content\/policy_gmail\/\" target=\"_blank\" rel=\"noopener\">Gmail\u9001\u4fe1\u8005\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u5909\u66f4\u306e\u5185\u5bb9\u3068\u5bfe\u5fdc\u65b9\u6cd5\u3092\u201d\uff11\u304b\u308910\u307e\u3067\u201d\u89e3\u8aac\uff01<\/a><\/p>\n<h2>\u3055\u3089\u306b\u4fe1\u983c\u3092\u9ad8\u3081\u308b\u6700\u65b0\u6280\u8853\u300cBIMI\u300d\u3068\u306f\uff1f<\/h2>\n<p>BIMI\uff08Brand Indicators for Message Identification\uff09\u306f\u3001SPF\u30fbDKIM\u30fbDMARC\u3068\u3044\u3063\u305f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u3001\u9001\u4fe1\u4f01\u696d\u306e\u30d6\u30e9\u30f3\u30c9\u30ed\u30b4\u3092\u8868\u793a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u65b0\u3057\u3044\u898f\u683c\u3067\u3059\u3002<\/p>\n<p>Google\u304c2021\u5e74\u306bGmail\u3078\u306e\u5bfe\u5fdc\u3092\u767a\u8868\u3057\u3066\u4ee5\u964d\u3001\u6025\u901f\u306b\u6ce8\u76ee\u3092\u96c6\u3081\u3066\u304a\u308a\u3001\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5f37\u5316\u3068\u30d6\u30e9\u30f3\u30c9\u8a8d\u77e5\u306e\u5411\u4e0a\u3092\u540c\u6642\u306b\u5b9f\u73fe\u3067\u304d\u308b\u6280\u8853\u3068\u3057\u3066\u3001\u591a\u304f\u306e\u4f01\u696d\u304c\u5c0e\u5165\u3092\u9032\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>BIMI\u306e\u4ed5\u7d44\u307f<\/h3>\n<p>BIMI\u306f\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u306eDNS\u306b\u300cBIMI\u30ec\u30b3\u30fc\u30c9\uff08TXT\u30ec\u30b3\u30fc\u30c9\uff09\u300d\u3092\u8ffd\u52a0\u3057\u3001\u305d\u3053\u306b\u81ea\u793e\u30d6\u30e9\u30f3\u30c9\u306e\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\uff08Gmail\u3084Apple Mail\u306a\u3069\uff09\u306f\u3001\u30e1\u30fc\u30eb\u53d7\u4fe1\u6642\u306bDNS\u306eBIMI\u30ec\u30b3\u30fc\u30c9\u3092\u53c2\u7167\u3057\u3001\u8a8d\u8a3c\u306b\u6210\u529f\u3057\u305f\u5834\u5408\u306b\u9650\u308a\u3001\u9001\u4fe1\u8005\u30a2\u30a4\u30b3\u30f3\u3068\u3057\u3066\u305d\u306e\u30ed\u30b4\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001BIMI\u3092\u6709\u52b9\u306b\u6a5f\u80fd\u3055\u305b\u308b\u305f\u3081\u306b\u306f\u3001<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\u3053\u3068\u304c\u524d\u63d0\u6761\u4ef6\u3068<\/strong><\/span>\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3059\u306a\u308f\u3061\u3001DKIM\u3068SPF\u304c\u3057\u3063\u304b\u308a\u3068\u8a2d\u5b9a\u30fb\u904b\u7528\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n<h3>DKIM\u3068BIMI\u306e\u95a2\u4fc2\u6027<\/h3>\n<p>BIMI\u306fDKIM\u306e\u300c\u4e0a\u4f4d\u306b\u4f4d\u7f6e\u3059\u308b\u300d\u6280\u8853\u3068\u3044\u3048\u307e\u3059\u3002BIMI\u304c\u6a5f\u80fd\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u8a8d\u8a3c\u30c1\u30a7\u30fc\u30f3\u304c\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u6210\u7acb\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>SPF\u3067\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u306e\u6b63\u5f53\u6027\u304c\u78ba\u8a8d\u3055\u308c\u3066\u3044\u308b\u3053\u3068<\/li>\n<li>DKIM\u306e\u96fb\u5b50\u7f72\u540d\u306b\u3088\u3063\u3066\u30e1\u30fc\u30eb\u306e\u6539\u3056\u3093\u304c\u306a\u3044\u3053\u3068\u304c\u8a3c\u660e\u3055\u308c\u3066\u3044\u308b\u3053\u3068<\/li>\n<li>DMARC\u306e\u30dd\u30ea\u30b7\u30fc\u304c\u300cquarantine\u300d\u307e\u305f\u306f\u300creject\u300d\u3067\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068<\/li>\n<li>\u4e0a\u8a18\u3059\u3079\u3066\u3092\u6e80\u305f\u3057\u305f\u4e0a\u3067\u3001BIMI\u30ec\u30b3\u30fc\u30c9\u304cDNS\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068<\/li>\n<\/ul>\n<\/div>\n\u3064\u307e\u308a\u3001DKIM\u306fBIMI\u5c0e\u5165\u306e\u305f\u3081\u306e\u5fc5\u9808\u6761\u4ef6\u3067\u3059\u3002\u9006\u306b\u8a00\u3048\u3070\u3001DKIM\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u3057\u3063\u304b\u308a\u6574\u5099\u3057\u3066\u3044\u308b\u4f01\u696d\u3053\u305d\u304c\u3001BIMI\u306e\u30e1\u30ea\u30c3\u30c8\u3092\u6700\u5927\u9650\u306b\u4eab\u53d7\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>BIMI\u3092\u5c0e\u5165\u3059\u308b\u30e1\u30ea\u30c3\u30c8<\/h3>\n<p>BIMI\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u5f97\u3089\u308c\u308b\u30e1\u30ea\u30c3\u30c8\u306f\u3001\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u30fb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306e\u67a0\u3092\u8d85\u3048\u305f\u3001\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30fb\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0\u306e\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\u3002\u81ea\u793e\u30d6\u30e9\u30f3\u30c9\u306e\u30ed\u30b4\u304c\u8868\u793a\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306f\u3001\u53d7\u4fe1\u8005\u306b\u5b89\u5fc3\u611f\u3092\u4e0e\u3048\u3001\u958b\u5c01\u3092\u4fc3\u3059\u52b9\u679c\u304c\u3042\u308a\u307e\u3059\u3002<\/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\u3001\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\u3002<\/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\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30e1\u30fc\u30eb\u3092\u898b\u5206\u3051\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u4fe1\u983c\u6027\u306e\u53ef\u8996\u5316\uff1a<\/strong>\u9001\u4fe1\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\u30e1\u30fc\u30eb\u904b\u7528\u306e\u4fe1\u983c\u6027\u3092\u793a\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/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\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u624b\u9806\u3092\u8e0f\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>SPF\u30fbDKIM\u30fbDMARC\u3092\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\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\u306eURL\u3092\u8a18\u8f09\u3059\u308b<\/li>\n<\/ul>\n<\/div>\n<p>\u306a\u304a\u3001Gmail\u3067BIMI\u306e\u30ed\u30b4\u3092\u5fc5\u305a\u8868\u793a\u3055\u305b\u308b\u306b\u306f\u3001\u8a8d\u8a3c\u5c40\u304c\u767a\u884c\u3059\u308bVMC\uff08Verified Mark Certificate\uff09\u306e\u53d6\u5f97\u304c\u5fc5\u8981\u3068\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002BIMI\u5c0e\u5165\u306b\u304a\u3044\u3066\u3001\u307e\u305a\u306fDMARC\u8a8d\u8a3c\u306e\u6574\u5099\u3092\u9032\u3081\u308b\u3053\u3068\u304c\u6700\u521d\u306e\u30b9\u30c6\u30c3\u30d7\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><b>\u30e1\u30fc\u30eb\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u306e\u6d3b\u7528<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">\u3053\u3053\u307e\u3067\u306e\u89e3\u8aac\u306b\u3082\u3042\u308b\u3088\u3046\u306b\u3001DKIM\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u306a\u3044\u74b0\u5883\u3067\u30e1\u30fc\u30eb\u306e\u9001\u53d7\u4fe1\u3092\u884c\u3046\u5834\u5408\u306f\u3001\u69d8\u3005\u306a\u30ea\u30b9\u30af\u3092\u62b1\u3048\u3066\u3057\u307e\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/span><span style=\"font-weight: 400;\">\u3068\u306f\u8a00\u3048\u3001DKIM\u306e\u8a2d\u5b9a\u306b\u306f\u5c02\u9580\u7684\u306a\u6280\u8853\u3092\u5fc5\u8981\u3068\u3059\u308b\u3053\u3068\u304b\u3089\u81ea\u529b\u3067\u306e\u8a2d\u5b9a\u304c\u96e3\u3057\u3044\u30b1\u30fc\u30b9\u3082\u3042\u308b\u3053\u3068\u3067\u3057\u3087\u3046\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u3053\u306e\u3088\u3046\u306a\u5834\u5408\u306f\u3001\u65e2\u5b58\u306e\u30e1\u30fc\u30eb\u30a4\u30f3\u30d5\u30e9\u306b\u5909\u66f4\u3092\u52a0\u3048\u305a\u306bDKIM\u3092\u8a2d\u5b9a\u3057\u305f\u30e1\u30fc\u30eb\u914d\u4fe1\u3092\u53ef\u80fd\u306b\u3059\u308b\u300c\u30e1\u30fc\u30eb\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u300d\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u30aa\u30b9\u30b9\u30e1\u3067\u3059\u3002<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">\u30e1\u30fc\u30eb\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u3068\u306f<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u30e1\u30fc\u30eb\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u306f\u3001\u81ea\u793e\u306eSMTP\u30b5\u30fc\u30d0\u30fc\u3068\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u306e\u9593\u3067\u3001\u5927\u91cf\u914d\u4fe1\u3084\u9ad8\u901f\u914d\u4fe1\u3092\u53ef\u80fd\u306b\u3059\u308bSMTP\u30b5\u30fc\u30d0\u30fc\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u30b5\u30fc\u30d3\u30b9\u306e\u3053\u3068\u3067\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u30b5\u30fc\u30d0\u30fc\u306e\u4e2d\u7d99\u65b9\u6cd5\u306f\u3001\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u540d\u524d\u304b\u3089\u300cSMTP\u30ea\u30ec\u30fc\u300d\u3068\u3082\u547c\u3070\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u30e1\u30fc\u30eb\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u3067\u5229\u7528\u3055\u308c\u308b\u4e2d\u7d99\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30e1\u30fc\u30eb\u306e\u914d\u4fe1\u901f\u5ea6\u3084\u52b9\u7387\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306e\u69d8\u3005\u306a\u6280\u8853\u3092\u5099\u3048\u3066\u304a\u308a\u3001\u30e1\u30fc\u30eb\u306e\u30b9\u30d1\u30e0\u5224\u5b9a\u3092\u907f\u3051\u308b\u305f\u3081\u306e\u5bfe\u7b56\u304c\u65bd\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<div class=\"list04\">\n<ul>\n<li>\u8ca0\u8377\u5206\u6563\u3068\u6700\u9069\u5316<\/li>\n<li>\u30b9\u30d1\u30e0\u30d5\u30a3\u30eb\u30bf\u30fc\u56de\u907f\u5bfe\u7b56<\/li>\n<li>\u9001\u4fe1\u5236\u5fa1\u3068\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/li>\n<li>\u914d\u4fe1\u306e\u6700\u9069\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/li>\n<li>\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u7ba1\u7406<\/li>\n<\/ul>\n<\/div>\n<p><span style=\"font-weight: 400;\">\u306a\u3069\u3001\u672c\u6765\u306f\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u3084\u3089\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u8907\u96d1\u306a\u696d\u52d9\u3092\u3059\u3079\u3066\u30e1\u30fc\u30eb\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u306b\u4efb\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u306f\u5927\u304d\u306a\u30e1\u30ea\u30c3\u30c8\u3068\u306a\u308a\u307e\u3059\u3002<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">\u30e1\u30fc\u30eb\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u300cblastengine\u300d\u306e\u6d3b\u7528<\/span><\/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><span style=\"font-weight: 400;\">blastengine\u306f\u7c21\u5358\u306b\u30e1\u30fc\u30eb\u306e\u5927\u898f\u6a21\u9ad8\u901f\u914d\u4fe1\u304c\u53ef\u80fd\u306aSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d0\u30fc\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u540c\u6642\u306b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044\u3001API\u3067\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u306e\u4ed5\u7d44\u307f\u3082\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u30b5\u30fc\u30d0\u30fc\u306e\u904b\u7528\u3084\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306fblastengine\u3067\u884c\u3046\u305f\u3081\u3001\u5e38\u306b\u9ad8\u3044IP\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4fdd\u3063\u3066\u5b89\u5168\u306b\u30e1\u30fc\u30eb\u3092\u9001\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u307e\u305f\u3001\u5c0e\u5165\u793e\u657027,000\u793e\u300115\u5e74\u9023\u7d9a\u9867\u5ba2\u5c0e\u5165\u6570No.1\u306e\u59c9\u59b9\u88fd\u54c1blastmail\u306e\u6280\u8853\u529b\u3067\u69cb\u7bc9\u3057\u305f\u914d\u4fe1\u57fa\u76e4\u3067\u3001\u5404\u30e1\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u3001\u643a\u5e2f\u30ad\u30e3\u30ea\u30a2\u30c9\u30e1\u30a4\u30f3\u3078\u306e\u6700\u9069\u5316\u3068\u5927\u898f\u6a21\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u7d4c\u7531\u3057\u3066\u30e1\u30fc\u30eb\u914d\u4fe1\u3092\u884c\u3044\u3001\u65e5\u672c\u56fd\u5185\u3078\u306e\u5727\u5012\u7684\u306a\u5230\u9054\u7387\u3092\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u305d\u308c\u3067\u3044\u3066\u3001<span style=\"color: #ff0000;\"><strong>\u6708\u984d3,000\u5186\u304b\u3089\u5229\u7528\u304c\u3067\u304d\u308b\u305f\u3081\u30b3\u30b9\u30c8\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3082\u9ad8\u304f<\/strong><\/span>\u3001\u30e1\u30fc\u30eb\u3060\u3051\u3067\u306a\u304f\u65e5\u672c\u8a9e\u3067\u306e\u96fb\u8a71\u30b5\u30dd\u30fc\u30c8\u306b\u3082\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u5165\u529b\u306e\u307f\u3067\u3059\u3050\u306b\u30c8\u30e9\u30a4\u30a2\u30eb\u3092\u59cb\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u306e\u3067\u3001\u662f\u975e\u8a66\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/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: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\u30a8\u30f3\u30b8\u30f3\u306e\u8a73\u7d30\u3078 &gt;<\/span><\/a><\/div>\n<h2><b>\u307e\u3068\u3081<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u306e1\u3064\u3067\u3042\u308b\u300cDKIM\u300d\u306f\u3001\u9001\u4fe1\u5143\u304c\u4f5c\u6210\u3057\u305f\u96fb\u5b50\u7f72\u540d\u3092\u53d7\u4fe1\u5074\u3067\u691c\u8a3c\u3059\u308b\u3053\u3068\u3067\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u3084\u300c\u6539\u3056\u3093\u300d\u3092\u9632\u6b62\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Google\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u3001DKIM\u3084SPF\u3001DMARC\u306a\u3069\u306e\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3092\u8a2d\u5b9a\u3057\u305f\u4e0a\u3067\u306e\u30e1\u30fc\u30eb\u306e\u9001\u53d7\u4fe1\u3092\u63a8\u5968\u3057\u3066\u304a\u308a\u3001\u4eca\u5f8c\u3055\u3089\u306b\u53b3\u3057\u3044\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8981\u4ef6\u304c\u8ffd\u52a0\u3055\u308c\u308b\u53ef\u80fd\u6027\u3082\u3042\u308b\u3067\u3057\u3087\u3046\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u305d\u306e\u305f\u3081\u3001\u4eca\u5f8c\u30e1\u30fc\u30eb\u306e\u5230\u9054\u7387\u3092\u7dad\u6301\u3059\u308b\u306b\u306fDKIM\u306e\u8a2d\u5b9a\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u3057\u304b\u3057\u3001DKIM\u306e\u8a2d\u5b9a\u306b\u306f\u5c02\u9580\u7684\u306a\u30b9\u30ad\u30eb\u304c\u5fc5\u8981\u306b\u306a\u308a\u3001\u793e\u5185\u306e\u30ea\u30bd\u30fc\u30b9\u306b\u3088\u3063\u3066\u306f\u81ea\u793e\u306e\u30e1\u30fc\u30eb\u30a4\u30f3\u30d5\u30e9\u3078\u306e\u5b9f\u88c5\u304c\u96e3\u3057\u3044\u5834\u5408\u3082\u60f3\u5b9a\u3055\u308c\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u3053\u306e\u3088\u3046\u306a\u8ab2\u984c\u3092\u6301\u3064\u4f01\u696d\u306f\u300c\u30e1\u30fc\u30eb\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u300d\u3092\u6d3b\u7528\u3057\u3001DKIM\u3092\u8a2d\u5b9a\u3057\u305f\u4e0a\u3067\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u74b0\u5883\u3092\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u30e1\u30fc\u30eb\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u306f\u3001\u5404\u30b7\u30b9\u30c6\u30e0\u3054\u3068\u306b\u6a5f\u80fd\u3084\u30d7\u30e9\u30f3\u304c\u7570\u306a\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u672c\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u3066\u3044\u308b\u3088\u3046\u306a\u8ab2\u984c\u306e\u89e3\u6d88\u306b\u306f\u300c\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u300d\u304c\u30aa\u30b9\u30b9\u30e1\u3067\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u306f\u6708\u984d3,000\u5186\u3067DKIM\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u300c\u9001\u4fe1\u8005\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u300d\u306b\u3082\u5bfe\u5fdc\u3057\u305f\u914d\u4fe1\u74b0\u5883\u304c\u6574\u5099\u3067\u304d\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u7121\u6599\u304a\u8a66\u3057\u671f\u9593\u3082\u7528\u610f\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u306e\u7121\u6599\u30c8\u30e9\u30a4\u30a2\u30eb<\/span><\/p>\n<p><span style=\"font-weight: 400;\">DKIM\u3084SPF\u3092\u8a2d\u5b9a\u3057\u3001\u30e1\u30fc\u30eb\u3092\u76f8\u624b\u306e\u53d7\u4fe1\u30dc\u30c3\u30af\u30b9\u306b\u78ba\u5b9f\u306b\u5c4a\u3051\u308b\u305f\u3081\u306e\u65bd\u7b56\u3068\u3057\u3066\u662f\u975e\u3054\u6d3b\u7528\u304f\u3060\u3055\u3044\u3002<\/span><\/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<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\u4ed5\u7d44\u307f\u3067\u3001\u5c0e\u5165\u3059\u308b\u30e1\u30ea\u30c3\u30c8\u306f\u4f55\u3067\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1aDKIM\u306f\u3001\u9001\u4fe1\u8005\u304c\u767a\u884c\u3057\u305f\u96fb\u5b50\u7f72\u540d\u3092\u7528\u3044\u3066\u30e1\u30fc\u30eb\u306e\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u3084\u300c\u6539\u3056\u3093\u300d\u3092\u9632\u3050\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3067\u3059\u3002\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u3001<strong>\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u304c\u9ad8\u307e\u308a\u3001\u30b9\u30d1\u30e0\u5224\u5b9a\u3092\u56de\u907f\u3057\u3066\u5230\u9054\u7387\u304c\u6539\u5584\u3055\u308c\u308b\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/strong><\/dd>\n<dt class=\"blog-faq__question\">Q\uff1aDKIM\u3001SPF\u3001DMARC\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1aSPF\u306fIP\u30a2\u30c9\u30ec\u30b9\u3067\u9001\u4fe1\u5143\u306e\u6b63\u5f53\u6027\u3092\u78ba\u8a8d\u3057\u3001DKIM\u306f\u96fb\u5b50\u7f72\u540d\u3067\u6539\u3056\u3093\u3092\u691c\u77e5\u3059\u308b\u6280\u8853\u3067\u3059\u3002DMARC\u306f\u3053\u308c\u3089\u3092\u88dc\u5b8c\u3057\u3001<strong>\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306e\u6271\u3044\uff08\u62d2\u5426\u3084\u9694\u96e2\u306a\u3069\uff09\u3092\u9001\u4fe1\u8005\u304c\u30dd\u30ea\u30b7\u30fc\u3068\u3057\u3066\u8a2d\u5b9a\u3067\u304d\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/strong><\/dd>\n<dt class=\"blog-faq__question\">Q\uff1aDKIM\u3092\u8a2d\u5b9a\u3057\u306a\u3044\u3068\u3069\u306e\u3088\u3046\u306a\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/dt><dd 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