{"id":1406,"date":"2021-02-03T18:47:19","date_gmt":"2021-02-03T09:47:19","guid":{"rendered":"https:\/\/dtdrz8mlqwp80.cloudfront.net\/article\/uncategorized\/404\/"},"modified":"2024-02-21T13:25:20","modified_gmt":"2024-02-21T04:25:20","slug":"404","status":"publish","type":"post","link":"https:\/\/www.spiral-platform.co.jp\/article\/mail\/404\/","title":{"rendered":"\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u300cDMARC\u300d\u3067\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5165\u308c\u3055\u305b\u306a\u3044\uff01vol.3"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"\/article\/wp-content\/uploads\/sites\/3\/securityGFVL4065_TP_V.jpg\" alt=\"\u4e8c\u6bb5\u968e\u8a8d\u8a3c\" class=\"wp-image-4168\" style=\"width:600px\"\/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30e1\u30eb\u30de\u30ac\u8cfc\u8aad\u8005\u304b\u3089\u3001\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u3068\u554f\u3044\u5408\u308f\u305b\u3092\u53d7\u3051\u305f\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f<\/li>\n\n\n\n<li>\u30b9\u30d1\u30a4\u30e9\u30eb\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u8a2d\u5b9a\u306b\u3066\u3001\u9ec4\u8272\u4fe1\u53f7\u306e\u307e\u307e\u914d\u4fe1\u3057\u3066\u3044\u307e\u305b\u3093\u304b\uff1f<\/li>\n\n\n\n<li>\u3042\u306a\u305f\u306e\u7d44\u7e54\u306b\u306a\u308a\u3059\u307e\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u304c\u3069\u306e\u304f\u3089\u3044\u3042\u308b\u304b\u3001\u77e5\u3063\u3066\u3044\u307e\u3059\u304b\uff1f<\/li>\n<\/ul>\n\n\n\n<p>\u524d\u56de\u307e\u3067\u306e\u8a18\u4e8b\u306f\u3053\u3061\u3089\u304b\u3089\u3054\u89a7\u3044\u305f\u3060\u3051\u307e\u3059\u3002<br><a href=\"\/article\/mail\/398\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u7b2c1\u56de\u3000\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u300cDMARC\u300d\u306e\u6982\u8981<\/a><br><a href=\"\/article\/mail\/400\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u7b2c2\u56de\u3000\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u300cDMARC\u300d\u306e\u9001\u4fe1\u5074\u304a\u3088\u3073\u53d7\u4fe1\u5074\u306e\u5c0e\u5165\u72b6\u6cc1<\/a><\/p>\n\n\n\n<div class=\"solLink under_head\"><a href=\"\/solution\/mail\/\"><img src=\"https:\/\/www.spiral-platform.co.jp\/article\/wp-content\/uploads\/sites\/3\/common_img\/cnt_bnr_mail01x2.gif\"><\/a><\/div><h2 class=\"wp-block-heading\">\u9001\u3063\u305f\u30e1\u30fc\u30eb\u304c\u306a\u308a\u3059\u307e\u3057\u6271\u3044\u3055\u308c\u3066\u3044\u308b\u304b\u3082\uff1f\uff01<\/h2>\n\n\n\n<p>\u524d\u56de\u304a\u5c4a\u3051\u3057\u305f\u3088\u3046\u306b\u3001\u30e1\u30fc\u30eb\u53d7\u4fe1\u5074\u306e\u30d7\u30ed\u30d0\u30a4\u30c0\u3084\u30d5\u30ea\u30fc\u30e1\u30fc\u30eb\u304cDMARC\u306b\u5bfe\u5fdc\u3057\u3066\u304a\u308a\u3001\u4eca\u5f8c\u3082\u5bfe\u5fdc\u3059\u308b\u30b5\u30fc\u30d3\u30b9\u306f\u5897\u3048\u3066\u3044\u304f\u3068\u601d\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/about.yahoo.co.jp\/pr\/release\/2020\/01\/29a\/\" target=\"_blank\" rel=\"noreferrer noopener\">Yahoo!\u30e1\u30fc\u30eb\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u3068\u3057\u3066\u3001 \u7c73\u56fd\u306a\u3069\u30b0\u30ed\u30fc\u30d0\u30eb\u3067\u6d3b\u7528\u304c\u9032\u3080\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u300cDMARC\u300d\u3092 3\u6708\u3088\u308a\u9806\u6b21\u5c0e\u5165<\/a><\/p>\n\n\n\n<p>Gmail\u3067\u306f\u3001\u30e1\u30fc\u30eb\u9001\u4fe1\u5143\u306e\u30c9\u30e1\u30a4\u30f3\uff08\u4e0b\u8a18\u4f8b\u306exxx.smp.ne.jp\uff09\u3068\u5dee\u51fa\u4eba\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u30c9\u30e1\u30a4\u30f3\uff08\u4e0b\u8a18\u4f8b\u306eexample.com\uff09\u304c\u4e00\u81f4\u3057\u306a\u3044\u5834\u5408\u3001\u53d7\u4fe1\u8005\u5074\u3067\u6c17\u3065\u3051\u308b\u3088\u3046\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u300c\u7d4c\u7531\u300d\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\u3057\u3066\u3044\u306a\u3044\u30e1\u30fc\u30eb<\/h3>\n\n\n\n<p>\u30e1\u30c3\u30bb\u30fc\u30b8\u753b\u9762\u306b\u300c\u7d4c\u7531\u300d\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"\/article\/wp-content\/uploads\/sites\/3\/gmail_fail.png\" alt=\"\" class=\"wp-image-5799\" style=\"width:600px\"\/><\/figure>\n\n\n\n<p>\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30bd\u30fc\u30b9\u753b\u9762\u3067\u3001DMARC\u8a8d\u8a3c\u306f\u5931\u6557\uff08fail\uff09\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"\/article\/wp-content\/uploads\/sites\/3\/SS_dmarc_fail.png\" alt=\"\" class=\"wp-image-5803\" style=\"width:600px\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb<\/h3>\n\n\n\n<p>\u30e1\u30c3\u30bb\u30fc\u30b8\u753b\u9762\u306b\u300c\u7d4c\u7531\u300d\u304c\u8868\u793a\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/gmail_pass.png\" alt=\"\" class=\"wp-image-5800\" style=\"width:600px\"\/><\/figure>\n\n\n\n<p>\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30bd\u30fc\u30b9\u753b\u9762\u3067\u3001DMARC\u8a8d\u8a3c\u306f\u30d1\u30b9\uff08pass\uff09\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/SS_dmarc_pass.png\" alt=\"\" class=\"wp-image-5804\"\/><\/figure>\n\n\n\n<p>\u73fe\u6642\u70b9\u3067\u306f\u3055\u308a\u6c17\u306a\u3044\u6ce8\u610f\u559a\u8d77\u3067\u3059\u304c\u3001DMARC\u8a8d\u8a3c\u304c\u5931\u6557\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u4eca\u5f8c\u306f\u3082\u3063\u3068\u76ee\u7acb\u3064\u8868\u793a\u306b\u5909\u66f4\u3055\u308c\u3001\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u3057\u305f\u65b9\u306b\u4e0d\u5b89\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3046\u3057\u305f\u4e8b\u614b\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u3001 \u4eca\u56de\u306f\u3001DMARC\u306e\u5c0e\u5165\u306b\u5fc5\u8981\u306a\u3053\u3068\u3001\u5c0e\u5165\u3057\u305f\u5f8c\u306e\u904b\u7528\u306b\u3064\u3044\u3066\u304a\u5c4a\u3051\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b9\u30d1\u30a4\u30e9\u30eb\u5229\u7528\u8005\u304cDMARC\u8a8d\u8a3c\u3092\u30d1\u30b9\u3059\u308b\u305f\u3081\u306b\u306f<\/h2>\n\n\n\n<p>Express2\u3067\u30e1\u30fc\u30eb\u3092\u4e00\u6589\u914d\u4fe1\u3059\u308b\u6642\u3001DKIM\u7f72\u540d\u3092\u5fc5\u305a\u4ed8\u4e0e\u3057\u3066\u914d\u4fe1\u3044\u305f\u3057\u307e\u3059\u304c\u3001\u30b9\u30d1\u30a4\u30e9\u30eb\u306e\u30c9\u30e1\u30a4\u30f3\u300csmp.ne.jp\u300d\u3067\u7f72\u540d\u3057\u305fDKIM\u7f72\u540d\uff08\u7b2c\u4e09\u8005\u7f72\u540d\uff09\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001DMARC\u3067\u306f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u306e\u691c\u8a3c\u304c\u53b3\u683c\u306a\u305f\u3081\u3001\u8a8d\u8a3c\u7d50\u679c\u306f\u30d1\u30b9\u3057\u307e\u305b\u3093\uff08fail\u306b\u306a\u308a\u307e\u3059\uff09<\/p>\n\n\n\n<p>\u30b9\u30d1\u30a4\u30e9\u30eb\u306e\u914d\u4fe1\u8a2d\u5b9a\u753b\u9762\u3067\u306f\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u524d\u306b\u3001\u9001\u4fe1\u5143\u8a8d\u8a3c\u306b\u9ec4\u4fe1\u53f7<font color=\"yellow\">\u25cf<\/font>\u3092\u70b9\u706f\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/signal-yellow.png\" alt=\"\" class=\"wp-image-5802\" style=\"width:600px\"\/><figcaption class=\"wp-element-caption\">Express2\u914d\u4fe1\u5143\u8a8d\u8a3c\uff08\u9ec4\u4fe1\u53f7\uff09<\/figcaption><\/figure>\n\n\n\n<p>\u7b2c\u4e09\u8005\u304c\u3042\u306a\u305f\u306e\u7d44\u7e54\u30c9\u30e1\u30a4\u30f3\u306b\u306a\u308a\u3059\u307e\u3057\u3066\u30e1\u30fc\u30eb\u3092\u914d\u4fe1\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u53d7\u4fe1\u5074\u304b\u3089\u898b\u308b\u3068\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3082DMARC\u304cfail\u3001\u30b9\u30d1\u30a4\u30e9\u30eb\u304b\u3089\u306e\u30e1\u30fc\u30eb\u3082DMARC\u304cfail\u306b\u306a\u308a\u3001\u3069\u3061\u3089\u3082\u306a\u308a\u3059\u307e\u3057\u306b\u898b\u3048\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u3001\u30b9\u30d1\u30a4\u30e9\u30eb\u306eDKIM\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u306b\u3066\u3001\u30b9\u30d1\u30a4\u30e9\u30eb\u3067\u4f7f\u7528\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u3068\u3001\u3042\u306a\u305f\u306e\u7d44\u7e54\u30c9\u30e1\u30a4\u30f3\u3067\u7f72\u540d\u3057\u305fDKIM\u7f72\u540d\uff08\u4f5c\u6210\u8005\u7f72\u540d\uff09\u3092\u7d10\u4ed8\u3051\u308c\u3070\u3001\u53d7\u4fe1\u5074\u306b\u672c\u7269\u306e\u30e1\u30fc\u30eb\u3067\u3042\u308b\u3053\u3068\u3092\u8a3c\u660e\u3067\u304d\u3001DMARC\u306e\u8a8d\u8a3c\u7d50\u679c\u306f\u30d1\u30b9\uff08Pass\uff09\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>DKIM\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u306e\u4f7f\u3044\u65b9\u306f<a href=\"http:\/\/support.smp.ne.jp\/function\/91\" target=\"_blank\" rel=\"noreferrer noopener\">\u30b5\u30dd\u30fc\u30c8\u30b5\u30a4\u30c8<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>Express2\u914d\u4fe1\u8a2d\u5b9a\u753b\u9762\u3067\u9001\u4fe1\u5143\u8a8d\u8a3c\u304c\u9752\u4fe1\u53f7<font color=\"blue\">\u25cf<\/font>\u306b\u306a\u308c\u3070\u6210\u529f\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/signal-blue-1.png\" alt=\"\" class=\"wp-image-5801\" style=\"width:600px\"\/><figcaption class=\"wp-element-caption\">Express2\u914d\u4fe1\u8a2d\u5b9a\u753b\u9762\u306e\u9001\u4fe1\u5143\u8a8d\u8a3c\uff08\u9752\u4fe1\u53f7\uff09<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">DMARC\u304c\u8a8d\u8a3c\u5931\u6557\uff08fail\uff09\u306b\u306a\u308b\u30e1\u30fc\u30eb\u306b\u3064\u3044\u3066\u5bfe\u51e6\u3059\u308b<\/h2>\n\n\n\n<p>\u4f5c\u6210\u8005\u7f72\u540d\u306eDKIM\u7f72\u540d\u3067\u30e1\u30fc\u30eb\u3092\u914d\u4fe1\u3057\u3066\u3082\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u3092\u7d4c\u7531\u3059\u308b\u3046\u3061\u306b\u3001DKIM\u7f72\u540d\u304c\u58ca\u308c\u3066\u3001DMARC\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3059\u308b\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002<br>\u307e\u305f\u3001\u305d\u3082\u305d\u3082\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u3092\u306a\u308a\u3059\u307e\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u306f\u3001\u53d7\u4fe1\u5074\u3067\u8ff7\u60d1BOX\u306b\u5165\u308c\u305f\u308a\u3001\u53d7\u4fe1\u62d2\u5426\u3057\u3066\u3001\u672c\u7269\u306e\u30e1\u30fc\u30eb\u3060\u3051\u3092\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5165\u308c\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u304c\u671b\u307e\u3057\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/www.dekyo.or.jp\/soudan\/aspc\/wp.html\" target=\"_blank\" rel=\"noreferrer noopener\">\u8ff7\u60d1\u30e1\u30fc\u30eb\u767d\u66f82020<\/a>\uff08\u767a\u884c\uff1a\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u63a8\u9032\u5354\u8b70\u4f1a\uff09\u306e\u300c\u7b2c\uff13\u7ae0\u30c8\u30d4\u30c3\u30af\u30b9\uff1a\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\uff08SPF\u30fbDKIM\u30fbDMARC\u306a\u3069\uff09\u300d\u306b\u3088\u308c\u3070\u3001DMARC\u306e\u9577\u6240\u306f\u5c0e\u5165\u306e\u7c21\u5358\u3055\u3067\u3042\u308a\u3001\u5c0e\u5165\u30b3\u30b9\u30c8\u306f\u307b\u307c\u7686\u7121\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3082\u3057\u3001\u4e0a\u8a18\u306eDKIM\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u304c\u96e3\u3057\u304f\u3001\u9ec4\u8272\u4fe1\u53f7\u306e\u307e\u307e\u914d\u4fe1\u3059\u308b\u3057\u304b\u306a\u3044\u5834\u5408\u3067\u3082\u3001DMARC\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DMARC\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u3066\u307f\u3088\u3046\uff01<\/h2>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u3001\u3053\u3053\u3067DMARC\u306e\u4ed5\u7d44\u307f\u3092\u304a\u3055\u3089\u3044\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/01.jpg\" alt=\"\" class=\"wp-image-5797\"\/><\/figure>\n\n\n\n<p>\u7279\u5fb4\uff11\uff0e\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u3092\u7ba1\u7406\u3057\u3066\u3044\u308bDNS\u30b5\u30fc\u30d0\u306b\u3001\u53d7\u4fe1\u30e1\u30fc\u30eb\u306e\u53d6\u308a\u6271\u3044\u30dd\u30ea\u30b7\u30fc\u3092\u5ba3\u8a00\u3059\u308b\u3002\u30dd\u30ea\u30b7\u30fc\u306f3\u7a2e\u985e\u306e\u3069\u308c\u304b\u3092\u9078\u629e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">\u53d7\u4fe1\u30e1\u30fc\u30eb\u306e\u53d6\u308a\u6271\u3044<\/th><th>DNS\u306b\u8a18\u8ff0\u3059\u308b\u30dd\u30ea\u30b7\u30fc<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">\u4f55\u3082\u3057\u306a\u3044<\/td><td>p=none<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">\u9694\u96e2\u3059\u308b<\/td><td>p=quarantine<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">\u53d7\u4fe1\u62d2\u5426\u3059\u308b<\/td><td>p=reject<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u7279\u5fb4\uff12\uff0e\u53d7\u4fe1\u5074\u304c\u691c\u8a3c\u3057\u305f\u7d50\u679c\u3092\u30e1\u30fc\u30eb\u3067\u53d7\u3051\u53d6\u308c\u308b\u3002\u53d7\u3051\u53d6\u308c\u308b\u30e1\u30fc\u30eb\u306f2\u7a2e\u985e\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30ec\u30dd\u30fc\u30c8\u7a2e\u985e<\/th><th>\u30ec\u30dd\u30fc\u30c8\u5185\u5bb9<\/th><\/tr><\/thead><tbody><tr><td>rua\u30ec\u30dd\u30fc\u30c8<\/td><td>\u691c\u8a3c\u7d50\u679c\u306e\u7d71\u8a08\u30c7\u30fc\u30bf<br>\uff08SPF\u8a8d\u8a3c\u306b\u6210\u529f\u3057\u305f\u30e1\u30fc\u30eb\u306e\u901a\u6570\u306a\u3069\uff09<\/td><\/tr><tr><td>ruf\u30ec\u30dd\u30fc\u30c8<\/td><td>\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u5f53\u793e\u306e\u30c9\u30e1\u30a4\u30f3\u300cpi-pe.co.jp\u300d\u3067\u306f\u3001DNS\u30b5\u30fc\u30d0\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306bDMARC\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"box1\">\n    <code>\n    _dmarc. pi-pe.co.jp . 21058 IN TXT \"v= DMARC1 ; p=none ;\nrua=mailto: xxxxx@pi-pe.co.jp \"\n  <\/code>\n<\/div>\n\n\n\n<p>pi-pe.co.jp\u3000\u2192\u3000\u5f53\u793e\u304b\u3089\u30e1\u30fc\u30eb\u3092\u9001\u308b\u6642\u306e\u3001\u5dee\u51fa\u4eba\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u30c9\u30e1\u30a4\u30f3\u3067\u3059\u3002<br>DMARC1\u3000\u2192\u3000DMARC\u7528\u306e\u30ec\u30b3\u30fc\u30c9\u3067\u3042\u308b\u3053\u3068\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002<br>p=none\u3000\u2192\u3000\u53d7\u4fe1\u5074\u306b\u300c\u4f55\u3082\u3057\u306a\u3044\u3053\u3068\uff08\uff1d\u53d7\u4fe1\u3059\u308b\u3053\u3068\uff09\u300d\u3092\u304a\u9858\u3044\u3057\u3066\u3044\u307e\u3059\u3002<br>xxxxx@pi-pe.co.jp\u3000\u2192\u3000\u3053\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3067\u691c\u8a3c\u7d50\u679c\u3092\u53d7\u3051\u53d6\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>DMARC\u3092\u5c0e\u5165\u3059\u308b\u624b\u7d9a\u304d\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1.\u30dd\u30ea\u30b7\u30fc\u3092\u6c7a\u3081\u308b<\/h3>\n\n\n\n<p>DMARC\u306e\u8a8d\u8a3c\u3067NG\u3068\u306a\u3063\u305f\u30e1\u30fc\u30eb\u3092\u3001\u53d7\u4fe1\u5074\u3067\u3069\u306e\u3088\u3046\u306b\u6271\u3063\u3066\u6b32\u3057\u3044\u306e\u304b\u6c7a\u3081\u307e\u3059\u304c\u3001\u5c0e\u5165\u5f53\u521d\u306f\u69d8\u5b50\u3092\u898b\u308b\u305f\u3081\u306b\u3082\u300cp=none\u300d\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u7528\u610f\u3059\u308b<\/h3>\n\n\n\n<p>\u53d7\u4fe1\u5074\u304cDMARC\u306e\u30ec\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u53d6\u308b\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u7528\u610f\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.DNS\u30b5\u30fc\u30d0\u306eTXT\u30ec\u30b3\u30fc\u30c9\u306bDMARC\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b<\/h3>\n\n\n\n<p>\u3042\u306a\u305f\u306e\u7d44\u7e54\u3067\u4f7f\u7528\u3057\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u3084\u3001\u30b9\u30d1\u30a4\u30e9\u30eb\u304b\u3089\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u3067\u4f7f\u7528\u3057\u3066\u3044\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u3092\u78ba\u8a8d\u3057\u3066\u3001\u5f53\u8a72\u30c9\u30e1\u30a4\u30f3\u3092\u7ba1\u7406\u3057\u3066\u3044\u308bDNS\u30b5\u30fc\u30d0\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"box1\">\n    <code>\n    _dmarc. example.com . 21058 IN TXT \"v= DMARC1 ; p=none ;\nrua=mailto:xxxxx@example.com \"\n  <\/code>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u5c0e\u5165\u3057\u305f\u5f8c\u306f\u3069\u3046\u3059\u308c\u3070\u826f\u3044\u306e\uff1f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u30ec\u30dd\u30fc\u30c8\u3092\u5206\u6790\u3059\u308b<\/h3>\n\n\n\n<p>1\u65e5\u307b\u3069\u7d4c\u3064\u3068\u3001\u4e0a\u8a18\u3067\u7528\u610f\u3057\u305f\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u5b9b\u306b\u30ec\u30dd\u30fc\u30c8\u304c\u9001\u3089\u308c\u3066\u304f\u308b\u3068\u601d\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30e1\u30fc\u30eb\u306b\u6dfb\u4ed8\u3055\u308c\u305fXML\u30d5\u30a1\u30a4\u30eb\u306f\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u304c\u8aad\u307f\u53d6\u308b\u5f62\u5f0f\u306b\u306a\u3063\u3066\u3044\u3066\u3001\u5927\u898f\u6a21\u306b\u30e1\u30fc\u30eb\u914d\u4fe1\u3092\u3057\u3066\u3044\u308b\u7d44\u7e54\u3067\u3059\u3068\u3001\u30ec\u30dd\u30fc\u30c8\u306e\u91cf\u304c\u81a8\u5927\u306b\u306a\u308a\u3001\u76ee\u8996\u3067\u5206\u6790\u3059\u308b\u306b\u306f\u96e3\u3057\u3044\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u3001\u5c02\u7528\u306e\u5206\u6790\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002<br>\u5206\u6790\u30c4\u30fc\u30eb\u300c <a href=\"https:\/\/www.dmarc25.jp\/\" target=\"_blank\" rel=\"noreferrer noopener\">DMARC\/25<\/a>\u300d\uff08\u682a\u5f0f\u4f1a\u793eTwoFive\uff09\u3092\u4f7f\u7528\u3057\u3066\u3001 \u5f53\u793e\u306e\u30c9\u30e1\u30a4\u30f3\u300cpi-pe.co.jp\u300d\u3092\u8abf\u67fb\u3057\u3066\u307f\u307e\u3057\u305f\u3002<br>\u8abf\u67fb\u671f\u9593\uff1a2020\u5e7411\u670825\u65e5 &#8211; 2020\u5e7412\u67089\u65e5<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/dmarc25.png\" alt=\"\" class=\"wp-image-5798\" style=\"width:600px\"\/><\/figure>\n\n\n\n<p>DMARC\u30ec\u30dd\u30fc\u30c8\u3092\u30d9\u30fc\u30b9\u306b\u3057\u305f\u5834\u5408\u3001\u300cpi-pe.co.jp\u300d\u306b\u306a\u308a\u3059\u307e\u3057\u306e\u7591\u3044\u304c\u3042\u308b\u30e1\u30fc\u30eb\u304c55,374\u901a\u914d\u4fe1\u3055\u308c\u305f\u7d50\u679c\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u306a\u308a\u3059\u307e\u3057\u7591\u3044\u3001\u8a8d\u8a3c\u5931\u6557\u3092\u8abf\u3079\u308b<\/h3>\n\n\n\n<p>\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u3055\u308c\u305f\u9001\u4fe1\u5143\u3054\u3068\u306b\u3001\u30e1\u30fc\u30eb\u901a\u6570\u3084\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u7d50\u679c\u304c\u5206\u304b\u308b\u306e\u3067\u3001\u5168\u304f\u77e5\u3089\u306a\u3044\u9001\u4fe1\u5143\u3001\u306a\u308a\u3059\u307e\u3057\u3068\u306f\u8a00\u3048\u306a\u3044\u9001\u4fe1\u5143\u3092\u5207\u308a\u5206\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u8005\u304c\u628a\u63e1\u3057\u3066\u3044\u306a\u3044\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u3055\u308c\u308b\u4f8b\u3068\u3057\u3066\u3001\u7d44\u7e54\u306e\u30b9\u30bf\u30c3\u30d5\u304c\u696d\u52d9\u306e\u4e00\u74b0\u3067\u3001\u7d44\u7e54\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u3067\u306f\u306a\u304f\u3001\u5225\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u3092\u4f7f\u3063\u3066\u3001\u5dee\u51fa\u4eba\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u7d44\u7e54\u306e\u3082\u306e\u306b\u3057\u3066\u3001\u9867\u5ba2\u3078\u9001\u308b\u30b1\u30fc\u30b9\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u5834\u5408\u3001\u306a\u308a\u3059\u307e\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u5f53\u8a72\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u306e\u30ac\u30a4\u30c9\u306b\u5f93\u3063\u3066\u3001DMARC\u8a8d\u8a3c\u304c\u30d1\u30b9\u3059\u308b\u3088\u3046\u5bfe\u5fdc\u3057\u307e\u3059\u3002<br>\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u304c\u30b9\u30d1\u30a4\u30e9\u30eb\u306e\u5834\u5408\u3001\u672c\u8a18\u4e8b\u5185\u3067\u524d\u8ff0\u3057\u305f\u300c <a href=\"\/article\/mail\/404\/#DMARC\" target=\"_blank\" rel=\"noreferrer noopener\">\u30b9\u30d1\u30a4\u30e9\u30eb\u5229\u7528\u8005\u304cDMARC\u8a8d\u8a3c\u3092\u30d1\u30b9\u3059\u308b\u305f\u3081\u306b\u306f<\/a> \u300d\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3082\u3057\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u78ba\u8a8d\u3057\u305f\u3089\uff1f<\/h2>\n\n\n\n<p>\u7d44\u7e54\u3084\u30b5\u30fc\u30d3\u30b9\u306eWeb\u30b5\u30a4\u30c8\u4e0a\u3067\u3001\u300c\u5f53\u793e\u30c9\u30e1\u30a4\u30f3\u3092\u88c5\u3063\u305f\u4e0d\u5be9\u306a\u30e1\u30fc\u30eb\u306b\u3054\u6ce8\u610f\u304f\u3060\u3055\u3044\u300d\u3068\u3044\u3046\u304a\u77e5\u3089\u305b\u3092\u898b\u305f\u3053\u3068\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n\n\n\n<p>\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u53d7\u3051\u53d6\u3063\u305f\u53d7\u4fe1\u8005\u304c\u3001\u7d44\u7e54\u3084\u30b5\u30fc\u30d3\u30b9\u306eWeb\u30b5\u30a4\u30c8\u3092\u78ba\u8a8d\u3057\u305f\u5834\u5408\u3001\u6ce8\u610f\u559a\u8d77\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SPIRAL\u00ae 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class=\"wp-block-list\">\n<li>DMARC\u306e\u5c0e\u5165\u306f\u7c21\u53583\u30b9\u30c6\u30c3\u30d7\u3067\u3067\u304d\u308b\u3002<\/li>\n\n\n\n<li>\u5c0e\u5165\u5f8c\u306e\u30ec\u30dd\u30fc\u30c8\u89e3\u6790\u3092\u52a9\u3051\u3066\u304f\u308c\u308b\u5c02\u7528\u30c4\u30fc\u30eb\u304c\u3042\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<p>3\u56de\u306b\u308f\u305f\u3063\u3066\u3001DMARC\u306e\u7d39\u4ecb\u3092\u3057\u3066\u304d\u307e\u3057\u305f\u3002<br>\u78ba\u304b\u306b\u3001DMARC\u306e\u8a8d\u8a3c\u304c\u30d1\u30b9\u3057\u3066\u3044\u3066\u3082\u3001\u53d7\u4fe1\u5074\u306b\u3088\u308b\u30d5\u30a3\u30eb\u30bf\u8a2d\u5b9a\u306a\u3069\u306b\u3088\u308a\u3001\u30e1\u30fc\u30eb\u304c\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5165\u3089\u306a\u3044\u3053\u3068\u306f\u8d77\u3053\u308a\u5f97\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001DMARC\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u3042\u306a\u305f\u306e\u7d44\u7e54\u306b\u306a\u308a\u3059\u307e\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u3092\u6392\u9664\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u306e\u3067\u3001\u5c0e\u5165\u3092\u3054\u691c\u8a0e\u3044\u305f\u3060\u3051\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"box28\">\n    <span class=\"box-title\">\u904e\u53bb\u30ed\u30b0<\/span>\n    <p><a href=\"\/article\/mail\/398\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u300cDMARC\u300d\u3067\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5165\u308c\u3055\u305b\u306a\u3044\uff01vol.1<\/a><br><a href=\"\/article\/mail\/400\/\" target=\"_blank\" rel=\"noreferrer 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href=\"https:\/\/www.spiral-platform.co.jp\/article\/mail\/404\/\">[&#8230;\u7d9a\u304d\u3092\u8aad\u3080]<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[16],"tags":[45,56],"class_list":["post-1406","post","type-post","status-publish","format-standard","hentry","category-mail","tag-spiral-operation","tag-security"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u300cDMARC\u300d\u3067\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5165\u308c\u3055\u305b\u306a\u3044\uff01vol.3 | \u30b9\u30d1\u30a4\u30e9\u30eb\u682a\u5f0f\u4f1a\u793e<\/title>\n<meta name=\"description\" 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