{"id":345,"date":"2023-12-01T10:00:00","date_gmt":"2023-12-01T01:00:00","guid":{"rendered":"https:\/\/www.kagoya.jp\/howto\/?p=345"},"modified":"2024-11-20T14:26:56","modified_gmt":"2024-11-20T05:26:56","slug":"dmarc","status":"publish","type":"post","link":"https:\/\/www.kagoya.jp\/howto\/engineer\/communication\/dmarc\/","title":{"rendered":"DMARC\u3068\u306f?\u4ed5\u7d44\u307f\u3084\u30e1\u30ea\u30c3\u30c8\u3001\u5c0e\u5165\u65b9\u6cd5\u3092\u7d39\u4ecb"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/howtodmarc.jpg\" alt=\"\" class=\"wp-image-12559\"\/><\/figure>\n\n\n\n<p>\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5f37\u5316\u3092\u691c\u8a0e\u3057\u3066\u3044\u308b\u4f01\u696d\u3084\u500b\u4eba\u306f\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30e1\u30fc\u30eb\u3084\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u306e\u5bfe\u7b56\u306b\u300cDMARC\u304c\u6709\u52b9\u300d\u3068\u3044\u3046\u60c5\u5831\u306b\u305f\u3069\u308a\u7740\u304b\u308c\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u66f4\u306bDMARC\u306fGoogle\u306e\u65b0\u3057\u3044\u30dd\u30ea\u30b7\u30fc\u306e\u5f71\u97ff\u306b\u3088\u308a\u3001\u672a\u5bfe\u5fdc\u306e\u72b6\u614b\u3067\u306fGmail\u3084Google Workspace\u5b9b\u306b\u30e1\u30fc\u30eb\u9001\u4fe1\u3057\u3066\u3082\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u305d\u3082\u305d\u3082DMARC\u3068\u306f\u4f55\u304b\u3068\u3044\u3046\u3068\u3053\u308d\u307e\u3067\u628a\u63e1\u3057\u3066\u3044\u306a\u3044\u65b9\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u306e\u3067\u3001\u3053\u306e\u8a18\u4e8b\u3067\u306fDMARC\u306e\u57fa\u672c\u60c5\u5831\u304b\u3089\u30e1\u30ea\u30c3\u30c8\u3001\u5c0e\u5165\u65b9\u6cd5\u306a\u3069\u3092\u8a73\u3057\u304f\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"kh-box has-label is-style-red\"><div class=\"kh-box__label\">Pick Up\u8a18\u4e8b\uff01<\/div><div class=\"kh-box__content\">\n<p><strong>2024\u5e74\uff1a<a href=\"https:\/\/www.kagoya.jp\/howto\/engineer\/communication\/adoptdmarc\/\" target=\"_blank\" rel=\"noreferrer noopener\">DMARC\u304c\u300c\u63a8\u5968\u300d\u3067\u306f\u306a\u304f\u300c\u5fc5\u9808\u8981\u4ef6\u300d\u306b\uff01\uff1f\u8feb\u308a\u304f\u308b\u30e1\u30fc\u30eb\u904b\u7528\u3078\u306e\u5371\u6a5f<\/a><\/strong><\/p>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">DMARC\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>\u307e\u305a\u306f\u3001DMARC\u304c\u30e1\u30fc\u30eb\u9001\u53d7\u4fe1\u3067\u3069\u306e\u3088\u3046\u306a\u5f79\u5272\u3092\u679c\u305f\u3059\u6a5f\u80fd\u306a\u306e\u304b\u3001\u4ed6\u306e\u985e\u4f3c\u6a5f\u80fd\u3068\u306e\u9055\u3044\u306a\u3069\u306b\u3064\u3044\u3066\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DMARC\u306e\u6a5f\u80fd<\/h3>\n\n\n\n<p>DMARC\u306f\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u6a5f\u80fd\u3067\u3042\u308b\u300c\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u300d\u306e1\u3064\u3067\u3001\u30c9\u30e1\u30a4\u30f3\u6240\u6709\u8005\u306e\u8a8d\u8a3c\u3092\u901a\u3055\u305a\u306b\u3001<span class=\"kh-marker-blue\">\u5f53\u8a72\u30c9\u30e1\u30a4\u30f3\u306e\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u305f\u96fb\u5b50\u30e1\u30fc\u30eb\u8a8d\u8a3c\u30d7\u30ed\u30c8\u30b3\u30eb<\/span>\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"has-red-color has-text-color has-small-font-size\">\u203bDMARC\u306e\u6b63\u5f0f\u540d\u79f0\u306fDomain-based Message Authentication, Reporting and Conformance\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306eDMARC\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u306e\u985e\u3044\u3092\u6291\u5236\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u6700\u3082\u52b9\u679c\u306e\u9ad8\u3044\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u4e00\u3064\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>DMARC\u306e\u5177\u4f53\u7684\u306a\u6a5f\u80fd\u3068\u3057\u3066\u306f\u4ee5\u4e0b\u306e3\u3064\u306e\u30dd\u30a4\u30f3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><tbody><tr><td>\u8a8d\u8a3c<\/td><td>\u53d7\u4fe1\u5074\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306f\u30e1\u30fc\u30eb\u304c SPF \u3084 DKIM \u3067\u8a2d\u5b9a\u3055\u308c\u305f\u30dd\u30ea\u30b7\u30fc\u306b\u6cbf\u3063\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u8a8d\u8a3c\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td>\u30dd\u30ea\u30b7\u30fc\u306e<br>\u9069\u7528<\/td><td>\u30c9\u30e1\u30a4\u30f3\u6240\u6709\u8005\u304c\u3001\u8a8d\u8a3c\u5931\u6557\u306b\u306a\u3063\u305f\u30e1\u30fc\u30eb\u306e\u51e6\u7406\u65b9\u6cd5\u3092\u30dd\u30ea\u30b7\u30fc\u8a2d\u5b9a\u306b\u3088\u308a\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002<br>\u8a8d\u8a3c\u5931\u6557\u30e1\u30fc\u30eb\u306b\u5bfe\u3057\u7279\u306b\u51e6\u7406\u3057\u306a\u304b\u3063\u305f\u308a\u3001\u9694\u96e2\u30d5\u30a9\u30eb\u30c0\u306b\u79fb\u52d5\u3084\u53d7\u4fe1\u62d2\u5426\u3067\u914d\u4fe1\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/td><\/tr><tr><td>\u30ec\u30dd\u30fc\u30c6\u30a3\u30f3\u30b0<\/td><td>\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u304c\u3042\u308b\u305f\u3073\u306b\u53d7\u4fe1\u5074\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304c\u30c9\u30e1\u30a4\u30f3\u6240\u6709\u8005\u3078\u9001\u4fe1\u3057\u307e\u3059\u3002\u3042\u3089\u304b\u3058\u3081\u9001\u4fe1\u6761\u4ef6\u3092DKIM\u8a8d\u8a3c\u30a8\u30e9\u30fc\u3001SPF\u8a8d\u8a3c\u30a8\u30e9\u30fc\u3001\u3069\u3061\u3089\u3082\u30a8\u30e9\u30fc\u3001\u3044\u305a\u308c\u304b\u3067\u30a8\u30e9\u30fc\u306a\u3069\u304b\u3089\u9078\u629e\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<br>\u96c6\u7d04\u30ec\u30dd\u30fc\u30c8\u306e\u5834\u5408\u306f\u3042\u3089\u304b\u3058\u3081\u6307\u5b9a\u3055\u308c\u305f\u671f\u9593\u4e2d\u306eDMARC\u8a8d\u8a3c\u3092\u901a\u904e\u307e\u305f\u306f\u5931\u6557\u3057\u305f\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u6570\u3001\u9001\u4fe1\u30b5\u30fc\u30d0\u30fc\u306eIP\u30a2\u30c9\u30ec\u30b9\u3001\u4f7f\u7528\u3057\u305f\u8a8d\u8a3c\u65b9\u5f0f\u306a\u3069\u306e\u30ec\u30dd\u30fc\u30c8\u3092\u53d7\u4fe1\u5074\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304c\u30c9\u30e1\u30a4\u30f3\u6240\u6709\u8005\u3078\u9001\u308a\u307e\u3059\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u3053\u3053\u6700\u8fd1\u3067Gmail\u3084Yahoo!\u30e1\u30fc\u30eb\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304d\u306b\u304f\u304f\u306a\u3063\u305f\u3068\u611f\u3058\u3066\u3044\u308b\u5834\u5408\u306f\u3001DMARC\u306e\u3053\u3046\u3044\u3063\u305f\u8a8d\u8a3c\u6a5f\u80fd\u306e\u6709\u7121\u304c\u9ad8\u78ba\u7387\u3067\u5f71\u97ff\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u52a0\u3048\u3066\u3001\u5f8c\u8ff0\u3057\u307e\u3059\u304c\u81ea\u793e\u306e\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u306e\u5bfe\u7b56\u3068\u3057\u3066\u3082<span class=\"kh-marker-blue\">\u9ad8\u3044\u52b9\u679c\u3092\u767a\u63ee<\/span>\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DMARC\u306e\u4ed5\u7d44\u307f<\/h3>\n\n\n\n<p>DMARC\u306f\u3001\u540c\u3058\u304f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3067\u3042\u308bSPF\u3068DKIM\u306b\u3088\u3063\u3066\u691c\u8a3c\u3055\u308c\u305f\u7d50\u679c\u3001\u8a8d\u8a3c\u5931\u6557\u3068\u5224\u65ad\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306e\u53d6\u308a\u6271\u3044\u65b9\u3092\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u306e\u672c\u6765\u306e\u6240\u6709\u8005\u304c\u7ba1\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8a8d\u8a3c\u65b9\u5f0f\u306f\u4ee5\u4e0b\u306e\u56f3\u306e\u3088\u3046\u306b\u69d8\u3005\u306a\u7d4c\u8def\u3067\u30e1\u30fc\u30eb\u306e\u8a8d\u8a3c\u304c\u884c\u308f\u308c\u308b\u4ed5\u7d44\u307f\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/202104a_4-1.jpg\" alt=\"DMARC\u306e\u56f3\u89e3\" class=\"wp-image-12559\"\/><\/figure>\n\n\n\n<p>\u9001\u4fe1\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306f\u521d\u3081\u306b\u53d7\u4fe1\u8005\u5074\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306b\u5c4a\u3044\u305f\u6bb5\u968e\u3067SPF\u3068DKIM\u306e\u8a8d\u8a3c\u3092\u53d7\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8a8d\u8a3c\u306f\u30c9\u30e1\u30a4\u30f3\u306eDNS\u30ec\u30b3\u30fc\u30c9\u3092\u53c2\u7167\u3057\u3001\u8a8d\u8a3c\u3092\u30d1\u30b9\u3059\u308c\u3070\u9001\u4fe1\u30e1\u30fc\u30eb\u306f\u305d\u306e\u307e\u307e\u53d7\u4fe1\u8005\u306b\u5c4a\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"has-red-color has-text-color has-link-color has-small-font-size wp-elements-6a593fbd3b4b0edd42971b7daa07fc67\">\u203b\u53b3\u5bc6\u306b\u3044\u3046\u3068\u3001\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u8005\u304cDNS\u30b5\u30fc\u30d0\u30fc\u306b\u767b\u9332\u3059\u308b\u3068\u305d\u306eDNS\u60c5\u5831\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u53d7\u4fe1\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306f\u305d\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305fDNS\u60c5\u5831\u3092\u53c2\u7167\u3057\u3066\u8a8d\u8a3c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u3053\u3053\u3067\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\uff08\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3068\u5224\u65ad\u3055\u308c\u305f\uff09\u5834\u5408\u306f\u3001\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u30dd\u30ea\u30b7\u30fc\u306b\u6cbf\u3063\u305f\u51e6\u7406\u304c\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DMARC\u3067\u8a2d\u5b9a\u53ef\u80fd\u306a\u30dd\u30ea\u30b7\u30fc\u306b\u3064\u3044\u3066<\/h3>\n\n\n\n<p>\u3053\u3053\u3067DMARC\u3067\u8a2d\u5b9a\u3067\u304d\u308b\u30dd\u30ea\u30b7\u30fc\u306b\u3064\u3044\u3066\u3001\u3082\u3046\u5c11\u3057\u8a73\u7d30\u306a\u90e8\u5206\u307e\u3067\u3054\u7d39\u4ecb\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3054\u7d39\u4ecb\u306e\u901a\u308a\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306e\u51e6\u7406\u65b9\u6cd5\u3092<span class=\"kh-marker-blue\">\u30dd\u30ea\u30b7\u30fc\u8a2d\u5b9a\u3067\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3067\u304d\u307e\u3059<\/span>\u3002<\/p>\n\n\n\n<p>\u5177\u4f53\u7684\u306b\u306f\u3001\u4ee5\u4e0b\u306e3\u3064\u306e\u30dd\u30ea\u30b7\u30fc\u304b\u3089\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">\u30dd\u30ea\u30b7\u30fc<\/th><th>\u51e6\u7406\u5185\u5bb9<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>\u4f55\u3082\u3057\u306a\u3044<\/strong><br>\/<strong>None<\/strong><\/td><td>\u7279\u306b\u632f\u5206\/\u62d2\u5426\u306a\u3069\u3092\u884c\u308f\u305a\u53d7\u4fe1\u8005\u306b\u914d\u4fe1\u3055\u308c\u308b\u305f\u3081\u3001\u53d7\u4fe1\u8005\u5074\u306e\u8a2d\u5b9a\u306b\u59d4\u306d\u3089\u308c\u308b\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>\u9694\u96e2<\/strong><br>\/<strong>Quarantine<\/strong><\/td><td>\u4e0d\u5be9\u306a\u30e1\u30fc\u30eb\u3068\u3057\u3066\u6271\u3044\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306a\u3069\u9694\u96e2\u30d5\u30a9\u30eb\u30c0\u3078\u632f\u308a\u5206\u3051\u3089\u308c\u308b\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>\u62d2\u5426<\/strong><br>\/<strong>Reject<\/strong><\/td><td>\u9001\u4fe1\u30e1\u30fc\u30eb\u3092\u62d2\u5426\u3059\u308b\u305f\u3081\u3001\u30e1\u30fc\u30eb\u306f\u7834\u68c4\u3055\u308c\u53d7\u4fe1\u8005\u3078\u306f\u5c4a\u304b\u306a\u3044\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u300c<strong>\u4f55\u3082\u3057\u306a\u3044\uff08None\uff09<\/strong>\u300d\u306f\u6587\u5b57\u901a\u308a\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306b\u5bfe\u3057\u3001\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u8005\u5074\u3067\u306f<span class=\"kh-marker-blue\">\u7279\u306b\u4f55\u3082\u6307\u5b9a\u3057\u306a\u3044<\/span>\u3068\u3044\u3046\u30dd\u30ea\u30b7\u30fc\u3067\u3059\u3002\u3088\u3063\u3066\u3001\u8a8d\u8a3c\u5931\u6557\u30e1\u30fc\u30eb\u304c\u3069\u306e\u3088\u3046\u306a\u6271\u3044\u306b\u306a\u308b\u304b\u306f\u53d7\u4fe1\u8005\u5074\u306e\u8a2d\u5b9a\u306b\u59d4\u306d\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u300c<strong>\u9694\u96e2\uff08Quarantine\uff09<\/strong>\u300d\u306f\u8a8d\u8a3c\u5931\u6557\u30e1\u30fc\u30eb\u3092\u4e0d\u5be9\u306a\u30e1\u30fc\u30eb\u3068\u3057\u3066\u6271\u3044\u307e\u3059\u306e\u3067\u3001\u57fa\u672c\u7684\u306b\u306f\u53d7\u4fe1\u8005\u5074\u306e<span class=\"kh-marker-blue\">\u8ff7\u60d1\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u307e\u3059<\/span>\u3002\u305f\u3060\u3057\u3001\u53d7\u4fe1\u8005\u5074\u3067\u5c02\u7528\u306e\u9694\u96e2\u30d5\u30a9\u30eb\u30c0\u306a\u3069\u3092\u7528\u610f\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u305d\u3061\u3089\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u300c<strong>\u62d2\u5426\uff08Reject\uff09<\/strong>\u300d\u306f\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u3092\u5b8c\u5168\u306b\u62d2\u5426\u3059\u308b\u30dd\u30ea\u30b7\u30fc\u3068\u306a\u308a\u307e\u3059\u306e\u3067\u3001<span class=\"kh-marker-blue\">\u30e1\u30fc\u30eb\u306f\u305d\u306e\u5834\u3067\u7834\u68c4\u3055\u308c\u3001\u53d7\u4fe1\u8005\u5074\u306b\u306f\u8ff7\u60d1\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u3082\u5c4a\u304b\u306a\u304f<\/span>\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">SPF\u3084DKIM\u3068\u306e\u9055\u3044<\/h3>\n\n\n\n<p>DMARC\u306f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3067\u3059\u304c\u3001SPF\u3084DKIM\u3082\u540c\u3058\u304f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3067\u306f\u3001\u3053\u306e2\u3064\u306e\u8a8d\u8a3c\u3068DMARC\u306b\u3088\u308b\u8a8d\u8a3c\u3068\u3067\u300c\u3069\u306e\u3088\u3046\u306a\u9055\u3044\u304c\u3042\u308b\u306e\u304b\u300d\u3001\u300c\u3069\u308c\u304b\u4e00\u3064\u3060\u3051\u5c0e\u5165\u3059\u308c\u3070\u826f\u3044\u306e\u3067\u306f\u306a\u3044\u304b\u300d\u3068\u601d\u308f\u308c\u308b\u65b9\u3082\u5272\u3068\u591a\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u3053\u306e3\u3064\u306e\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306f\u305d\u308c\u305e\u308c\u7279\u5fb4\u3084\u30e1\u30ea\u30c3\u30c8\u304c\u660e\u78ba\u306b\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span style=\"text-decoration: underline;\">SPF<\/span><\/strong>\u306f\u9001\u4fe1\u5143\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e<span class=\"kh-marker-blue\">IP\u30a2\u30c9\u30ec\u30b9\u3092\u8a8d\u8a3c<\/span>\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3067\u3001\u975e\u5e38\u306b\u5c0e\u5165\u3082\u7c21\u5358\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong><span style=\"text-decoration: underline;\">DKIM<\/span><\/strong>\u306f\u9001\u4fe1\u30e1\u30fc\u30eb\u81ea\u4f53\u306b<span class=\"kh-marker-blue\">\u96fb\u5b50\u7f72\u540d\u3092\u4ed8\u4e0e<\/span>\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u305d\u306e\u7f72\u540d\u306e\u6709\u7121\u3067\u8a8d\u8a3c\u3092\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5c0e\u5165\u306b\u95a2\u3057\u3066\u306fSPF\u3088\u308a\u3082\u5c02\u9580\u77e5\u8b58\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u304c\u3001DKIM\u5bfe\u5fdc\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u306f\u6570\u30af\u30ea\u30c3\u30af\u3067\u8a2d\u5b9a\u304c\u5b8c\u4e86\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3057\u3066<strong><span style=\"text-decoration: underline;\">DMARC<\/span><\/strong>\u306f\u3053\u306e2\u3064\u306e\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u7d50\u679c\u3092\u3082\u3063\u3066\u3001<span class=\"kh-marker-blue\">\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306e\u51e6\u7406\u65b9\u6cd5\u3092\u5b9a\u3081\u308b<\/span>\u3053\u3068\u304c\u3067\u304d\u308b\u8a8d\u8a3c\u6a5f\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u3053\u304cSPF\u30fbDKIM\u3068\u5927\u304d\u306a\u9055\u3067\u3001\u3053\u306e2\u3064\u306e\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u5834\u5408\u306f\u8a8d\u8a3c\u306b\u3088\u308a\u9001\u4fe1\u30e1\u30fc\u30eb\u306e\u5224\u65ad\u306f\u53ef\u80fd\u3067\u3059\u304c\u3001\u305d\u306e\u5f8c\u306b\u305d\u306e\u30e1\u30fc\u30eb\u306e\u53d6\u308a\u6271\u3044\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u3059\u306a\u308f\u3061\u3001\u53d7\u4fe1\u8005\u5074\u306e\u8a2d\u5b9a\u306b\u59d4\u306d\u3089\u308c\u308b\u305f\u3081\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u5165\u308b\u3053\u3068\u3082\u3042\u308c\u3070\u3001\u305d\u306e\u307e\u307e\u53d7\u4fe1\u7bb1\u306b\u5c4a\u3044\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u70b9\u3001DMARC\u3067\u30dd\u30ea\u30b7\u30fc\u3092\u8a2d\u5b9a\u3067\u304d\u3066\u3044\u308c\u3070\u3001\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u3092\u9694\u96e2\u3059\u308b\u304b\u3001\u62d2\u5426\u306b\u3088\u308a\u305d\u306e\u307e\u307e\u524a\u9664\u3057\u3066\u3057\u307e\u3046\u304b\u3092\u3042\u308b\u7a0b\u5ea6\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><thead><tr><th>&nbsp;<\/th><th>SPF<\/th><th>DKIM<\/th><th>DMARC<\/th><\/tr><\/thead><tbody><tr><th>\u6982\u8981<\/th><td>\u9001\u4fe1\u5143\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306eIP\u30a2\u30c9\u30ec\u30b9\u3067\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u304b\u5426\u304b\u3092\u5224\u65ad<\/td><td>\u9001\u4fe1\u30e1\u30fc\u30eb\u306b\u96fb\u5b50\u7f72\u540d\u3092\u4ed8\u4e0e\u3057\u3066\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3067\u306a\u3044\u3053\u3068\u3092\u8a3c\u660e<\/td><td>SPF\u30fbDKIM\u306e\u691c\u8a3c\u7d50\u679c\u3092\u3082\u3068\u306b\u3001\u30e1\u30fc\u30eb\u3092\u51e6\u7406\u3059\u308b\u30dd\u30ea\u30b7\u30fc\u3092\u8a2d\u5b9a\u3059\u308b<\/td><\/tr><tr><th>\u8a2d\u5b9a\u306e\u8ca0\u62c5\/\u96e3\u6613\u5ea6<\/th><td>\u6700\u3082\u7c21\u5358\u3067\u624b\u9593\u304c\u304b\u304b\u3089\u306a\u3044<\/td><td>SPF\u3088\u308a\u8a2d\u5b9a\u306e\u624b\u9593\u304c\u304b\u304b\u308a\u3001\u5c02\u9580\u77e5\u8b58\u3082\u5fc5\u8981<\/td><td>\u6700\u3082\u5c02\u9580\u77e5\u8b58\u3092\u5fc5\u8981\u3068\u3057\u3001\u8a2d\u5b9a\u306e\u8ca0\u62c5\u3082\u5927\u304d\u3044<\/td><\/tr><tr><th>\u5bfe\u7b56\u306e\u6709\u52b9\u6027<\/th><td>3\u3064\u306e\u3046\u3061\u3067\u306f\u6700\u3082\u6709\u52b9\u6027\u306f\u9650\u3089\u308c\u308b<\/td><td>SPF\u3088\u308a\u6709\u52b9<\/td><td>\u6700\u3082\u6709\u52b9<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">SPF\/DKIM\/DMARC\u6bd4\u8f03\u8868<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">DMARC\u306e\u30e1\u30ea\u30c3\u30c8<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/dmarc.png\" alt=\"DMARC\u306e\u89e3\u8aac\" class=\"wp-image-11712\"\/><\/figure>\n\n\n\n<p>DMARC\u306e\u6a5f\u80fd\u3084\u4ed5\u7d44\u307f\u304c\u5206\u304b\u3063\u305f\u3082\u306e\u306e\u3001\u305d\u308c\u304c\u5177\u4f53\u7684\u306b\u3069\u306e\u3088\u3046\u306a\u30e1\u30ea\u30c3\u30c8\u306b\u7e4b\u304c\u308b\u306e\u304b\u30a4\u30e1\u30fc\u30b8\u3057\u306b\u304f\u3044\u3068\u3044\u3046\u65b9\u3082\u591a\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u4eca\u5f8c\u306f\u7279\u306b\u4f01\u696d\u3067\u3042\u308c\u3070\u3053\u306eDMARC\u306e\u6a5f\u80fd\u306f\u5fc5\u9808\u3068\u306a\u308b\u53ef\u80fd\u6027\u304c\u975e\u5e38\u306b\u9ad8\u3044\u30e1\u30fc\u30eb\u6a5f\u80fd\u3068\u306a\u308a\u307e\u3059\u306e\u3067\u3001\u30d3\u30b8\u30cd\u30b9\u30b7\u30fc\u30f3\u3067\u30e1\u30fc\u30eb\u3092\u5229\u7528\u3055\u308c\u308b\u65b9\u306f\u5fc5\u305a\u78ba\u8a8d\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u81ea\u793e\u306e\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u306b\u3088\u308b\u88ab\u5bb3\u3092\u4e88\u9632\u3067\u304d\u308b<\/h3>\n\n\n\n<p>DMARC\u30dd\u30ea\u30b7\u30fc\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067<span class=\"kh-marker-blue\">\u81ea\u793e\u306b\u306a\u308a\u3059\u307e\u3057\u305f\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u3057\u306a\u3044\u3088\u3046\u306b\u5bfe\u7b56<\/span>\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u53d6\u5f15\u5148\u304c\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30e1\u30fc\u30eb\u3092\u8aa4\u3063\u3066\u958b\u3044\u3066\u3057\u307e\u3046\u3068\u3044\u3063\u305f\u4e8b\u6545\u3092\u672a\u7136\u306b\u9632\u3052\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001\u81ea\u793e\u3092\u304b\u305f\u3063\u305f\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u304c\u6a2a\u884c\u3059\u308b\u3068\u3001\u4f01\u696d\u30a4\u30e1\u30fc\u30b8\u306e\u4f4e\u4e0b\u306b\u3082\u3064\u306a\u304c\u308a\u307e\u3059\u306e\u3067\u3001\u305d\u3046\u3044\u3063\u305f\u30ea\u30b9\u30af\u3082\u56de\u907f\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30e1\u30fc\u30eb\u8a8d\u8a3c\u72b6\u6cc1\u3092\u628a\u63e1\u3067\u304d\u308b<\/h3>\n\n\n\n<p>DMARC\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u53d7\u4fe1\u8005\u5074\u304b\u3089\u30e1\u30fc\u30eb\u306e<span class=\"kh-marker-blue\">\u8a8d\u8a3c\u7d50\u679c\u30ec\u30dd\u30fc\u30c8\u304c\u78ba\u8a8d\u3067\u304d\u308b\u3088\u3046\u306b<\/span>\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/dmarcreport.png\" alt=\"DMARC\u306e\u30ec\u30dd\u30fc\u30c8\" class=\"wp-image-11805\"\/><figcaption class=\"wp-element-caption\">\u30ec\u30dd\u30fc\u30c8\u306e\u30e1\u30fc\u30eb\u5185\u5bb9\uff08\u8a73\u7d30\u306f\u30d5\u30a1\u30a4\u30eb\u306b\u6dfb\u4ed8\u3055\u308c\u307e\u3059\uff09<\/figcaption><\/figure>\n\n\n\n<p class=\"has-red-color has-text-color has-link-color has-small-font-size wp-elements-406949aefcab0577d75f56db95e78733\">\u203b\u53d7\u4fe1\u8005\u5074\u3082DMARC\u3092\u5c0e\u5165\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u306b\u3088\u308a\u81ea\u793e\u306e\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u304c\u3069\u3053\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u9001\u4fe1\u3055\u308c\u305f\u306e\u304b\u3001SPF\u3084DKIM\u306e\u8a8d\u8a3c\u7d50\u679c\u306f\u3069\u3046\u3060\u3063\u305f\u304b\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u3053\u306e\u30ec\u30dd\u30fc\u30c8\u306f\u305d\u306e\u8a8d\u8a3c\u5931\u6557\u304c\u8d77\u304d\u308b\u5ea6\u306b\u9001\u4fe1\u3055\u308c\u307e\u3059\u306e\u3067\u3001\u305d\u308c\u3089\u306e\u30ec\u30dd\u30fc\u30c8\u3092\u96c6\u8a08\u3059\u308b\u3053\u3068\u3067\u3001\u3069\u306e\u304f\u3089\u3044\u306e\u983b\u5ea6\u3067\u9001\u4fe1\u3055\u308c\u3066\u3044\u308b\u304b\u306e\u72b6\u6cc1\u628a\u63e1\u3082\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u52a0\u3048\u3066\u3001\u4e00\u5b9a\u671f\u9593\u3054\u3068\u306b\u9001\u3089\u308c\u3066\u304f\u308b\u96c6\u7d04\u30ec\u30dd\u30fc\u30c8\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3067\u3001\u305d\u306e\u671f\u9593\u5185\u306eDMARC\u8a8d\u8a3c\u306e\u901a\u904e\u6570\u307e\u305f\u306f\u5931\u6557\u6570\u3001\u9001\u4fe1\u30b5\u30fc\u30d0\u30fc\u306eIP\u30a2\u30c9\u30ec\u30b9\u3001\u4f7f\u7528\u3057\u305f\u8a8d\u8a3c\u65b9\u5f0f\u306a\u3069\u307e\u3068\u307e\u3063\u305f\u60c5\u5831\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30ec\u30dd\u30fc\u30c8\u3092\u78ba\u8a8d\u3067\u304d\u308b\u74b0\u5883\u3067\u3042\u308c\u3070\u3001\u6025\u6fc0\u306b\u30ec\u30dd\u30fc\u30c8\u6570\u304c\u5897\u3048\u305f\u5834\u5408\u306f\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5c0e\u5165\u3057\u3066\u3044\u306a\u3044\u30e6\u30fc\u30b6\u30fc\u306f\u305d\u306e\u307e\u307e\u958b\u5c01\u3057\u3066\u3057\u307e\u3063\u3066\u3044\u308b\u53ef\u80fd\u6027\u3082\u51fa\u3066\u304f\u308b\u306e\u3067\u3001\u4e8b\u524d\u306b\u30db\u30fc\u30e0\u30da\u30fc\u30b8\u3084SNS\u7b49\u3067\u6ce8\u610f\u559a\u8d77\u3092\u63b2\u8f09\u3063\u3059\u308b\u3068\u3044\u3063\u305f\u5bfe\u5fdc\u3082\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u304a\u3059\u3059\u3081\u306eDMARC\u306e\u5c0e\u5165\u65b9\u6cd5<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1024\" height=\"551\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/202104a_1-3.jpg\" alt=\"\" class=\"wp-image-5002\" srcset=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/202104a_1-3.jpg 1024w, https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/202104a_1-3-300x161.jpg 300w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u3053\u308c\u304b\u3089\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u3057\u3066DMARC\u3092\u5c0e\u5165\u3059\u308b\u3068\u306a\u3063\u305f\u5834\u5408\u3001\u3044\u304f\u3064\u304b\u306e\u5c0e\u5165\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u9078\u629e\u3059\u308b\u65b9\u6cd5\u306b\u3088\u3063\u3066\u624b\u9593\u3084\u30b3\u30b9\u30c8\u306f\u5909\u52d5\u3057\u307e\u3059\u306e\u3067\u3001\u5c0e\u5165\u691c\u8a0e\u3055\u308c\u308b\u5834\u5408\u306f\u76ee\u3092\u901a\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DMARC\u5bfe\u5fdc\u6e08\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u5229\u7528\u3059\u308b<\/h3>\n\n\n\n<p>\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u4e8b\u696d\u8005\u306e\u4e2d\u306b\u306f\u3001SPF\u3084DKIM\u306b\u52a0\u3048\u3066DMARC\u3082\u5168\u3066\u63c3\u3048\u3066\u3044\u308b\u4e8b\u696d\u8005\u3082\u5b58\u5728\u3057\u307e\u3059\u3002\u3082\u3061\u308d\u3093<a href=\"https:\/\/www.kagoya.jp\/kir\/mail\/?argument=vqHX23Xs&amp;dmai=a6503df3676797\" target=\"_blank\" rel=\"noreferrer noopener\">KAGOYA\u306e\u30e1\u30fc\u30eb\u30d7\u30e9\u30f3<\/a>\u306e\u30bb\u30ad\u30e5\u30a2\u30d9\u30fc\u30b7\u30c3\u30af\u3084\u5c02\u7528\u30bf\u30a4\u30d7\u3082\u3053\u306e3\u3064\u306e\u6a5f\u80fd\u3092\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5192\u982d\u3067\u3054\u7d39\u4ecb\u3057\u305f\u653f\u5e9c\u306e\u8981\u8acb\u3082\u3042\u308a\u3001\u3088\u3046\u3084\u304f\u65e5\u672c\u56fd\u5185\u3067\u3082\u5c0e\u5165\u4f01\u696d\u304c\u5897\u3048\u3066\u3044\u308b\u3082\u306e\u306e\u3001\u7fa9\u52d9\u5316\u3057\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3082\u3042\u308b\u6b27\u7c73\u8af8\u56fd\u3068\u6bd4\u3079\u308b\u3068\u3001\u65e5\u672c\u56fd\u5185\u3067\u306e\u666e\u53ca\u306f\u9032\u3093\u3067\u3044\u307e\u305b\u3093\u3002<br>SPF\u3084DKIM\u306b\u306f\u5bfe\u5fdc\u3057\u3066\u3044\u3066\u3082\u3001DMARC\u307e\u3067\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306f\u307e\u3060\u5c11\u306a\u3044\u306e\u304c\u73fe\u72b6\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001DMARC\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u3082\u8a2d\u5b9a\u65b9\u6cd5\u304c\u96e3\u3057\u3044\u30b1\u30fc\u30b9\u3082\u3042\u308b\u306e\u3067\u3001KAGOYA\u306e\u30e1\u30fc\u30eb\u30d7\u30e9\u30f3\u306e\u3088\u3046\u306b\u3001<span class=\"kh-marker-blue\">\u7ba1\u7406\u753b\u9762\u304b\u3089\u7c21\u5358\u306b\u8a2d\u5b9a\u3067\u304d\u3066\u96fb\u8a71\u3067\u76f8\u8ac7\u3067\u304d\u308b\u306a\u3069\u30b5\u30dd\u30fc\u30c8\u4f53\u5236\u304c\u5145\u5b9f\u3057\u305f\u30b5\u30fc\u30d3\u30b9<\/span>\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u306f\u4e00\u4eba\u60c5\u30b7\u30b9\u306e\u3088\u3046\u306a\u72ec\u529b\u3067\u793e\u5185\u30e1\u30fc\u30eb\u306eDMARC\u5bfe\u5fdc\u304c\u5fc5\u9808\u306a\u65b9\u306b\u3068\u3063\u3066\u306f\u975e\u5e38\u306b\u5fc3\u5f37\u3044\u5b58\u5728\u3068\u306a\u308b\u3060\u3051\u3067\u306f\u306a\u304f\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u7b49\u306e\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306e\u624b\u9593\u3082\u7701\u3051\u308b\u305f\u3081\u901a\u5e38\u696d\u52d9\u306e\u52b9\u7387\u5316\u306b\u3082\u8ca2\u732e\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\uff1e<a href=\"https:\/\/www.kagoya.jp\/kir\/mail\/?argument=vqHX23Xs&amp;dmai=a6503df3676797\" target=\"_blank\" rel=\"noreferrer noopener\">SPF\/DKIM\/DMARC\u304c\u63c3\u3063\u3066\u3044\u308b\u56fd\u5185\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc<\/a><\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u81ea\u793e\u3067\u8a2d\u5b9a\u3082\u53ef\u80fd<\/h3>\n\n\n\n<p>\u3053\u306eDMARC\u306fSPF\u3084DKIM\u3082\u542b\u3081\u3001\u5168\u3066\u793e\u5185\u3067\u8a2d\u5b9a\u3092\u884c\u3046\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3060\u3057\u3001DMARC\u306e\u8a2d\u5b9a\u3092\u884c\u3046\u306b\u306fSPF\u8a2d\u5b9a\u3068DKIM\u8a2d\u5b9a\u306e\u4e21\u65b9\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u306e\u3067\u3001\u5148\u306b\u3053\u306e2\u3064\u306e\u8a2d\u5b9a\u3092\u5b8c\u4e86\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\t\t<div class=\"kh-blog-card\">\n\t\t\t\t\t\t\t<figure class=\"kh-blog-card__thumbnail\">\n\t\t\t\t\t<img decoding=\"async\" width=\"1200\" height=\"630\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/202008b_catch.png\" class=\"kh-blog-card__image wp-post-image\" alt=\"SPF\u30ec\u30b3\u30fc\u30c9\u3068\u306f\uff1f\u6b63\u3057\u3044\u66f8\u304d\u65b9\u3092\u5fb9\u5e95\u89e3\u8aac\" \/>\t\t\t\t<\/figure>\n\t\t\t\t\t\t<div class=\"kh-blog-card__text\">\n\t\t\t\t<p class=\"kh-blog-card__title\"><a href=\"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/spf\/\">SPF\u30ec\u30b3\u30fc\u30c9\u3068\u306f\uff1f\u6b63\u3057\u3044\u66f8\u304d\u65b9\u3092\u5fb9\u5e95\u89e3\u8aac<\/a><\/p>\n\t\t\t\t<p class=\"kh-blog-card__description\">\u4f01\u696d\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u507d\u88c5\u3057\u305f\u300c\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u300d\u306b\u3088\u308b\u72af\u7f6a\u304c\u3001\u4e16\u754c\u4e2d\u3067\u767a\u751f\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u53d6\u5f15\u5148\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u88c5\u3063\u305f\u507d\u306e\u9001\u91d1\u6307\u793a\u30e1\u30fc\u30eb\u306b\u5f93\u3063\u3066\u304a\u91d1\u3092\u632f\u308a\u8fbc\u3093\u3067\u3057\u307e\u3063\u305f\u4f8b\u306a\u3069\u3001\u300c\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u300d\u8a50\u6b3a\u306e\u88ab\u5bb3\u5831\u544a\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002 \u305d\u3093\u306a\u306a\u304b\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u4e88\u9632\u3059\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u4ee3\u8868\u7684\u306a\u6280\u8853\u306e1\u3064\u304c\u3001DNS\u3092\u4f7f\u3063\u305fSPF\u3068\u3044\u3046\u6280\u8853\u3067\u3059\u3002\u6628\u4eca\u3067\u306fSPF\u30ec\u30b3\u30fc\u30c9\u3092\u767b\u9332\u3057\u3066\u3044\u306a\u3044\u3053\u3068\u3067\u3001\u81ea\u793e\u304b\u3089\u9001\u4fe1\u3057&hellip;<\/p>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t\n\n\n<p>\u3053\u306e2\u3064\u306e\u8a2d\u5b9a\u304c\u3067\u304d\u308c\u3070\u3001\u9001\u4fe1\u5074\u3067DMARC\u306e\u8a2d\u5b9a\u3092\u884c\u3046\u305f\u3081\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30dd\u30ea\u30b7\u30fc\u30ec\u30b3\u30fc\u30c9\u3092DNS\u30b5\u30fc\u30d0\u30fc\u306eTXT\u30ec\u30b3\u30fc\u30c9\u306b\u8ffd\u52a0\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>_dmarc.kagoya.jp.\u3000\u3000IN TXT\u3000 \u201cv=DMARC1; p=reject; rua=mailto:example@kagoya.jp; ruf=mailto:ng_example@kagoya.jp \u201c<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8a18\u306fkagoya.jp\u306breject\uff08\u53d7\u4fe1\u62d2\u5426\uff09\u3067\u30dd\u30ea\u30b7\u30fc\u3092\u8a2d\u5b9a\u3059\u308b\u305f\u3081\u306e\u8a18\u8ff0\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DMARC\u306e\u30c7\u30e1\u30ea\u30c3\u30c8<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/safe.jpeg\" alt=\"\" class=\"wp-image-11299\" style=\"object-fit:cover\"\/><\/figure>\n\n\n\n<p>\u4eca\u5f8c\u30e1\u30fc\u30eb\u904b\u7528\u3092\u884c\u3046\u4e0a\u3067\u5fc5\u9808\u306b\u306a\u308b\u3067\u3042\u308d\u3046DMARC\u3067\u3059\u304c\u3001\u3044\u304f\u3064\u304b\u30c7\u30e1\u30ea\u30c3\u30c8\u3082\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"has-red-color has-text-color has-link-color has-small-font-size wp-elements-0f569bd1a444274fb2f9335d243883c6\">\u203b\u3044\u305a\u308c\u3082\u3001\u7279\u5b9a\u306e\u6761\u4ef6\u306b\u5f53\u3066\u306f\u307e\u3063\u305f\u5834\u5408\u306b\u767a\u751f\u3059\u308b\u30c7\u30e1\u30ea\u30c3\u30c8\u3068\u306a\u308a\u307e\u3059\u306e\u3067\u3001DMARC\u81ea\u4f53\u306f\u5909\u308f\u3089\u305a\u6709\u7528\u306a\u5b58\u5728\u3067\u3042\u308b\u3053\u3068\u306b\u306f\u5909\u308f\u308a\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7ba1\u7406\u8005\u306e\u8ca0\u62c5\u304c\u5897\u3048\u308b<\/h3>\n\n\n\n<p>1\u3064\u76ee\u306e\u30c7\u30e1\u30ea\u30c3\u30c8\u306f\u3001<span class=\"kh-marker-red\">\u30e1\u30fc\u30eb\u306e\u7ba1\u7406\u8005\u306e\u8ca0\u62c5\u304c\u5897\u3048<\/span>\u308b\u3068\u3044\u3046\u70b9\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u60c5\u30b7\u30b9\u304c\u3044\u308b\u4f01\u696d\u3067\u3042\u308c\u3070\u60c5\u30b7\u30b9\u304c\u62c5\u5f53\u3059\u308b\u3053\u3068\u306b\u306a\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u304c\u3001DMARC\u306f\u8a2d\u5b9a\u306b\u3088\u308a\u8a8d\u8a3c\u72b6\u6cc1\u306a\u3069\u306e\u30ec\u30dd\u30fc\u30c8\u914d\u4fe1\u3092\u53d7\u3051\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/dmarcreport.png\" alt=\"\" class=\"wp-image-11805\"\/><figcaption class=\"wp-element-caption\">DMARC\u30ec\u30dd\u30fc\u30c8\u306e\u4e00\u4f8b<\/figcaption><\/figure>\n\n\n\n<p>\u305d\u306e\u60c5\u5831\u3092\u5143\u306b\u8a8d\u8a3c\u72b6\u6cc1\u306a\u3069\u306e\u5206\u6790\u3092\u884c\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u305d\u306e\u4f5c\u696d\u304c\u305d\u306e\u307e\u307e\u666e\u6bb5\u306e\u696d\u52d9\u306b\u4e0a\u4e57\u305b\u3055\u308c\u307e\u3059\u3002\u307e\u305f\u3001\u30ec\u30dd\u30fc\u30c8\u306e\u898b\u65b9\u306b\u6163\u308c\u308b\u307e\u3067\u306f\u4f59\u8a08\u306b\u4f5c\u696d\u6642\u9593\u304c\u304b\u304b\u3063\u3066\u3057\u307e\u3046\u305f\u3081\u3001\u305d\u306e\u8ca0\u62c5\u5897\u306b\u3064\u3044\u3066\u306f\u4e8b\u524d\u306b\u628a\u63e1\u3001\u8abf\u6574\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u81ea\u5206\u3067\u8a2d\u5b9a\u3059\u308b\u306b\u306f\u5c02\u9580\u77e5\u8b58\u304c\u5fc5\u8981<\/h3>\n\n\n\n<p>2\u3064\u76ee\u306e\u30c7\u30e1\u30ea\u30c3\u30c8\u306f\u3001DMARC\u306e\u5c0e\u5165\u3092<span class=\"kh-marker-red\">\u5185\u88fd\u3067\u884c\u3046\u5834\u5408\u306b\u306f\u5c02\u9580\u77e5\u8b58\u306f\u5fc5\u8981<\/span>\u306b\u306a\u308b\u70b9\u3067\u3059\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/www.kagoya.jp\/lp\/mail_dmarc\/?argument=vqHX23Xs&amp;dmai=a658cdc207597e\" target=\"_blank\" rel=\"noreferrer noopener\">DMARC\u306b\u5bfe\u5fdc\u304b\u3064\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d1\u30cd\u30eb\u304b\u3089\u7c21\u5358\u306b\u8a2d\u5b9a\u304c\u53ef\u80fd\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc<\/a>\u3092\u5951\u7d04\u3059\u308b\u5834\u5408\u306f\u5b50\u306e\u30c7\u30e1\u30ea\u30c3\u30c8\u306f\u7121\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u81ea\u793e\u3067\u3059\u3079\u3066\u5bfe\u5fdc\u3057\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u3068\u3044\u3046\u5834\u5408\u306b\u306f\u5c02\u9580\u77e5\u8b58\u304c\u8981\u6c42\u3055\u308c\u308b\u305f\u3081\u3001\u5bfe\u5fdc\u3067\u304d\u308b\u4eba\u6750\u306e\u78ba\u4fdd\u3084\u80b2\u6210\u304c\u5fc5\u8981\u306b\u306a\u308a\u3001DMARC\u306e\u5c0e\u5165\u81ea\u4f53\u306b\u9045\u308c\u304c\u751f\u3058\u308b\u53ef\u80fd\u6027\u304c\u51fa\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304c\u5c11\u306a\u3044<\/h3>\n\n\n\n<p>\u524d\u8ff0\u3067\u3082\u5c11\u3057\u89e6\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u73fe\u72b6\u3068\u3057\u3066<s>DMARC\u5bfe\u5fdc\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3068\u3044\u3046\u306e\u304c\u6570\u304c\u9650\u3089\u308c\u3066\u3044\u308b\u72b6\u6cc1<\/s>\u306b\u3042\u308a\u307e\u3059\u306e\u3067\u3001<span class=\"kh-marker-red\">\u5bfe\u5fdc\u6e08\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u63a2\u3057\u51fa\u3059\u3068\u3044\u3046\u52b4\u529b\u304c\u767a\u751f<\/span>\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u65e2\u306b\u76ee\u307c\u3057\u3044\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u898b\u3064\u3051\u3089\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u7279\u306b\u554f\u984c\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u304c\u3001\u3053\u308c\u304b\u3089\u521d\u3081\u3066\u63a2\u3057\u59cb\u3081\u308b\u3068\u3044\u3046\u5834\u5408\u306b\u306f\u6642\u9593\u304c\u639b\u304b\u308b\u3053\u3068\u3092\u628a\u63e1\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u53cd\u5bfe\u306b\u3001\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u65e2\u306b\u898b\u3064\u3051\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u6570\u5341\u3082\u306e\u985e\u4f3c\u30b5\u30fc\u30d3\u30b9\u3092\u6bd4\u8f03\u3059\u308b\u3068\u3044\u3063\u305f\u4f5c\u696d\u304c\u4e0d\u8981\u306b\u306a\u308a\u307e\u3059\u306e\u3067\u3001\u305d\u3046\u3044\u3063\u305f\u9762\u3067\u306f\u691c\u8a0e\u304b\u3089\u5c0e\u5165\u307e\u3067\u306e\u6642\u9593\u3092\u77ed\u7e2e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\uff1e<a href=\"https:\/\/www.kagoya.jp\/kir\/mail\/?argument=vqHX23Xs&amp;dmai=a6503df3676797\" target=\"_blank\" rel=\"noreferrer noopener\">SPF\/DKIM\/DMARC\u304c\u63c3\u3063\u3066\u3044\u308b\u56fd\u5185\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc<\/a><\/strong><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8ffd\u8a18<\/h4>\n\n\n\n<p>2024\u5e742\u6708\u306b\u65bd\u884c\u3055\u308c\u305fGoogle\u306eGmail\u306b\u95a2\u3059\u308b\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u5909\u66f4\u306b\u3068\u3082\u306a\u3044\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u666e\u53ca\u304c\u6025\u6fc0\u306b\u9032\u307f\u3064\u3064\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\t\t<div class=\"kh-blog-card\">\n\t\t\t\t\t\t\t<figure class=\"kh-blog-card__thumbnail\">\n\t\t\t\t\t<img decoding=\"async\" width=\"1200\" height=\"630\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/gmai202402_catch.png\" class=\"kh-blog-card__image wp-post-image\" alt=\"2024\u5e742\u6708\u306bGmail\u3067\u8d77\u3053\u308b\u5909\u66f4\u306b\u3064\u3044\u3066\uff5c\u6ce8\u610f\u70b9\u3084\u5bfe\u5fdc\u3059\u3079\u304d\u70b9\u306b\u3064\u3044\u3066\" \/>\t\t\t\t<\/figure>\n\t\t\t\t\t\t<div class=\"kh-blog-card__text\">\n\t\t\t\t<p class=\"kh-blog-card__title\"><a href=\"https:\/\/www.kagoya.jp\/howto\/engineer\/communication\/gmail202402\/\">2024\u5e742\u6708\u306bGmail\u3067\u8d77\u3053\u308b\u5909\u66f4\u306b\u3064\u3044\u3066\uff5c\u6ce8\u610f\u70b9\u3084\u5bfe\u5fdc\u3059\u3079\u304d\u70b9\u306b\u3064\u3044\u3066<\/a><\/p>\n\t\t\t\t<p class=\"kh-blog-card__description\">2024\u5e742\u67081\u65e5\u306bGmail\u306e\u30dd\u30ea\u30b7\u30fc\u304c\u5909\u66f4\u3055\u308c\u308b\u3068\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3055\u308c\u305f\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u3066\u767a\u8868\u304c\u3042\u308a\u307e\u3057\u305f\u3002 \u3053\u308c\u306b\u3088\u308aGmail\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u500b\u4eba\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u306f\u5229\u4fbf\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u304c\u3001Gmail\u306b\u5b9b\u3066\u3066\u30e1\u30fc\u30eb\u3092\u914d\u4fe1\u3059\u308b\u4f01\u696d\u306f\u3053\u306e\u5909\u66f4\u3078\u306e\u5bfe\u7b56\u3092\u8b1b\u3058\u306a\u3044\u3068\u8ff7\u60d1\u30e1\u30fc\u30eb\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u307e\u308a\u307e\u3059\u3002 \u305d\u3053\u3067\u3053\u306e\u8a18\u4e8b\u3067\u306f\u30012024\u5e742\u6708\u306bGmail\u3067\u8d77\u3053\u308b\u5909\u66f4\u304c\u3069\u3046\u3044\u3063\u305f\u3082\u306e\u304b\u3001\u305d\u306e\u5909\u66f4\u306b\u95a2\u3059\u308b\u6ce8\u610f&hellip;<\/p>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t\n\n\n<p>\u7279\u306b\u5927\u624b\u4f01\u696d\u306eDMARC\u5c0e\u5165\u7387\u304c8\u5272\u8d85\u3068\u306a\u308a\u3001\u540c\u6642\u306b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u4e8b\u696d\u8005\u3082DMARC\u5bfe\u5fdc\u304c\u9032\u307f\u3064\u3064\u3042\u308b\u72b6\u6cc1\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DMARC\u5c0e\u5165\u6642\u306e\u6ce8\u610f\u70b9<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/attention.jpeg\" alt=\"\" class=\"wp-image-11296\" style=\"object-fit:cover\"\/><\/figure>\n\n\n\n<p>DMARC\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u610f\u5916\u3068\u5927\u304d\u306a\u30e1\u30ea\u30c3\u30c8\u3092\u53d7\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u5b9f\u969b\u306b\u5c0e\u5165\u3059\u308b\u5834\u5408\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u6ce8\u610f\u70b9\u304c\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u60c5\u5831\u304c\u5c11\u306a\u3044<\/h3>\n\n\n\n<p>\u5b9f\u306fDMARC\u306f\u6d77\u5916\u3067\u306f\u5c0e\u5165\u3057\u3066\u3044\u3066\u5f53\u305f\u308a\u524d\u3068\u3044\u3046\u30ec\u30d9\u30eb\u306e\u666e\u53ca\u7387\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u65e5\u672c\u306b\u9650\u3063\u3066\u8a00\u3048\u3070\u666e\u53ca\u7387\u306f\u304b\u306a\u308a\u4f4e\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u305f\u3081\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u65e5\u672c\u8a9e\u3067\u5c55\u958b\u3055\u308c\u3066\u3044\u308bDMARC\u95a2\u9023\u306e\u60c5\u5831\u304c\u304b\u306a\u308a\u5c11\u306a\u3044\u72b6\u6cc1\u306b\u3042\u308a\u3001\u306a\u306b\u304bDMARC\u3067\u56f0\u3063\u305f\u3053\u3068\u304c\u3042\u308b\u3068<span class=\"kh-marker-red\">\u81ea\u529b\u3067\u89e3\u6c7a\u3055\u305b\u308b\u3053\u3068\u304c\u975e\u5e38\u306b\u56f0\u96e3<\/span>\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3046\u3044\u3063\u305f\u80cc\u666f\u3082\u3042\u308a\u3001\u81ea\u793e\u3067\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u7ba1\u7406\u3057\u306a\u304c\u3089DMARC\u306e\u5c0e\u5165\u3092\u884c\u3046\u3088\u308a\u3082\u3001DMARC\u6a5f\u80fd\u304c\u3042\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306b\u7ba1\u7406\u5168\u822c\u3092\u4efb\u305b\u308b\u65b9\u6cd5\u304c\u304a\u3059\u3059\u3081\u306e\u65b9\u6cd5\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DMARC\u666e\u53ca\u7387\u306e\u6025\u5897<\/h3>\n\n\n\n<p>\u524d\u8ff0\u3067\u3082\u5c11\u3057\u89e6\u308c\u3066\u3044\u307e\u3059\u304c\u3001DMARC\u306f\u4eca\u73fe\u5728\u6025\u6fc0\u306b\u666e\u53ca\u7387\u304c\u4f38\u3073\u59cb\u3081\u3066\u3044\u308b\u72b6\u6cc1\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u308c\u81ea\u4f53\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u3067\u306f\u671b\u307e\u3057\u3044\u72b6\u6cc1\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u53cd\u5bfe\u306bDMARC\u306e\u5c0e\u5165\u304c\u5b8c\u4e86\u3057\u3066\u3044\u306a\u3044\u30c9\u30e1\u30a4\u30f3\u306b\u95a2\u3057\u3066\u306f\u52a0\u901f\u5ea6\u7684\u306b\u30e1\u30fc\u30eb\u5230\u9054\u7387\u304c\u60aa\u5316\u3057\u3066\u3057\u307e\u3046\u5371\u967a\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u969b\u306bGoogle\u3084\u653f\u5e9c\u3082DMARC\u306e\u5c0e\u5165\u304c\u5b8c\u4e86\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u524d\u63d0\u3068\u3057\u305f\u52d5\u304d\u304c\u59cb\u307e\u3063\u3066\u3044\u308b\u305f\u3081\u3001DMARC\u672a\u5c0e\u5165\u306e\u4f01\u696d\u306f\u3069\u3093\u3069\u3093\u82e6\u5883\u306b\u7acb\u305f\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u305f\u3081\u3001\u3053\u306e\u6d41\u308c\u306b\u4e57\u308a\u9045\u308c\u3066\u3057\u307e\u3046\u3068\u3001\u5148\u3093\u3058\u3066DMARC\u3092\u5c0e\u5165\u3057\u305f\u7af6\u5408\u4ed6\u793e\u306b\u5dee\u3092\u3064\u3051\u3089\u308c\u308b\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u65e9\u3081\u306e\u5bfe\u5fdc\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7279\u306bGmail\u30a2\u30ab\u30a6\u30f3\u30c8\u3078\u306e\u30e1\u30eb\u30de\u30ac\u3092\u914d\u4fe1\u3059\u308b\u696d\u8005\u306a\u3069\u306b\u95a2\u3057\u3066\u306f\u3001\u65e2\u306b\u5f71\u97ff\u304c\u51fa\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3082\u3042\u308a\u3001\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u58f2\u4e0a\u306b\u751a\u5927\u306a\u88ab\u5bb3\u304c\u53ca\u3093\u3067\u3057\u307e\u3046\u305f\u3081\u6700\u512a\u5148\u3067\u53d6\u308a\u7d44\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5148\u306bSPF\u3068DKIM\u306e\u8a2d\u5b9a\u304c\u5fc5\u8981<\/h3>\n\n\n\n<p>\u300cDMARC\u306f\u91cd\u8981\u300d\u3060\u3068\u3044\u3046\u8a71\u3092\u3057\u3066\u304d\u307e\u3057\u305f\u304c\u3001\u3054\u7d39\u4ecb\u306e\u901a\u308aDMARC\u3092\u5229\u7528\u3059\u308b\u306b\u306f<span class=\"kh-marker-red\">\u4e8b\u524d\u306bSPF\u3068DKIM\u306e\u8a2d\u5b9a\u3082\u5b8c\u4e86\u3055\u305b\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059<\/span>\u3002<\/p>\n\n\n\n<p>DMARC\u5bfe\u5fdc\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u5834\u5408\u306f\u3001\u57fa\u672c\u7684\u306bSPF\u3082DKIM\u3082\u5229\u7528\u3067\u304d\u308b\u74b0\u5883\u304c\u6574\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u5185\u88fd\u3067\u5c0e\u5165\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u304cSPF\u3068DKIM\u3082\u672a\u5bfe\u5fdc\u3068\u3044\u3046\u5834\u5408\u306b\u306f\u3001\u66f4\u306bDMARC\u5c0e\u5165\u306e\u96e3\u6613\u5ea6\u304c\u9ad8\u307e\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001DMARC\u5bfe\u5fdc\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u5951\u7d04\u3059\u308b\u5834\u5408\u306b\u3082\u3001\u8a2d\u5b9a\u624b\u9806\u3092\u9593\u9055\u3048\u308b\u3068\u4e0a\u624b\u304f\u52d5\u4f5c\u3057\u306a\u3044\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3057\u3063\u304b\u308a\u3068\u624b\u9806\u901a\u308a\u306b\u8a2d\u5b9a\u3092\u9032\u3081\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8a2d\u5b9a\u5f8c\u306b\u5fc5\u305a\u52d5\u4f5c\u78ba\u8a8d\u3092\u884c\u3046<\/h3>\n\n\n\n<p>DMARC\u306e\u5c0e\u5165\u3092\u884c\u3046\u5834\u5408\u3001\u81ea\u793e\u3067\u8a2d\u5b9a\u3059\u308b\u5834\u5408\u3067\u3042\u3063\u3066\u3082\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u5229\u7528\u3057\u3066\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d1\u30cd\u30eb\u304b\u3089\u8a2d\u5b9a\u3059\u308b\u5834\u5408\u3067\u3042\u3063\u3066\u3082\u3001<span class=\"kh-marker-red\">\u5fc5\u305a\u52d5\u4f5c\u78ba\u8a8d\u3068DMARC\u30ec\u30dd\u30fc\u30c8\u306e\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3046<\/span>\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u52d5\u4f5c\u78ba\u8a8d\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5f37\u5316\u304c\u9032\u3093\u3067\u3044\u308bGmail\u3084Yahoo!\u30e1\u30fc\u30eb\u3067\u306fDMARC\u306b\u3088\u308b\u8a8d\u8a3c\u304c\u65e2\u306b\u5c0e\u5165\u3055\u308c\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u305d\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306b\u30c6\u30b9\u30c8\u914d\u4fe1\u3092\u884c\u3046\u65b9\u6cd5\u304c\u78ba\u5b9f\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3057\u3066\u53d7\u4fe1\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u5c4a\u304f\u304b\u3069\u3046\u304b\u3001\u30d8\u30c3\u30c0\u30fc\u60c5\u5831\u3092\u78ba\u8a8d\u3057\u3066SPF\u3084DKIM\u3001DMARC\u306e\u8a8d\u8a3c\u304cPASS\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/yahoodmarc.jpg\" alt=\"Yahoo!\u30e1\u30fc\u30eb\u306e\u30e1\u30fc\u30eb\u8a8d\u8a3c\u753b\u9762\" class=\"wp-image-11825\"\/><figcaption class=\"wp-element-caption\">Yahoo!\u30e1\u30fc\u30eb\u3067\u78ba\u8a8d\u3067\u304d\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u753b\u9762<\/figcaption><\/figure>\n\n\n\n<p>\u4f75\u305b\u3066\u3001DMRAC\u5c0e\u5165\u306b\u3088\u308a\u78ba\u8a8d\u3067\u304d\u308b\u30ec\u30dd\u30fc\u30c8\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3053\u3068\u3067\u3001\u8a8d\u8a3c\u304c\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306e\u4e2d\u306b\u81ea\u793e\u304c\u9001\u3063\u305f\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u304c\u542b\u307e\u308c\u3066\u3044\u306a\u3044\u304b\u3082\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e07\u304c\u4e00\u3001\u8a2d\u5b9a\u5185\u306b\u3042\u308b\u30df\u30b9\u3092\u898b\u9003\u3057\u3066\u3057\u307e\u3046\u3068\u3001\u6298\u89d2DMARC\u3092\u5c0e\u5165\u3057\u3066\u3082\u305d\u306e\u8a2d\u5b9a\u3092\u8aa4\u308b\u3068\u5909\u308f\u3089\u305a\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u304c\u7d9a\u304f\u305f\u3081\u3001DMACR\u5c0e\u5165\u306e\u969b\u306b\u5fc5\u8981\u306a\u4f5c\u696d\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u5b8c\u5168\u306b\u9632\u6b62\u3067\u304d\u306a\u3044<\/h3>\n\n\n\n<p>DMARC\u306f\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u306b\u5bfe\u3057\u3066\u975e\u5e38\u306b\u6709\u52b9\u306a\u5bfe\u7b56\u3068\u306a\u308a\u307e\u3059\u304c\u3001\u305d\u308c\u3067\u3082<span 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