{"id":36665,"date":"2022-09-09T16:55:23","date_gmt":"2022-09-09T07:55:23","guid":{"rendered":"https:\/\/kinsta.com\/jp\/?p=36665&#038;post_type=knowledgebase&#038;preview_id=36665"},"modified":"2025-10-02T04:49:09","modified_gmt":"2025-10-01T19:49:09","slug":"dmarc-fail","status":"publish","type":"post","link":"https:\/\/kinsta.com\/jp\/blog\/dmarc-fail\/","title":{"rendered":"\u30103\u3064\u306e\u65b9\u6cd5\u3011DMARC\u306e\u8a8d\u8a3c\u5931\u6557\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f"},"content":{"rendered":"<p><a href=\"https:\/\/kinsta.com\/blog\/email-marketing-best-practices\/\">\u30e1\u30fc\u30eb\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0<\/a>\u306f\u3001\u30d3\u30b8\u30cd\u30b9\u306b\u304a\u3044\u3066\u5f37\u529b\u306a\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u624b\u6bb5\u3002\u3068\u306f\u8a00\u3048\u3001\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3092\u5c55\u958b\u3057\u3066\u3082\u3001\u304d\u3061\u3093\u3068\u76f8\u624b\u306b\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u3055\u308c\u306a\u3051\u308c\u3070\u610f\u5473\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u30d0\u30a6\u30f3\u30b9\u30e1\u30fc\u30eb\u3092\u983b\u7e41\u306b\u53d7\u4fe1\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001DMARC\u306e\u8a8d\u8a3c\u5931\u6557\u3092\u89e3\u6c7a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<p>DMARC\u306f\u3001\u30b9\u30d1\u30e0\u3084\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u306b\u5bfe\u51e6\u3059\u308b\u305f\u3081\u306b\u4f5c\u6210\u3055\u308c\u305f<a href=\"https:\/\/kinsta.com\/jp\/blog\/email-authentication\/\">\u96fb\u5b50\u30e1\u30fc\u30eb\u8a8d\u8a3c<\/a>\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002DMARC\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u8868\u793a\u306f\u3001DMARC\u306b\u57fa\u3065\u304f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30c1\u30a7\u30c3\u30af\u306b\u4f55\u3089\u304b\u306e\u554f\u984c\u304c\u3042\u3063\u305f\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u5e78\u3044\u3001\u3053\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u3067\u304d\u308b\u3053\u3068\u304c\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001DMARC\u306e\u6982\u8981\u3068\u305d\u306e\u4ed5\u7d44\u307f\u3001\u305d\u3057\u3066\u8a8d\u8a3c\u5931\u6557\u306e\u539f\u56e0\u3092\u3054\u8aac\u660e\u3057\u305f\u5f8c\u3001\u89e3\u6c7a\u65b9\u6cd5\u30923\u3064\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002\u305d\u308c\u3067\u306f\u3001\u65e9\u901f\u59cb\u3081\u307e\u3057\u3087\u3046\u3002<\/p>\n<div><\/div><kinsta-auto-toc heading=\"Table of Contents\" exclude=\"last\" list-style=\"arrow\" selector=\"h2\" count-number=\"-1\"><\/kinsta-auto-toc>\n<h2>DMARC\u306e\u6982\u8981<\/h2>\n<p><a href=\"https:\/\/dmarc.org\/\" target=\"_blank\" rel=\"noopener noreferrer\">DMARC\u306f\u3001Domain-Based Message Authentication, Reporting &#038; Conformance<\/a>\uff08\u548c\u8a33\uff1a\u30c9\u30e1\u30a4\u30f3\u30d9\u30fc\u30b9\u306e\u8a8d\u8a3c\u3001\u30ec\u30dd\u30fc\u30c6\u30a3\u30f3\u30b0\u3068\u9069\u5408\uff09\u306e\u7565\u3067\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/spf-record\/\">Sender Policy Framework\uff08SPF\uff09<\/a>\u304a\u3088\u3073<a href=\"https:\/\/support.google.com\/a\/answer\/174124?hl=en\" target=\"_blank\" rel=\"noopener noreferrer\">DomainKeys Identified Mail\uff08DKIM\uff09<\/a>\u306b\u6e96\u62e0\u3057\u305f\u30e1\u30fc\u30eb\u8a8d\u8a3c\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002\u30e1\u30fc\u30eb\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3059\u308b\u4eba\u7269\u304c\u672c\u7269\u3067\u3042\u308a\u3001\u306a\u308a\u3059\u307e\u3057\u3084\u8a50\u6b3a\u3067\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<p>\u7c21\u5358\u306b\u8a00\u3048\u3070\u3001DMARC\u30a8\u30e9\u30fc\u3068\u3044\u3046\u306e\u306f\u3001\u9001\u4fe1\u30e1\u30fc\u30eb\u304cDMARC\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u3061\u306a\u307f\u306bDMARC\u306f\u3001\u307b\u3068\u3093\u3069\u306e<a href=\"https:\/\/kinsta.com\/blog\/email-marketing-software\/\">\u30e1\u30fc\u30eb\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2<\/a>\u3084\u30b5\u30fc\u30d3\u30b9\u3067\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>DMARC\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u8005\u304c\u3069\u306e\u3088\u3046\u306b\u51e6\u7406\u3059\u3079\u304d\u304b\u3092\u898f\u5b9a\u3057\u305f\u3082\u306e\u3068\u3057\u3066DMARC\u30dd\u30ea\u30b7\u30fc\u304c\u3042\u308a\u3001\u305d\u306e\u4e2d\u8eab\u306f\u4ee5\u4e0b\u306e3\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002<\/p>\n<ol start=\"1\">\n<li><strong>\u62d2\u5426\uff08reject\uff09<\/strong>\u2500\u5b8c\u5168\u306b\u62d2\u5426\u3055\u308c\u3066\u914d\u4fe1\u3055\u308c\u306a\u3044<\/li>\n<li><strong>\u9694\u96e2\uff08quarantine\uff09<\/strong>\u2500\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u914d\u4fe1<\/li>\n<li><strong>\u4f55\u3082\u3057\u306a\u3044\uff08none\uff09<\/strong>\u2500\u4f55\u3082\u51e6\u7406\u3055\u308c\u305a\u53d7\u4fe1\u8005\u3078\u305d\u306e\u307e\u307e\u914d\u4fe1<\/li>\n<\/ol>\n<p>DMARC\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u9001\u4fe1\u8005\u306e\u5b9f\u969b\u306e\u30a2\u30c9\u30ec\u30b9\u304c\u8868\u5411\u304d\u306e\u30c9\u30e1\u30a4\u30f3\u3068\u4e00\u81f4\u3057\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u306f\u69d8\u3005\u306a\u7406\u7531\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u304c\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u30e1\u30fc\u30eb\u304c\u507d\u9020\u3055\u308c\u3066\u3044\u308b\u3001\u307e\u305f\u306f<a href=\"https:\/\/kinsta.com\/blog\/ip-spoofing\/\">\u507d\u88c5\u3055\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9<\/a>\u304b\u3089\u9001\u4fe1\u3055\u308c\u3066\u3044\u308b\u306e\u304c\u539f\u56e0\u3067\u3059\u3002<\/p>\n<p>\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u306b\u306f\u3001\u6a5f\u5bc6\u60c5\u5831\u306e\u7a83\u53d6\u3084<a href=\"https:\/\/kinsta.com\/jp\/blog\/types-of-malware\/\">\u30de\u30eb\u30a6\u30a7\u30a2<\/a>\u306e\u62e1\u6563\u306a\u3069\u306e\u76ee\u7684\u304c\u3042\u308a\u3001\u975e\u5e38\u306b\u5371\u967a\u3067\u3059\u3002\u307e\u305f\u3001\u60aa\u610f\u306e\u3042\u308b\u30ea\u30f3\u30af\u306e\u30af\u30ea\u30c3\u30af\u304c\u8a98\u767a\u3055\u308c\u305f\u308a\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306b\u5bb3\u3092\u53ca\u307c\u3059\u30d5\u30a1\u30a4\u30eb\u304c\u6dfb\u4ed8\u3055\u308c\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n<p>\u8a50\u6b3a\u30e1\u30fc\u30eb\u306f\u3001\u5b9f\u969b\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u76d7\u7528\u306b\u8d77\u56e0\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u500b\u4eba\u60c5\u5831\u6f0f\u6d29\u3067\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304c\u6d41\u51fa\u3057\u305f\u308a\u3001\u8ab0\u304b\u306b\u30ed\u30b0\u30a4\u30f3\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u63a8\u6e2c\u3055\u308c\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u539f\u56e0\u3067\u3059\u3002<\/p>\n\n<h2>DMARC\u8a8d\u8a3c\u5931\u6557\u306e\u539f\u56e0<\/h2>\n<p>\u30e1\u30fc\u30eb\u304cDMARC\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3059\u308b\u539f\u56e0\u306f\u3001\u3044\u304f\u3064\u304b\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u6700\u3082\u4e00\u822c\u7684\u306a\u306e\u306f\u3001\u306a\u308a\u3059\u307e\u3057\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u306e\u9001\u4fe1\u3067\u3059\u304c\u3001\u305d\u308c\u4ee5\u5916\u306b\u3082\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7406\u7531\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u306e\u5931\u6557<\/strong>\u2500\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u304c\u3001\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u3068\u4e00\u81f4\u3057\u306a\u3044\u3002Gmail\u3084Outlook\u306a\u3069\u306e<a href=\"https:\/\/kinsta.com\/jp\/blog\/keep-email-and-hosting-separate\/\">\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9<\/a>\u306a\u3069\u3092\u4f7f\u7528\u3057\u3066\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u306f\u3053\u308c\u304c\u8003\u3048\u3089\u308c\u308b\u3002<\/li>\n<li><strong>\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u30e2\u30fc\u30c9\u304c\u4e0d\u9069\u5207<\/strong>\u2500\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u306f\u4e00\u81f4\u3059\u308b\u304c\u3001DMARC\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u3002<\/li>\n<li><strong>DKIM\u7f72\u540d\u306e\u8a2d\u5b9a\u304c\u3055\u308c\u3066\u3044\u306a\u3044<\/strong>\u2500DKIM\u7f72\u540d\uff08\u30e1\u30fc\u30eb\u304c\u6b63\u3057\u3044\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u9001\u4fe1\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\uff09\u304c\u306a\u3044\u3001\u3082\u3057\u304f\u306f\u7121\u52b9\u306a\u5834\u5408\u306b\u306f\u3001DMARC\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3059\u308b\u3053\u3068\u304c\u3042\u308b\u3002<\/li>\n<\/ul>\n<p>\u307e\u305f\u3001DNS\u306eTXT\u30ec\u30b3\u30fc\u30c9\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u306e\u304c\u539f\u56e0\u3067\u30a8\u30e9\u30fc\u304c\u8d77\u3053\u3063\u3066\u3044\u308b\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002TXT\u30ec\u30b3\u30fc\u30c9\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/what-is-dns\/\">\u30c9\u30e1\u30a4\u30f3\u30cd\u30fc\u30e0\u30b7\u30b9\u30c6\u30e0\uff08DNS\uff09<\/a>\u306b\u304a\u3051\u308b\u30c6\u30ad\u30b9\u30c8\u30d9\u30fc\u30b9\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u5148\u3067\u3082\u89e6\u308c\u307e\u3057\u305f\u304c\u3001DMARC\u30dd\u30ea\u30b7\u30fc\u3067\u306f\u3001SPF\u3068DKIM\u306e2\u3064\u306eTXT\u30ec\u30b3\u30fc\u30c9\u304c\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>DMARC\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5<\/h2>\n<p>DMARC\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f\u3001\u4e3b\u306b2\u3064\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u306e\u78ba\u8a8d<\/h3>\n<p><a href=\"https:\/\/kinsta.com\/jp\/blog\/email-header\/\">\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0<\/a>\u306f\u3001\u30e1\u30fc\u30eb\u9001\u4fe1\u6642\u306b\u4ed8\u52a0\u3055\u308c\u308b\u60c5\u5831\u3067\u3001\u9001\u4fe1\u8005\u306e<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/site-management\/ip-addresses\/#site-ip-address-ipv4\">IP\u30a2\u30c9\u30ec\u30b9<\/a>\u3001\u9001\u4fe1\u65e5\u6642\u3001\u306a\u3069\u306e\u8a73\u7d30\u60c5\u5831\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070Gmail\u306e\u5834\u5408\u3001\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u306f\u3001\u30e1\u30fc\u30eb\u306e\u53f3\u4e0a\u306b\u3042\u308b\u300c<strong>\u8fd4\u4fe1<\/strong>\u300d\u306e\u6a2a\u306b\u3042\u308b\u7e26\u4e09\u70b9\u30ea\u30fc\u30c0\u30fc\u3092\u9078\u629e\u3057\u3066\u3001\u300c<strong>\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30bd\u30fc\u30b9\u3092\u8868\u793a<\/strong>\u300d\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure style=\"width: 904px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2022\/09\/email-show-original.jpg\" alt=\"Select the \u2018Show original\u2019 option in Gmail\" width=\"904\" height=\"481\"><figcaption class=\"wp-caption-text\">Gmail\u306e\u300c\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30bd\u30fc\u30b9\u3092\u8868\u793a\u300d\u3092\u30af\u30ea\u30c3\u30af<\/figcaption><\/figure>\n<p>\u3059\u308b\u3068\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u8a73\u7d30\u60c5\u5831\u304c\u8868\u793a\u3055\u308c\u3001DMARC\u306e\u300cPASS\uff08\u5408\u683c\uff09\u300d\u304b\u300cFAIL\uff08\u4e0d\u5408\u683c\uff09\u300d\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_131919\" aria-describedby=\"caption-attachment-131919\" style=\"width: 988px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-131919 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2022\/09\/dmarc-failed.png\" alt=\"Viewing an original email header for a DMARC fail message\" width=\"988\" height=\"524\"><figcaption id=\"caption-attachment-131919\" class=\"wp-caption-text\">DMARC\u306e\u5931\u6557\u3092\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30bd\u30fc\u30b9\u3067\u78ba\u8a8d<\/figcaption><\/figure>\n<p>\u4e0a\u8a18\u306f\u3001DMARC\u306e\u8a8d\u8a3c\u304c\u6210\u529f\u3057\u3066\u3044\u308b\u4f8b\u3067\u3059\u3002\u300c<strong>DMARC:<\/strong>\u300d\u304c\u300c<strong>FAIL<\/strong>\u300d\u3068\u8868\u793a\u3055\u308c\u308b\u5834\u5408\u306f\u3001\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n<p>Outlook\u306e\u5834\u5408\u306f\u3001\u30e1\u30fc\u30eb\u306e\u53f3\u4e0a\u306b\u3042\u308b\u4e09\u70b9\u30ea\u30fc\u30c0\u30fc\u3092\u9078\u629e\u3057\u3001\u300c<strong>\u8868\u793a<\/strong>\u300d\uff1e\u300c<strong>\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u8a73\u7d30\u3092\u8868\u793a<\/strong>\u300d\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u4e0b\u307e\u3067\u30b9\u30af\u30ed\u30fc\u30eb\u3057\u3066\u3001\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>DMARC\u89e3\u6790\u30fb\u30ec\u30dd\u30fc\u30c8\u30c4\u30fc\u30eb\u306e\u4f7f\u7528<\/h3>\n<p>DMARC\u306e\u8a8d\u8a3c\u78ba\u8a8d\u306f\u3001<a href=\"https:\/\/toolbox.googleapps.com\/apps\/messageheader\/\" target=\"_blank\" rel=\"noopener noreferrer\">Google Admin Toolbox Messageheader<\/a>\u3092\u5229\u7528\u3057\u3066\u7c21\u6613\u5316\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure style=\"width: 1169px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2022\/09\/google-messageheader-tool.png\" alt=\"You can use the the Google Admin Toolbox Messageheader tool\" width=\"1169\" height=\"496\"><figcaption class=\"wp-caption-text\">Google Admin Toolbox Messageheader<\/figcaption><\/figure>\n<p>\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u3092\u5165\u529b\u3057\u3001\u300c<strong>\u4e0a\u8a18\u306e\u30d8\u30c3\u30c0\u30fc\u3092\u5206\u6790<\/strong>\u300d\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3060\u3051\u3067\u3001SPF\u3001DKIM\u3001DMARC\u306e\u8a8d\u8a3c\u7d50\u679c\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u5229\u7528\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306e<a href=\"https:\/\/support.google.com\/a\/answer\/10032472\" target=\"_blank\" rel=\"noopener noreferrer\">DMARC\u30ec\u30dd\u30fc\u30c8\u89e3\u6790<\/a>\u3067\u3001DMARC\u306e\u8a8d\u8a3c\u7d50\u679c\u3092\u8abf\u3079\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306b\u306f\u3001\u9001\u4fe1\u8005\u3001\u53d7\u4fe1\u8005\u3001\u5931\u6557\u306e\u539f\u56e0\u306a\u3069\u306e\u60c5\u5831\u304c\u8a18\u8f09\u3055\u308c\u305f\u30ec\u30dd\u30fc\u30c8\u304c\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30c7\u30fc\u30bf\u306f\u3001\u554f\u984c\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3084\u30e1\u30fc\u30eb\u306e\u914d\u4fe1\u6027\u3092\u9ad8\u3081\u308b\u306e\u306b\u6709\u7528\u3067\u3001\u901a\u5e381\u65e5\u306b1\u56de\u3001DMARC\u30ec\u30b3\u30fc\u30c9\u306e\u5b9a\u7fa9\u6642\u306b\u8a2d\u5b9a\u3057\u305f\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u9001\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>DNS\u8a2d\u5b9a\u306b<a href=\"https:\/\/kinsta.com\/jp\/blog\/spf-record\/\">TXT\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0<\/a>\u3059\u308b\u3068\u3001DMARC\u306e\u969c\u5bb3\u30ec\u30dd\u30fc\u30c8\u3092\u898b\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u5fc5\u8981\u306aDNS\u30ec\u30b3\u30fc\u30c9\u306e\u751f\u6210\u306b\u3064\u3044\u3066\u306e\u5177\u4f53\u7684\u306a\u624b\u9806\u306f\u3001\u5229\u7528\u3057\u3066\u3044\u308b\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3084\u30b5\u30dd\u30fc\u30c8\u3067\u76f4\u63a5\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001ActiveCampaign\u306e<a href=\"https:\/\/www.activecampaign.com\/dkim-spf-check\/\" target=\"_blank\" rel=\"noopener noreferrer\">DMARC DNS Verification Tool<\/a>\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure style=\"width: 1125px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2022\/09\/activecampaign-dns-verification.png\" alt=\"The ActiveCampaign DMARC DNS Verification tool website homepage\" width=\"1125\" height=\"539\"><figcaption class=\"wp-caption-text\">ActiveCampaign\u306eDMARC DNS Verification Tool<\/figcaption><\/figure>\n<p>\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3068\u3001\u30e1\u30fc\u30eb\u53d7\u4fe1\u8005\u304b\u3089\u6307\u5b9a\u3057\u305f\u30a2\u30c9\u30ec\u30b9\u306b\u969c\u5bb3\u30ec\u30dd\u30fc\u30c8\u304c\u914d\u4fe1\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30ec\u30dd\u30fc\u30c8\u3092\u5143\u306b\u3001\u9001\u4fe1\u30a8\u30e9\u30fc\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u884c\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>DMARC\u306e\u8a8d\u8a3c\u5931\u6557\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\uff083\u3064\u306e\u65b9\u6cd5\uff09<\/h2>\n<p>DMARC\u30a8\u30e9\u30fc\u3068\u305d\u306e\u539f\u56e0\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u7406\u89e3\u3057\u305f\u3068\u3053\u308d\u3067\u3001\u6b21\u306f\u305d\u306e\u89e3\u6c7a\u7b56\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002DMARC\u306e\u8a8d\u8a3c\u5931\u6557\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306e3\u3064\u306e\u65b9\u6cd5\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h3>1. SPF\/DKIM\u8a8d\u8a3c\u3092\u6709\u52b9\u5316\u3059\u308b<\/h3>\n<p><a href=\"https:\/\/kinsta.com\/jp\/blog\/why-are-my-emails-going-to-spam\/\">\u30e1\u30fc\u30eb\u914d\u4fe1\u30a8\u30e9\u30fc<\/a>\u3092\u907f\u3051\u308b\u306b\u306f\u3001DMARC\u306e\u524d\u306b\u3001\u307e\u305aSPF\u3068DKIM\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u30c9\u30e1\u30a4\u30f3\u306eDKIM\u7f72\u540d\u3092\u8a2d\u5b9a\u3057\u306a\u3044\u9650\u308a\u3001\u4e00\u822c\u7684\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u3001\u9001\u4fe1\u30e1\u30fc\u30eb\u306b\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u7f72\u540d\u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3059\uff08\u4f8b\u3048\u3070Gmail\u306e\u300cd=domain.gappssmtp.com\u300d\uff09\u3002<\/p>\n<p>\u3064\u307e\u308a\u3001\u30e1\u30fc\u30eb\u306e\u30d8\u30c3\u30c0\u306b\u3042\u308bFrom\u306e\u30c9\u30e1\u30a4\u30f3\u3068\u4e00\u81f4\u3057\u306a\u3044\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002SPF\/DKIM\u30ec\u30b3\u30fc\u30c9\u3068DNS\u30b5\u30fc\u30d3\u30b9\u306e\u5185\u5bb9\u3092\u4e00\u81f4\u3055\u305b\u308b\u306b\u306f\u3001DNS\u8a2d\u5b9a\u306b\u6b21\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3092\u8cbc\u308a\u4ed8\u3051\u307e\u3059\u3002<\/p>\n<pre><code>SPF: \"v=spf1 include:_spf.google.com ~all\"<\/code><\/pre>\n<pre><code>DKIM: \"v=DKIM1; k=rsa; p=[public key]\"<\/code><\/pre>\n<p>\u6b21\u306b\u3001\u4ee5\u4e0b\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3092DNS\u8a2d\u5b9a\u306b\u8ffd\u52a0\u3057\u3001DMARC\u306e\u8a2d\u5b9a\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n<pre><code>DMARC: \"v=DMARC1; p=reject; sp=quarantine; rua=mailto:postmaster@example.com\"<\/code><\/pre>\n<p>\u300cexample.com\u300d\u306e\u90e8\u5206\u306f\u3001\u5b9f\u969b\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u306b\u7f6e\u304d\u63db\u3048\u307e\u3057\u3087\u3046\u3002\u3053\u306e\u30ec\u30b3\u30fc\u30c9\u306e\u7de8\u96c6\u5834\u6240\u306b\u3064\u3044\u3066\u306f\u3001\u5229\u7528\u3057\u3066\u3044\u308bDNS\u30b5\u30fc\u30d3\u30b9\u306b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>Kinsta DNS\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/wordpress-domains\/dns\/\">MyKinsta<\/a>\u304b\u3089<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/wordpress-domains\/dns\/\">DNS\u30ec\u30b3\u30fc\u30c9<\/a>\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Kinsta\u306e\u5c02\u7528\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d1\u30cd\u30eb\u306b\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/apm-tool\/\">\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u76e3\u8996\uff08APM\uff09\u30c4\u30fc\u30eb<\/a>\u306a\u3069\u3001\u554f\u984c\u3092\u7ba1\u7406\u30fb\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3067\u304d\u308b\u6a5f\u80fd\u3068\u30c4\u30fc\u30eb\u304c\u8c4a\u5bcc\u306b\u63c3\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30b5\u30a4\u30c8\u3092\u9078\u629e\u3057\u305f\u5f8c\u3001\u300c<strong>Kinsta DNS<\/strong>\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_37495\" aria-describedby=\"caption-attachment-37495\" style=\"width: 2880px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-37495 size-full\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/mykinsta-dns-txt-jp.png\" alt=\"MyKinsta\u3067DNS\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\" width=\"2880\" height=\"1642\" srcset=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/mykinsta-dns-txt-jp.png 2880w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/mykinsta-dns-txt-jp-300x171.png 300w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/mykinsta-dns-txt-jp-1024x584.png 1024w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/mykinsta-dns-txt-jp-768x438.png 768w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/mykinsta-dns-txt-jp-1536x876.png 1536w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/mykinsta-dns-txt-jp-2048x1168.png 2048w\" sizes=\"auto, (max-width: 2880px) 100vw, 2880px\" \/><figcaption id=\"caption-attachment-37495\" class=\"wp-caption-text\">MyKinsta\u3067DNS\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0<\/figcaption><\/figure>\n<p>\u300c<strong>\u30bf\u30a4\u30d7<\/strong>\u300d\u5217\u3067\u300c<strong>TXT<\/strong>\u300d\u30ec\u30b3\u30fc\u30c9\u3092\u691c\u7d22\u3057\u307e\u3059\u3002<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/wordpress-domains\/dns\/#how-to-add-an-spf-record-for-mailchannels\">SPF\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0<\/a>\u3059\u308b\u5834\u5408\u306f\u3001MailChannels\u3067\u884c\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u306a\u304a\u3001\u500b\u5225\u306eDKIM\u30ec\u30b3\u30fc\u30c9\u306f\u8ffd\u52a0\u3067\u304d\u307e\u305b\u3093\uff08CNAME\/TXT\u30ec\u30b3\u30fc\u30c9\u306e\u307f\uff09\u3002<\/p>\n<h3>2. DMARC\u30dd\u30ea\u30b7\u30fc\u3092\u5909\u66f4\u3059\u308b<\/h3>\n<p>\u3053\u306e\u8a18\u4e8b\u306e\u5192\u982d\u3067\u3082\u89e6\u308c\u307e\u3057\u305f\u304c\u3001\u30e1\u30fc\u30eb\u304cDMARC\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u5834\u5408\u306e\u51e6\u7406\u65b9\u6cd5\u306b\u306f\u3001\u62d2\u5426\uff08reject\uff09\u3001\u9694\u96e2\uff08quarantine\uff09\u3001\u4f55\u3082\u3057\u306a\u3044\uff08none\uff09\u306e3\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002\u30dd\u30ea\u30b7\u30fc\u30ec\u30b3\u30fc\u30c9\uff08p=\uff09\u3092\u300cnone\u300d\u306b\u3059\u308b\u3068\u3001\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u3066\u3082\u3001\u30e1\u30fc\u30eb\u306f\u53d7\u4fe1\u8005\u306e\u53d7\u4fe1\u7bb1\u306b\u914d\u4fe1\u3055\u308c\u307e\u3059\u3002\u300creject\u300d\u306e\u5834\u5408\u306f\u81ea\u5206\u306b\u30d0\u30a6\u30f3\u30b9\u30e1\u30fc\u30eb\u304c\u5c4a\u304d\u3001\u300cquarantinie\u300d\u306e\u5834\u5408\u306f\u53d7\u4fe1\u8005\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u914d\u4fe1\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u89e3\u6c7a\u7b56\u306f\u3001DMARC\u30dd\u30ea\u30b7\u30fc\u30ec\u30b3\u30fc\u30c9\u3092\u300cp=none\u300d\u306b\u5909\u66f4\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u4ee5\u4e0b\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3092DNS\u8a2d\u5b9a\u306b\u8cbc\u308a\u4ed8\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre><code>DMARC: \"v=DMARC1; p=none; sp=quarantine; rua=mailto:postmaster@example.com\"<\/code><\/pre>\n<p>\u3053\u306e\u5834\u5408\u3082\u3001\u300cexample.com\u300d\u306e\u90e8\u5206\u306f\u3001\u5fd8\u308c\u305a\u306b\u5b9f\u969b\u306e<a href=\"https:\/\/kinsta.com\/blog\/choose-domain-name\/\">\u30c9\u30e1\u30a4\u30f3\u540d<\/a>\u306b\u7f6e\u304d\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u3002\u306a\u304a\u3001\u300cnone\u300d\u30dd\u30ea\u30b7\u30fc\u306f\u6700\u3082\u5b89\u5168\u306a\u9078\u629e\u80a2\u3068\u306f\u8a00\u3048\u306a\u3044\u305f\u3081\u3001\u4e00\u6642\u7684\u306a\u89e3\u6c7a\u7b56\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u306e\u304c\u8ce2\u660e\u3067\u3059\u3002<\/p>\n<h3>3. \u30c9\u30e1\u30a4\u30f3\u306e\u8a8d\u8a3c\u3092\u884c\u3046<\/h3>\n<p><a href=\"https:\/\/kinsta.com\/jp\/blog\/how-to-use-mailchimp\/\">Mailchimp<\/a>\u306a\u3069\u306e\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u4f7f\u3063\u3066\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30e1\u30fc\u30eb\u3084<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/mykinsta-tools\/email\/\">\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30e1\u30fc\u30eb<\/a>\u3092\u9001\u4fe1\u3059\u308b\u5834\u5408\u306f\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u304c\u81ea\u5206\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u3092\u8a31\u53ef\u3059\u308b\u3088\u3046\u306bDNS\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002DNS\u306e\u30a8\u30f3\u30c8\u30ea\u3092DNS\u30b5\u30fc\u30d0\u30fc\u306b\u7d10\u4ed8\u3051\u308b\u3068\u3001\u7279\u5b9a\u306e\u30b5\u30fc\u30d0\u30fc\u3092\u8a8d\u8a3c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306b\u306f\u3001\u307e\u305a\u30c9\u30e1\u30a4\u30f3\u306e\u8a8d\u8a3c\u304c\u5fc5\u8981\u3067\u3059\u3002\u307e\u305f\u3001\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u3001Google\u306a\u3069\u306e\u4e00\u822c\u30b5\u30fc\u30d3\u30b9\u306e\u30c9\u30e1\u30a4\u30f3\u3067\u306f\u306a\u304f\u3001\u81ea\u5206\u307e\u305f\u306f\u81ea\u793e\u306e\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u306e\u307f\u6709\u52b9\u3067\u3059\u3002<\/p>\n<p>\u30c9\u30e1\u30a4\u30f3\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u898b\u3064\u3051\u305f\u3089\u3001Mailchimp\uff08\u307e\u305f\u306f\u5229\u7528\u3057\u3066\u3044\u308b\u30c4\u30fc\u30eb\uff09\u306e\u60c5\u5831\u3092\u30c9\u30e1\u30a4\u30f3\u306eCNAME\u30ec\u30b3\u30fc\u30c9\u306b\u30b3\u30d4\u30fc\uff06\u30da\u30fc\u30b9\u30c8\u3057\u307e\u3059\u3002\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\u3084\u30b5\u30fc\u30d3\u30b9\u306b\u3088\u3063\u3066\u3001\u5fc5\u8981\u306a\u60c5\u5831\u3084\u5177\u4f53\u7684\u306a\u624b\u9806\u304c\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308b\u305f\u3081\u3001\u8a73\u7d30\u306b\u95a2\u3057\u3066\u306f\u3001\u5229\u7528\u3057\u3066\u3044\u308b\u30b5\u30fc\u30d3\u30b9\u306e\u8aac\u660e\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><a href=\"https:\/\/kinsta.com\/jp\/blog\/best-domain-registrar\/\">\u30c9\u30e1\u30a4\u30f3\u30ec\u30b8\u30b9\u30c8\u30e9<\/a>\u306e\u7ba1\u7406\u753b\u9762\u306b\u30ed\u30b0\u30a4\u30f3\u3059\u308b\u3068\u3001\u30c9\u30e1\u30a4\u30f3\u30ec\u30b3\u30fc\u30c9\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<a href=\"https:\/\/kinsta.com\/jp\/blog\/what-is-cpanel\/\">cPanel<\/a>\u307e\u305f\u306fPlesk\u304c\u4e00\u822c\u7684\u3067\u3059\u304c\u3001Kinsta\u3067\u3042\u308c\u3070\u3001<a href=\"https:\/\/kinsta.com\/blog\/manage-multiple-wordpress-sites\/\">MyKinsta<\/a>\u306b\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u300c<strong>Kinsta DNS<\/strong>\u300d\u3092\u9078\u629e\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_37497\" aria-describedby=\"caption-attachment-37497\" style=\"width: 2880px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-37497 size-full\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/mykinsta-dns-records-jp.png\" alt=\"MyKinsta\u306eDNS\u30ec\u30b3\u30fc\u30c9\" width=\"2880\" height=\"1642\" srcset=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/mykinsta-dns-records-jp.png 2880w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/mykinsta-dns-records-jp-300x171.png 300w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/mykinsta-dns-records-jp-1024x584.png 1024w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/mykinsta-dns-records-jp-768x438.png 768w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/mykinsta-dns-records-jp-1536x876.png 1536w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/mykinsta-dns-records-jp-2048x1168.png 2048w\" sizes=\"auto, (max-width: 2880px) 100vw, 2880px\" \/><figcaption id=\"caption-attachment-37497\" class=\"wp-caption-text\">MyKinsta\u306eDNS\u30ec\u30b3\u30fc\u30c9<\/figcaption><\/figure>\n<p>\u30c9\u30e1\u30a4\u30f3\u30ec\u30b3\u30fc\u30c9\u3092\u78ba\u8a8d\u3057\u305f\u3089\u3001Mailchimp\u306b\u623b\u308a\u3001\u624b\u9806\u306b\u5f93\u3063\u3066\u3001<a href=\"https:\/\/mailchimp.com\/help\/set-up-email-domain-authentication\/\" target=\"_blank\" rel=\"noopener noreferrer\">CNAME\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u30c9\u30e1\u30a4\u30f3\u3092\u8a8d\u8a3c<\/a>\u3057\u307e\u3059\u3002\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306b\u3088\u308a\u3001\u30ec\u30b3\u30fc\u30c9\u304c\u6b63\u78ba\u3067\u3042\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u308b\u3068\u3001\u305d\u306e\u65e8\u3092\u4f1d\u3048\u308b\u30e1\u30fc\u30eb\u304c\u5c4a\u304d\u307e\u3059\u3002<\/p>\n<h2>\u305d\u306e\u4ed6\u306e\u5bfe\u7b56<\/h2>\n<p>DMARC\u3001SPF\u3001DKIM\u306b\u554f\u984c\u304c\u306a\u3044\u3088\u3046\u306a\u3089\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/why-are-my-emails-going-to-spam\/\">\u30e1\u30fc\u30eb\u304c\u30b9\u30d1\u30e0\u3068\u3057\u3066\u9001\u4fe1<\/a>\u3055\u308c\u3066\u3044\u308b\u4ed6\u306e\u7406\u7531\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u9069\u5207\u306a\u30e1\u30fc\u30eb\u914d\u4fe1\u3001\u307e\u305f\u306f\u30e1\u30fc\u30eb\u9001\u4fe1\u306e\u5168\u4f53\u7684\u306a\u624b\u9806\u306e\u6539\u5584\u306e\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u3092\u5b9f\u8df5\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li>\u4fe1\u983c\u6027\u304c\u9ad8\u304f<a href=\"https:\/\/kinsta.com\/jp\/blog\/secure-email-providers\/\">\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9<\/a>\u3092\u5229\u7528\u3059\u308b<\/li>\n<li>\u30e1\u30fc\u30eb\u30ea\u30b9\u30c8\u3092\u5b9a\u671f\u7684\u306b\u7ba1\u7406\u3057\u3066\u5e38\u306b\u6700\u65b0\u306e\u72b6\u614b\u306b\u3059\u308b<\/li>\n<li>\u4ef6\u540d\u306b<a href=\"https:\/\/blog.hubspot.com\/blog\/tabid\/6307\/bid\/30684\/the-ultimate-list-of-email-spam-trigger-words.aspx\" target=\"_blank\" rel=\"noopener noreferrer\">\u30c8\u30ea\u30ac\u30fc\u3068\u306a\u308b\uff08\u30b9\u30d1\u30e0\u3068\u307f\u306a\u3055\u308c\u3084\u3059\u304f\u306a\u308b\uff09\u5358\u8a9e\u3084\u30d5\u30ec\u30fc\u30ba<\/a>\u3092\u4f7f\u7528\u3057\u306a\u3044<\/li>\n<li>\u5dee\u51fa\u4eba\u306e\u540d\u524d\u3068\u30a2\u30c9\u30ec\u30b9\u3092\u7d71\u4e00\u3059\u308b<\/li>\n<\/ul>\n<p>DMARC\u30a8\u30e9\u30fc\u304c\u7d9a\u304f\u5834\u5408\u3001\u7279\u306b\u305d\u308c\u304c\u7279\u5b9a\u306e\u53d7\u4fe1\u8005\u306b\u5bfe\u3057\u3066\u767a\u751f\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u76f4\u63a5\u9023\u7d61\u3092\u53d6\u308a\u3001\u81ea\u5206\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u53d7\u4fe1\u8a31\u53ef\u30ea\u30b9\u30c8\u306b\u8ffd\u52a0\u3057\u3066\u3082\u3089\u3046\u3088\u3046\u304a\u9858\u3044\u3059\u308b\u306e\u3082\u624b\u3067\u3059\u3002<\/p>\n\n<h2>\u307e\u3068\u3081<\/h2>\n<p><a href=\"https:\/\/kinsta.com\/blog\/work-from-home-security\/\">\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u3084\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u8a50\u6b3a<\/a>\u304c\u983b\u7e41\u306b\u8d77\u3053\u308b\u73fe\u4ee3\u3067\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u9075\u5b88\u3059\u308b\u3053\u3068\u304c\u6b20\u304b\u305b\u307e\u305b\u3093\u3002DMARC\u306f\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u306a\u3069\u306e\u8a50\u6b3a\u30e1\u30fc\u30eb\u304b\u3089\u53d7\u4fe1\u8005\u3092\u4fdd\u8b77\u3059\u308b\u30e1\u30fc\u30eb\u8a8d\u8a3c\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u304c\u3001\u5b8c\u74a7\u306a\u89e3\u6c7a\u7b56\u3068\u306f\u8a00\u3048\u307e\u305b\u3093\u3002<\/p>\n<p>DMARC\u8a8d\u8a3c\u5931\u6557\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u4f55\u5ea6\u3082\u8868\u793a\u3055\u308c\u3066\u3057\u307e\u3046\u5834\u5408\u3067\u3082\u3001\u5927\u4e08\u592b\u3002\u89e3\u6c7a\u65b9\u6cd5\u3084\u5bfe\u7b56\u306f\u3042\u308a\u307e\u3059\u3002SPF\u3068DKIM\u8a8d\u8a3c\u306e\u6709\u52b9\u5316\u3001DMARC\u30dd\u30ea\u30b7\u30fc\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30fc\u30eb\u306e\u914d\u4fe1\u6027\u3092\u9ad8\u3081\u3001\u30e1\u30fc\u30eb\u304c\u30b9\u30d1\u30e0\u30d5\u30a9\u30eb\u30c0\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u3066\u3057\u307e\u3046\u306e\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3084\u30e1\u30fc\u30eb\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3092\u8ce2\u304f\u7ba1\u7406\u30fb\u76e3\u8996\u3067\u304d\u308b\u30b5\u30fc\u30d0\u30fc\u3092\u304a\u63a2\u3057\u3067\u3059\u304b\uff1f<a href=\"https:\/\/kinsta.com\/jp\/pricing\/\">Kinsta\u306e\u30af\u30e9\u30a6\u30c9\u30b5\u30fc\u30d0\u30fc\u30d7\u30e9\u30f3<\/a>\u3068<a href=\"https:\/\/kinsta.com\/jp\/wordpress-hosting\/migration\/\">\u7121\u6599\u306e\u30b5\u30a4\u30c8\u79fb\u884c<\/a>\u306e\u8a73\u7d30\u3092\u305c\u3072\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30e1\u30fc\u30eb\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u306f\u3001\u30d3\u30b8\u30cd\u30b9\u306b\u304a\u3044\u3066\u5f37\u529b\u306a\u30de\u30fc\u30b1 &#8230;<\/p>\n","protected":false},"author":117,"featured_media":36666,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[583,371,584],"topic":[767],"class_list":["post-36665","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","tag-dmarc","tag-email-deliverability","tag-errors","topic-email-marketing-tips"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u30103\u3064\u306e\u65b9\u6cd5\u3011DMARC\u5931\u6557\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f<\/title>\n<meta name=\"description\" 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property=\"og:image:height\" content=\"730\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Salman Ravoof\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:description\" content=\"DMARC\u30a8\u30e9\u30fc\u306f\u3001\u9001\u4fe1\u30e1\u30fc\u30eb\u304cDMARC\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u3053\u306e\u30a8\u30e9\u30fc\u306e\u7c21\u5358\u306a\u89e3\u6c7a\u65b9\u6cd5\u30923\u3064\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2022\/09\/dmarc-failed.jpg\" \/>\n<meta name=\"twitter:creator\" content=\"@salmanravoof\" \/>\n<meta name=\"twitter:site\" content=\"@Kinsta_JP\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"Salman 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