{"id":29282,"date":"2026-09-28T15:13:28","date_gmt":"2026-09-28T06:13:28","guid":{"rendered":"https:\/\/motoki-design.co.jp\/wordpress\/spf-dkim-dmarc-check\/"},"modified":"2026-10-01T18:18:39","modified_gmt":"2026-10-01T09:18:39","slug":"spf-dkim-dmarc-check","status":"publish","type":"post","link":"https:\/\/motoki-design.co.jp\/wordpress\/spf-dkim-dmarc-check\/","title":{"rendered":"SPF\u30fbDKIM\u30fbDMARC\u306e\u78ba\u8a8d\u65b9\u6cd5\uff5c\u30c9\u30e1\u30a4\u30f3\u3092\u5165\u308c\u3066\u8a2d\u5b9a\u3092\u8abf\u3079\u308b\u624b\u9806\u3068\u7d50\u679c\u306e\u8aad\u307f\u65b9"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u304a\u554f\u3044\u5408\u308f\u305b\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u5c4a\u304f\u306f\u305a\u306e\u30e1\u30fc\u30eb\u304c\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u306e\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53d6\u5f15\u5148\u306b\u9001\u3063\u305f\u30e1\u30fc\u30eb\u304c\u5c4a\u3044\u3066\u3044\u306a\u304b\u3063\u305f\u3001\u3068\u3044\u3046\u76f8\u8ac7\u3082\u73cd\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u539f\u56e0\u306e1\u3064\u304c\u3001\u9001\u4fe1\u306b\u4f7f\u3046\u30c9\u30e1\u30a4\u30f3\u306e\u300c\u30e1\u30fc\u30eb\u8a8d\u8a3c\u300d\u306e\u8a2d\u5b9a\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u3092\u5165\u308c\u308b\u3060\u3051\u3067SPF\u30fbDKIM\u30fbDMARC\u306e\u8a2d\u5b9a\u3092\u8abf\u3079\u308b\u65b9\u6cd5\u3068\u3001\u30b3\u30de\u30f3\u30c9\u3067\u624b\u3067\u8abf\u3079\u308b\u65b9\u6cd5\u3001\u7d50\u679c\u306e\u8aad\u307f\u65b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u4f7f\u3046<a href=\"https:\/\/motoki-design.co.jp\/tools\/mail-auth-check\/\">\u30e1\u30fc\u30eb\u8a8d\u8a3c\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u8a3a\u65ad<\/a>\u306f\u3001\u5f53\u30b5\u30a4\u30c8\u3068\u540c\u3058MOTOKI\u5408\u540c\u4f1a\u793e\u304c\u4f5c\u3063\u305f\u300c<a href=\"https:\/\/motoki-design.co.jp\/tools\/tools-list\/\">WEB\u30c4\u30fc\u30eb\u7bb1<\/a>\u300d\u306e1\u3064\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7121\u6599\u3067\u3001\u4f1a\u54e1\u767b\u9332\u306a\u3057\u3067\u4f7f\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6700\u7d42\u78ba\u8a8d\u65e5\uff1a2026\u5e749\u670828\u65e5<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3053\u306e\u8a18\u4e8b\u3067\u5206\u304b\u308b\u3053\u3068<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SPF\u30fbDKIM\u30fbDMARC\u304c\u305d\u308c\u305e\u308c\u4f55\u3092\u78ba\u304b\u3081\u3066\u3044\u308b\u304b<\/li>\n\n\n<li>\u30c9\u30e1\u30a4\u30f3\u3092\u5165\u308c\u30663\u3064\u306e\u8a2d\u5b9a\u3092\u307e\u3068\u3081\u3066\u8abf\u3079\u308b\u624b\u9806<\/li>\n\n\n<li>\u70b9\u6570\u3068\u5224\u5b9a\u306e\u8aad\u307f\u65b9<\/li>\n\n\n<li><strong>DKIM\u304c\u300c\u78ba\u8a8d\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u300d\u3068\u51fa\u308b\u7406\u7531<\/strong><\/li>\n\n\n<li>nslookup\u3067\u624b\u3067\u8abf\u3079\u308b\u65b9\u6cd5<\/li>\n<\/ul>\n\n\n<div class=\"swell-block-postLink\">\t\t\t<div class=\"p-blogCard -external\" data-type=\"type3\" data-onclick=\"clickLink\">\n\t\t\t\t<div class=\"p-blogCard__inner\">\n\t\t\t\t\t<span class=\"p-blogCard__caption\">WEB\u30c4\u30fc\u30eb\u7bb1<\/span>\n\t\t\t\t\t<div class=\"p-blogCard__thumb c-postThumb\"><figure class=\"c-postThumb__figure\"><img decoding=\"async\" src=\"https:\/\/motoki-design.co.jp\/tools\/wp-content\/uploads\/2026\/09\/ogp.png\" alt=\"\" class=\"c-postThumb__img u-obf-cover\" width=\"320\" height=\"180\"><\/figure><\/div>\t\t\t\t\t<div class=\"p-blogCard__body\">\n\t\t\t\t\t\t<a class=\"p-blogCard__title\" href=\"https:\/\/motoki-design.co.jp\/tools\/mail-auth-check\/\" target=\"_blank\" rel=\"noopener noreferrer\">SPF\u30fbDKIM\u30fbDMARC\u8a3a\u65ad\u30c4\u30fc\u30eb\uff5c\u30e1\u30fc\u30eb\u8a8d\u8a3c\u3092\u7121\u6599\u3067\u63a1\u70b9<\/a>\n\t\t\t\t\t\t<span class=\"p-blogCard__excerpt\">\u30c9\u30e1\u30a4\u30f3\u3092\u5165\u308c\u308b\u3060\u3051\u3067\u3001SPF\u30fbDKIM\u30fbDMARC\u306e\u8a2d\u5b9a\u72b6\u6cc1\u3092100\u70b9\u6e80\u70b9\u3067\u7121\u6599\u63a1\u70b9\u3002\u30e1\u30fc\u30eb\u304c\u8ff7\u60d1\u30e1\u30fc\u30eb\u306b\u5165\u308b\u30fb\u5c4a\u304b\u306a\u3044\u539f\u56e0\u306e\u5207\u308a\u5206\u3051\u3084\u3001Gmail\u3068Yahoo!\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u8005\u30ac\u30a4\u30c9\u30e9&#8230;<\/span>\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\n<h2 class=\"wp-block-heading\">SPF\u30fbDKIM\u30fbDMARC\u306f\u4f55\u3092\u78ba\u304b\u3081\u3066\u3044\u308b\u304b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">3\u3064\u3068\u3082\u3001\u9001\u308a\u4e3b\u304c\u30c9\u30e1\u30a4\u30f3\u3092\u52dd\u624b\u306b\u540d\u4e57\u3063\u3066\u3044\u306a\u3044\u304b\u3092\u3001\u53d7\u3051\u53d6\u308b\u5074\u304c\u78ba\u304b\u3081\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SPF\u3068DMARC\u306fDNS\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3067\u516c\u958b\u3057\u307e\u3059\u3002DKIM\u306fTXT\u3067\u516c\u958b\u3059\u308b\u65b9\u5f0f\u306e\u307b\u304b\u3001\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u304c\u6307\u5b9a\u3059\u308bCNAME\u3067\u516c\u958b\u5148\u3092\u59d4\u4efb\u3059\u308b\u65b9\u5f0f\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th style=\"min-width:8em !important\">\u4ed5\u7d44\u307f<\/th><th>\u4f55\u3092\u3059\u308b\u304b<\/th><th>DNS\u306e\u3069\u3053\u306b\u66f8\u304f\u304b<\/th><\/tr><\/thead><tbody><tr><td>SPF<\/td><td>\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u30e1\u30fc\u30eb\u3092\u9001\u3063\u3066\u3088\u3044\u30b5\u30fc\u30d0\u30fc\u3092\u7533\u544a\u3059\u308b<\/td><td>\u30c9\u30e1\u30a4\u30f3\u305d\u306e\u3082\u306e\uff08\u4f8b\uff1aexample.com\uff09<\/td><\/tr><tr><td>DKIM<\/td><td>\u30e1\u30fc\u30eb\u306b\u96fb\u5b50\u7f72\u540d\u3092\u4ed8\u3051\u3001\u9014\u4e2d\u3067\u66f8\u304d\u63db\u3048\u3089\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b<\/td><td>\u30bb\u30ec\u30af\u30bf._domainkey.example.com<\/td><\/tr><tr><td>DMARC<\/td><td>SPF\u307e\u305f\u306fDKIM\u306e\u5408\u683c\u3068From\u30c9\u30e1\u30a4\u30f3\u3068\u306e\u6574\u5408\u3092\u78ba\u8a8d\u3057\u3001DMARC\u4e0d\u5408\u683c\u6642\u306e\u6271\u3044\u3092\u53d7\u4fe1\u5074\u3078\u8981\u6c42\u3059\u308b<\/td><td>_dmarc.example.com<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">SPF\u3068DKIM\u306b\u306f\u305d\u308c\u305e\u308c\u5f79\u5272\u304c\u3042\u308a\u307e\u3059\u3002DMARC\u306f\u3001SPF\u304bDKIM\u306e\u5c11\u306a\u304f\u3068\u3082\u4e00\u65b9\u304c\u5408\u683c\u3057\u3001\u305d\u306e\u8a8d\u8a3c\u30c9\u30e1\u30a4\u30f3\u304c\u8868\u793a\u4e0a\u306eFrom\u30c9\u30e1\u30a4\u30f3\u3068\u6574\u5408\u3059\u308c\u3070\u5408\u683c\u3057\u307e\u3059\u3002\u4e21\u65b9\u306e\u5408\u683c\u306f\u5fc5\u9808\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gmail\u306f\u3001Gmail\u306e\u30a2\u30c9\u30ec\u30b9\u30781\u65e5\u306b5,000\u901a\u4ee5\u4e0a\u3092\u9001\u308b\u9001\u4fe1\u8005\u306b\u30013\u3064\u3059\u3079\u3066\u306e\u8a2d\u5b9a\u3092\u6c42\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30c4\u30fc\u30eb\u3067\u8abf\u3079\u308b\uff5c\u30c9\u30e1\u30a4\u30f3\u3092\u5165\u308c\u308b\u3060\u3051<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/\/motoki-design.co.jp\/tools\/mail-auth-check\/\">\u30e1\u30fc\u30eb\u8a8d\u8a3c\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u8a3a\u65ad<\/a>\u3092\u958b\u304f<\/li>\n\n\n<li>\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e@\u3088\u308a\u5f8c\u308d\uff08\u30c9\u30e1\u30a4\u30f3\uff09\u3092\u5165\u308c\u3066\u300c\u8a3a\u65ad\u3059\u308b\u300d\u3092\u62bc\u3059<\/li>\n\n\n<li>100\u70b9\u6e80\u70b9\u306e\u70b9\u6570\u3068\u3001\u9805\u76ee\u3054\u3068\u306e\u5224\u5b9a\u304c\u51fa\u308b<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c4\u30fc\u30eb\u306f\u516c\u958b\u3055\u308c\u3066\u3044\u308bDNS\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u8aad\u3080\u3060\u3051\u3067\u3001\u30e1\u30fc\u30eb\u3092\u9001\u3063\u305f\u308a\u53d7\u3051\u53d6\u3063\u305f\u308a\u306f\u3057\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c4\u30fc\u30eb\u306e\u300c\u304a\u8a66\u3057\u300d\u306b\u8f09\u3063\u3066\u3044\u308bgoogle.com\u3092\u8abf\u3079\u305f\u7d50\u679c\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"771\" height=\"924\" src=\"https:\/\/motoki-design.co.jp\/wordpress\/wp-content\/uploads\/mail-auth-check-google.png\" alt=\"\u30e1\u30fc\u30eb\u8a8d\u8a3c\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u8a3a\u65ad\u3067google.com\u3092\u8abf\u3079\u305f\u7d50\u679c\" class=\"wp-image-29281\" srcset=\"https:\/\/motoki-design.co.jp\/wordpress\/wp-content\/uploads\/mail-auth-check-google.png 771w, https:\/\/motoki-design.co.jp\/wordpress\/wp-content\/uploads\/mail-auth-check-google-382x458.png 382w, https:\/\/motoki-design.co.jp\/wordpress\/wp-content\/uploads\/mail-auth-check-google-768x920.png 768w\" sizes=\"(max-width: 771px) 100vw, 771px\" \/><figcaption class=\"wp-element-caption\">google.com\u3092\u8abf\u3079\u305f\u7d50\u679c\u300294\u70b9\u3067A\uff082026\/09\/28\u6642\u70b9\u306e\u8868\u793a\uff09<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u70b9\u6570\u306f94\u70b9\u3067\u3001\u5224\u5b9a\u306fA\u3067\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SPF\u306e\u300c~all\u300d\u306f\u672a\u8a31\u53ef\u306e\u9001\u4fe1\u5143\u3092softfail\u3068\u3059\u308b\u6307\u5b9a\u3067\u3059\u3002DMARC\u306e\u300cp=reject\u300d\u306fDMARC\u4e0d\u5408\u683c\u30e1\u30fc\u30eb\u306e\u62d2\u5426\u3092\u8981\u6c42\u3057\u307e\u3059\u304c\u3001\u6700\u7d42\u7684\u306a\u6271\u3044\u306f\u53d7\u4fe1\u5074\u306e\u65b9\u91dd\u306b\u3082\u4f9d\u5b58\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DMARC\u306e\u5831\u544a\u306e\u53d7\u3051\u53d6\u308a\u5148\uff08rua\uff09\u3082\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u65b9\u3001DKIM\u306f\u300c\u78ba\u8a8d\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u300d\u3068\u51fa\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u3058\u7d50\u679c\u306f<a href=\"https:\/\/motoki-design.co.jp\/tools\/mail-auth-check\/#google.com\">google.com\u306e\u8a3a\u65ad\u3092\u3044\u307e\u958b\u304f<\/a>\u3068\u78ba\u304b\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3\u3064\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u6bd4\u3079\u308b\uff5c\u70b9\u6570\u306e\u5dee\u306fDMARC\u3067\u6c7a\u307e\u308b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c4\u30fc\u30eb\u306e\u300c\u304a\u8a66\u3057\u300d\u306b\u8f09\u3063\u3066\u3044\u308b3\u3064\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u30012026\u5e749\u670828\u65e5\u306b\u8abf\u3079\u305f\u7d50\u679c\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th style=\"min-width:8em !important\">\u30c9\u30e1\u30a4\u30f3<\/th><th>\u70b9\u6570<\/th><th>SPF\u306e\u672b\u5c3e<\/th><th>SPF\u306e\u53c2\u7167\u56de\u6570<\/th><th>DMARC<\/th><th>DKIM<\/th><\/tr><\/thead><tbody><tr><td>google.com<\/td><td>94\u70b9\uff08A\uff09<\/td><td>~all<\/td><td>1\u56de<\/td><td>p=reject<\/td><td>\u78ba\u8a8d\u3067\u304d\u305a<\/td><\/tr><tr><td>rakuten.co.jp<\/td><td>94\u70b9\uff08A\uff09<\/td><td>~all<\/td><td>2\u56de<\/td><td>p=reject<\/td><td>\u78ba\u8a8d\u3067\u304d\u305a<\/td><\/tr><tr><td>nttdocomo.co.jp<\/td><td>74\u70b9\uff08C\uff09<\/td><td>~all<\/td><td>0\u56de<\/td><td>p=none<\/td><td>\u78ba\u8a8d\u3067\u304d\u305a<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">3\u3064\u3068\u3082SPF\u306f\u540c\u3058\u300c~all\u300d\u306a\u306e\u3067\u3001\u5dee\u304c\u3064\u3044\u305f\u306e\u306fDMARC\u306e\u8a2d\u5b9a\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cp=none\u300d\u306fDMARC\u4e0d\u5408\u683c\u3092\u7406\u7531\u3068\u3059\u308b\u9694\u96e2\u30fb\u62d2\u5426\u3092\u8981\u6c42\u3057\u306a\u3044\u8a2d\u5b9a\u3067\u3059\u3002\u914d\u9054\u3092\u4fdd\u8a3c\u3059\u308b\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u53d7\u4fe1\u5074\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u306a\u3069\u306f\u5225\u306b\u9069\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5831\u544a\u3092\u96c6\u3081\u3066\u3044\u308b\u6bb5\u968e\u306e\u30c9\u30e1\u30a4\u30f3\u3067\u306f\u3001\u3088\u304f\u898b\u3089\u308c\u308b\u8a2d\u5b9a\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u70b9\u6570\u306f\u3001SPF\u304c\u6700\u592740\u70b9\u3001DMARC\u304c\u6700\u592750\u70b9\u306e\u5408\u8a0890\u70b9\u3092\u3001100\u70b9\u306b\u63db\u7b97\u3057\u3066\u51fa\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DKIM\u306f\u5916\u304b\u3089\u78ba\u304b\u3081\u304d\u308c\u306a\u3044\u305f\u3081\u3001\u70b9\u6570\u306b\u306f\u5165\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th style=\"min-width:8em !important\">\u5224\u5b9a<\/th><th>\u70b9\u6570<\/th><th>\u610f\u5473<\/th><\/tr><\/thead><tbody><tr><td>A<\/td><td>90\u70b9\u4ee5\u4e0a<\/td><td>\u5341\u5206\u306b\u5bfe\u7b56\u3067\u304d\u3066\u3044\u308b<\/td><\/tr><tr><td>B<\/td><td>75\u301c89\u70b9<\/td><td>\u57fa\u672c\u7684\u306a\u5bfe\u7b56\u306f\u3067\u304d\u3066\u3044\u308b<\/td><\/tr><tr><td>C<\/td><td>55\u301c74\u70b9<\/td><td>\u6700\u4f4e\u9650\u306e\u8a2d\u5b9a\u306f\u3042\u308b\u304c\u4e0d\u5341\u5206<\/td><\/tr><tr><td>D<\/td><td>30\u301c54\u70b9<\/td><td>\u5bfe\u7b56\u304c\u4e0d\u8db3\u3057\u3066\u3044\u308b<\/td><\/tr><tr><td>E<\/td><td>30\u70b9\u672a\u6e80<\/td><td>\u306a\u308a\u3059\u307e\u3057\u306b\u5bfe\u3057\u3066\u7121\u9632\u5099<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">DKIM\u304c\u300c\u78ba\u8a8d\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u300d\u3068\u51fa\u308b\u7406\u7531<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DKIM\u306e\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u300c\u30bb\u30ec\u30af\u30bf\u300d\u3068\u547c\u3070\u308c\u308b\u540d\u524d\u306e\u4e0b\u306b\u7f6e\u304b\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30bb\u30ec\u30af\u30bf\u306e\u540d\u524d\u306f\u9001\u308b\u5074\u304c\u81ea\u7531\u306b\u6c7a\u3081\u308b\u305f\u3081\u3001\u5916\u304b\u3089\u306f\u5206\u304b\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c4\u30fc\u30eb\u306f\u3001default\u30fbgoogle\u30fbselector1\u30fbsendgrid\u306a\u3069\u3001\u3088\u304f\u4f7f\u308f\u308c\u308b\u540d\u524d\u3092\u9806\u756a\u306b\u8a66\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u308c\u4ee5\u5916\u306e\u540d\u524d\u3092\u4f7f\u3063\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u3067\u306f\u898b\u3064\u304b\u3089\u305a\u3001\u300c\u78ba\u8a8d\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u300d\u3068\u51fa\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eca\u56de\u306e3\u3064\u306e\u30c9\u30e1\u30a4\u30f3\u306f\u3001\u3069\u308c\u3082DKIM\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u300c\u78ba\u8a8d\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u300d\u306f\u300c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u300d\u3068\u3044\u3046\u610f\u5473\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u78ba\u304b\u3081\u308b\u306b\u306f\u3001\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u5c4a\u3044\u305f\u30e1\u30fc\u30eb\u306e\u30d8\u30c3\u30c0\u30fc\u3092\u898b\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DKIM-Signature\u306es=\u304c\u30bb\u30ec\u30af\u30bf\u3001d=\u304c\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u3067\u3059\u3002DNS\u3067\u306f\u300c\u30bb\u30ec\u30af\u30bf._domainkey.\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u300d\u3092\u8abf\u3079\u307e\u3059\u3002\u4fe1\u983c\u3059\u308b\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u306eAuthentication-Results\u3067dkim=pass\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d8\u30c3\u30c0\u30fc\u306e\u8aad\u307f\u65b9\u306f<a href=\"https:\/\/motoki-design.co.jp\/tools\/mail-header\/\">\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u30fc\u89e3\u6790<\/a>\u3067\u78ba\u304b\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8aad\u307f\u65b9\u306e\u624b\u9806\u306f\u300c<a href=\"https:\/\/motoki-design.co.jp\/wordpress\/email-header-analysis\/\">\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u30fc\u306e\u898b\u65b9<\/a>\u300d\u3067\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30c4\u30fc\u30eb\u3092\u4f7f\u308f\u305a\u306b\u8abf\u3079\u308b\uff5cnslookup\u3067\u5f15\u304f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Windows\u306a\u3089\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3084PowerShell\u3001Mac\u306a\u3089\u30bf\u30fc\u30df\u30ca\u30eb\u3067\u3001nslookup\u3068\u3044\u3046\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">example.com\u306e\u90e8\u5206\u3092\u3001\u8abf\u3079\u305f\u3044\u30c9\u30e1\u30a4\u30f3\u306b\u7f6e\u304d\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SPF\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u305d\u306e\u3082\u306e\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3092\u5f15\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>nslookup -type=txt example.com<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u51fa\u3066\u304d\u305f\u4e2d\u304b\u3089\u300cv=spf1\u300d\u3067\u59cb\u307e\u308b\u884c\u3092\u63a2\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">google.com\u3067\u306f\u300cv=spf1 include:_spf.google.com ~all\u300d\u306e1\u884c\u3067\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TXT\u30ec\u30b3\u30fc\u30c9\u306b\u306f\u307b\u304b\u306e\u7528\u9014\u306e\u5024\u3082\u4e26\u3076\u306e\u3067\u3001SPF\u306e\u884c\u3060\u3051\u3092\u898b\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DMARC\u306f\u3001\u982d\u306b\u300c_dmarc.\u300d\u3092\u4ed8\u3051\u305f\u540d\u524d\u3067\u5f15\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>nslookup -type=txt _dmarc.example.com<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cv=DMARC1\u300d\u3067\u59cb\u307e\u308b\u30ec\u30b3\u30fc\u30c9\u304c\u51fa\u305f\u3089\u3001p\u30bf\u30b0\u306a\u3069\u306e\u69cb\u6587\u3068\u91cd\u8907\u306e\u6709\u7121\u3082\u78ba\u8a8d\u3057\u307e\u3059\u3002\u5b58\u5728\u3059\u308b\u3060\u3051\u3067\u306f\u6709\u52b9\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7d50\u679c\u304c\u7a7a\u3067\u3082\u672a\u8a2d\u5b9a\u3068\u5373\u65ad\u305b\u305a\u3001\u554f\u3044\u5408\u308f\u305b\u30a8\u30e9\u30fc\u3084\u53c2\u7167\u5148DNS\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3067\u306f\u4e0a\u4f4d\u30c9\u30e1\u30a4\u30f3\u306e\u30dd\u30ea\u30b7\u30fc\u304c\u9069\u7528\u3055\u308c\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DKIM\u306f\u3001\u30bb\u30ec\u30af\u30bf\u304c\u5206\u304b\u3063\u3066\u3044\u308b\u5834\u5408\u3060\u3051\u5f15\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>nslookup -type=txt s1._domainkey.example.com<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">s1\u306e\u90e8\u5206\u306b\u3001\u30e1\u30fc\u30eb\u306e\u30d8\u30c3\u30c0\u30fc\u3067\u8abf\u3079\u305f\u30bb\u30ec\u30af\u30bf\u3092\u5165\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cv=DKIM1\u300d\u3084\u300cp=\u300d\u3067\u59cb\u307e\u308b\u5024\u304c\u51fa\u308c\u3070\u3001\u516c\u958b\u9375\u304c\u7f6e\u304b\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7d50\u679c\u3092\u898b\u3066\u76f4\u3059\u3068\u3053\u308d<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th style=\"min-width:8em !important\">\u51fa\u305f\u7d50\u679c<\/th><th>\u76f4\u3057\u65b9<\/th><\/tr><\/thead><tbody><tr><td>SPF\u30ec\u30b3\u30fc\u30c9\u304c\u3042\u308a\u307e\u305b\u3093<\/td><td>\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u3084\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u304c\u6848\u5185\u3057\u3066\u3044\u308b\u5024\u3092\u3001DNS\u306bTXT\u30ec\u30b3\u30fc\u30c9\u3067\u8ffd\u52a0\u3059\u308b<\/td><\/tr><tr><td>SPF\u30ec\u30b3\u30fc\u30c9\u304c\u8907\u6570\u3042\u308a\u307e\u3059<\/td><td>\u540c\u3058\u540d\u524d\u306b\u516c\u958b\u3059\u308bSPF\u30ec\u30b3\u30fc\u30c9\u306f1\u3064\u306b\u3059\u308b\u3002\u8907\u6570\u306e\u9001\u4fe1\u5143\u3092\u7d71\u5408\u3057\u3001DNS\u53c2\u7167\u56de\u6570\u306e\u4e0a\u9650\u3082\u78ba\u8a8d\u3059\u308b<\/td><\/tr><tr><td>DNS\u53c2\u7167\u56de\u6570\u304c\u4e0a\u9650\u3092\u8d85\u3048\u3066\u3044\u307e\u3059<\/td><td>include\u306a\u3069\u3067\u305f\u3069\u308b\u53c2\u7167\u306f10\u56de\u307e\u3067\u306a\u306e\u3067\u3001\u4f7f\u3063\u3066\u3044\u306a\u3044\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u306einclude\u3092\u6d88\u3059<\/td><\/tr><tr><td>?all\u30fb+all\u306b\u306a\u3063\u3066\u3044\u308b<\/td><td>\u672b\u5c3e\u3092 ~all \u304b -all \u306b\u3059\u308b<\/td><\/tr><tr><td>DMARC\u30ec\u30b3\u30fc\u30c9\u304c\u3042\u308a\u307e\u305b\u3093<\/td><td>\u307e\u305a\u306f p=none \u3067\u5831\u544a\u3092\u96c6\u3081\u308b\u8a2d\u5b9a\u304b\u3089\u59cb\u3081\u308b<\/td><\/tr><tr><td>DMARC\u304c p=none<\/td><td>\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u304c\u3059\u3079\u3066\u691c\u67fb\u3092\u901a\u3063\u3066\u3044\u308b\u3068\u78ba\u304b\u3081\u3066\u304b\u3089\u3001p=quarantine\u3001p=reject \u3068\u6bb5\u968e\u7684\u306b\u5f37\u3081\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u521d\u304b\u3089 p=reject \u306b\u3059\u308b\u3068\u3001\u793e\u5185\u306e\u30b7\u30b9\u30c6\u30e0\u3084\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u304b\u3089\u9001\u3063\u3066\u3044\u308b\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u307e\u3067\u62d2\u5426\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5831\u544a\u30921\u301c2\u304b\u6708\u96c6\u3081\u3066\u3001\u9001\u308a\u5143\u3092\u6d17\u3044\u51fa\u3057\u3066\u304b\u3089\u5f37\u3081\u308b\u306e\u304c\u5b89\u5168\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e1\u30fc\u30eb\u3092\u9001\u3089\u306a\u3044\u30c9\u30e1\u30a4\u30f3\u3067\u3082\u3001\u7b2c\u4e09\u8005\u304c\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u540d\u4e57\u3063\u3066\u9001\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9001\u4fe1\u306b\u4f7f\u308f\u306a\u3044\u30c9\u30e1\u30a4\u30f3\u306b\u306f\u3001SPF\u306b\u300cv=spf1 -all\u300d\u3001DMARC\u306b\u300cp=reject\u300d\u3092\u8a2d\u5b9a\u3057\u3066\u304a\u304f\u3068\u3001\u306a\u308a\u3059\u307e\u3057\u3092\u62d2\u5426\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">WordPress\u306e\u304a\u554f\u3044\u5408\u308f\u305b\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u5834\u5408\u306e\u8a2d\u5b9a\u306f\u3001\u300c<a href=\"https:\/\/motoki-design.co.jp\/wordpress\/wordpress-gmail-smtp-spf-dkim-dmarc-mail-settings\/\">\u304a\u554f\u3044\u5408\u308f\u305b\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u30fb\u8ff7\u60d1\u30e1\u30fc\u30eb\u306b\u5c4a\u304f\u5834\u5408\u306e\u8a2d\u5b9a\u65b9\u6cd5<\/a>\u300d\u3067\u624b\u9806\u3092\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30c4\u30fc\u30eb\u306e\u9650\u754c<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DKIM\u306f\u3001\u3088\u304f\u4f7f\u308f\u308c\u308b\u30bb\u30ec\u30af\u30bf\u306e\u540d\u524d\u3067\u3057\u304b\u63a2\u305b\u306a\u3044<\/li>\n\n\n<li>DNS\u306e\u8a2d\u5b9a\u3092\u898b\u308b\u3060\u3051\u306a\u306e\u3067\u3001\u5b9f\u969b\u306b\u5c4a\u3044\u305f\u30e1\u30fc\u30eb\u306e\u7d50\u679c\u306f\u5206\u304b\u3089\u306a\u3044<\/li>\n\n\n<li>DNS\u3092\u66f8\u304d\u63db\u3048\u305f\u76f4\u5f8c\u306f\u3001\u53e4\u3044\u5024\u304c\u8fd4\u3063\u3066\u304f\u308b\u3053\u3068\u304c\u3042\u308b<\/li>\n\n\n<li>\u7d50\u679c\u304c\u4e00\u6642\u7684\u306b\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b\u3068\u304d\u306f\u3001\u8abf\u67fb\u65e5\u6642\u306e\u6a2a\u306b\u300c\uff08\u30ad\u30e3\u30c3\u30b7\u30e5\uff09\u300d\u3068\u51fa\u308b<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u969b\u306b\u5c4a\u3044\u305f\u30e1\u30fc\u30eb\u3067\u4f55\u304c\u8d77\u304d\u305f\u304b\u306f\u3001\u30e1\u30fc\u30eb\u306e\u30d8\u30c3\u30c0\u30fc\u3067\u78ba\u304b\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DNS\u306e\u8a2d\u5b9a\u3068\u30d8\u30c3\u30c0\u30fc\u306e\u4e21\u65b9\u3092\u898b\u6bd4\u3079\u308b\u3068\u3001\u539f\u56e0\u3092\u7d5e\u308a\u8fbc\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Q. DMARC\u306f p=none \u306e\u307e\u307e\u3067\u306f\u3044\u3051\u307e\u305b\u3093\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">p=none \u306fDMARC\u306b\u3088\u308b\u9694\u96e2\u30fb\u62d2\u5426\u3092\u8981\u6c42\u3057\u307e\u305b\u3093\u3002\u307b\u304b\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u306b\u3088\u308b\u62d2\u5426\u307e\u3067\u7121\u52b9\u306b\u3059\u308b\u8a2d\u5b9a\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3060\u3057\u3001\u5831\u544a\u3092\u96c6\u3081\u308b\u6700\u521d\u306e\u6bb5\u968e\u3068\u3057\u3066\u306f\u6b63\u3057\u3044\u8a2d\u5b9a\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b63\u898f\u306e\u9001\u308a\u5143\u304c\u3059\u3079\u3066\u691c\u67fb\u3092\u901a\u308b\u3068\u5206\u304b\u3063\u305f\u3089\u3001quarantine\u3001reject \u3078\u9032\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u8abf\u3079\u305f\u30c9\u30e1\u30a4\u30f3\u306f\u8a18\u9332\u3055\u308c\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c4\u30fc\u30eb\u306e\u30da\u30fc\u30b8\u306b\u306f\u3001\u8abf\u3079\u305f\u30c9\u30e1\u30a4\u30f3\u306f\u4fdd\u5b58\u3082\u516c\u958b\u3082\u3057\u306a\u3044\u3068\u66f8\u304b\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f1a\u54e1\u767b\u9332\u3084\u30ed\u30b0\u30a4\u30f3\u3082\u8981\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304c\u5225\u306e\u4f1a\u793e\u3067\u3082\u8abf\u3079\u3089\u308c\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8abf\u3079\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u898b\u3066\u3044\u308b\u306e\u306f\u30c9\u30e1\u30a4\u30f3\u306eDNS\u306a\u306e\u3067\u3001\u30e1\u30fc\u30eb\u3092\u3069\u306e\u4f1a\u793e\u306e\u30b5\u30fc\u30d0\u30fc\u3067\u9001\u3063\u3066\u3044\u3066\u3082\u7d50\u679c\u306f\u540c\u3058\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MX\u30ec\u30b3\u30fc\u30c9\uff08\u30e1\u30fc\u30eb\u3092\u53d7\u3051\u53d6\u308b\u30b5\u30fc\u30d0\u30fc\uff09\u3082\u4e00\u7dd2\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SPF\u30fbDKIM\u30fbDMARC\u306f\u3001\u3069\u308c\u3082DNS\u306eTXT\u30ec\u30b3\u30fc\u30c9\u306b\u66f8\u304f<\/li>\n\n\n<li><a href=\"https:\/\/motoki-design.co.jp\/tools\/mail-auth-check\/\">\u30e1\u30fc\u30eb\u8a8d\u8a3c\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u8a3a\u65ad<\/a>\u3067\u306f\u30c9\u30e1\u30a4\u30f3\u3092\u5165\u308c\u308b\u3060\u3051\u30673\u3064\u3092\u307e\u3068\u3081\u3066\u8abf\u3079\u3089\u308c\u308b<\/li>\n\n\n<li>\u70b9\u6570\u306e\u5dee\u306fDMARC\u306e\u8a2d\u5b9a\u3067\u3064\u304d\u3084\u3059\u3044\uff08p=none\u306f74\u70b9\u3001p=reject\u306f94\u70b9\u3060\u3063\u305f\uff09<\/li>\n\n\n<li><strong>DKIM\u306e\u300c\u78ba\u8a8d\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u300d\u306f\u672a\u8a2d\u5b9a\u3068\u3044\u3046\u610f\u5473\u3067\u306f\u306a\u3044<\/strong><\/li>\n\n\n<li>DKIM\u306e\u30bb\u30ec\u30af\u30bf\u306f\u3001\u5c4a\u3044\u305f\u30e1\u30fc\u30eb\u306e\u30d8\u30c3\u30c0\u30fc\u306e\u300cs=\u300d\u3067\u5206\u304b\u308b<\/li>\n<\/ul>\n\n\n<div class=\"swell-block-postLink\">\t\t\t<div class=\"p-blogCard -external\" data-type=\"type3\" data-onclick=\"clickLink\">\n\t\t\t\t<div class=\"p-blogCard__inner\">\n\t\t\t\t\t<span class=\"p-blogCard__caption\">WEB\u30c4\u30fc\u30eb\u7bb1<\/span>\n\t\t\t\t\t<div class=\"p-blogCard__thumb c-postThumb\"><figure class=\"c-postThumb__figure\"><img decoding=\"async\" src=\"https:\/\/motoki-design.co.jp\/tools\/wp-content\/uploads\/2026\/09\/ogp.png\" alt=\"\" class=\"c-postThumb__img u-obf-cover\" width=\"320\" height=\"180\"><\/figure><\/div>\t\t\t\t\t<div class=\"p-blogCard__body\">\n\t\t\t\t\t\t<a class=\"p-blogCard__title\" href=\"https:\/\/motoki-design.co.jp\/tools\/mail-auth-check\/\" target=\"_blank\" rel=\"noopener noreferrer\">SPF\u30fbDKIM\u30fbDMARC\u8a3a\u65ad\u30c4\u30fc\u30eb\uff5c\u30e1\u30fc\u30eb\u8a8d\u8a3c\u3092\u7121\u6599\u3067\u63a1\u70b9<\/a>\n\t\t\t\t\t\t<span class=\"p-blogCard__excerpt\">\u30c9\u30e1\u30a4\u30f3\u3092\u5165\u308c\u308b\u3060\u3051\u3067\u3001SPF\u30fbDKIM\u30fbDMARC\u306e\u8a2d\u5b9a\u72b6\u6cc1\u3092100\u70b9\u6e80\u70b9\u3067\u7121\u6599\u63a1\u70b9\u3002\u30e1\u30fc\u30eb\u304c\u8ff7\u60d1\u30e1\u30fc\u30eb\u306b\u5165\u308b\u30fb\u5c4a\u304b\u306a\u3044\u539f\u56e0\u306e\u5207\u308a\u5206\u3051\u3084\u3001Gmail\u3068Yahoo!\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u8005\u30ac\u30a4\u30c9\u30e9&#8230;<\/span>\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\n<p class=\"wp-block-paragraph\">\u307b\u304b\u306e\u9805\u76ee\u3082\u307e\u3068\u3081\u3066\u70b9\u691c\u3059\u308b\u306a\u3089\u3001\u300c<a href=\"https:\/\/motoki-design.co.jp\/wordpress\/wordpress-site-checkup\/\">WordPress\u30b5\u30a4\u30c8\u3092\u81ea\u5206\u3067\u70b9\u691c\u3059\u308b\u624b\u9806<\/a>\u300d\u3067\u9806\u756a\u3068\u4f7f\u3044\u5206\u3051\u3092\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c4\u30fc\u30eb\u306e\u4e00\u89a7\u306f<a href=\"https:\/\/motoki-design.co.jp\/tools\/tools-list\/\">WEB\u30c4\u30fc\u30eb\u7bb1<\/a>\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u304a\u554f\u3044\u5408\u308f\u305b\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u5c4a\u304f\u306f\u305a\u306e\u30e1\u30fc\u30eb\u304c\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u306e\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u53d6\u5f15\u5148\u306b\u9001\u3063\u305f\u30e1\u30fc\u30eb\u304c\u5c4a\u3044\u3066\u3044\u306a\u304b\u3063\u305f\u3001\u3068\u3044\u3046\u76f8\u8ac7\u3082\u73cd\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002 \u539f\u56e0\u306e1\u3064\u304c\u3001\u9001\u4fe1\u306b\u4f7f\u3046\u30c9\u30e1\u30a4\u30f3\u306e\u300c\u30e1\u30fc\u30eb\u8a8d\u8a3c\u300d\u306e\u8a2d [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":29283,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","book_review_data":"","footnotes":"","ssp_meta_title":"SPF\u30fbDKIM\u30fbDMARC\u306e\u78ba\u8a8d\u65b9\u6cd5\u3068\u7d50\u679c\u306e\u8aad\u307f\u65b9","ssp_meta_description":"\u9001\u3063\u305f\u30e1\u30fc\u30eb\u304c\u8ff7\u60d1\u30e1\u30fc\u30eb\u306b\u5165\u308b\u3068\u304d\u306b\u898b\u76f4\u3059\u3001SPF\u30fbDKIM\u30fbDMARC\u306e\u78ba\u8a8d\u65b9\u6cd5\u3067\u3059\u3002\u30c9\u30e1\u30a4\u30f3\u3092\u5165\u308c\u3066\u63a1\u70b9\u3059\u308b\u624b\u9806\u3001nslookup\u3067\u624b\u3067\u8abf\u3079\u308b\u65b9\u6cd5\u3001DKIM\u304c\u898b\u3064\u304b\u3089\u306a\u3044\u7406\u7531\u3068\u76f4\u3057\u65b9\u3092\u307e\u3068\u3081\u307e\u3057\u305f\u3002"},"categories":[83],"tags":[],"area":[],"class_list":["post-29282","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tools"],"_links":{"self":[{"href":"https:\/\/motoki-design.co.jp\/wordpress\/wp-json\/wp\/v2\/posts\/29282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/motoki-design.co.jp\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/motoki-design.co.jp\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/motoki-design.co.jp\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/motoki-design.co.jp\/wordpress\/wp-json\/wp\/v2\/comments?post=29282"}],"version-history":[{"count":5,"href":"https:\/\/motoki-design.co.jp\/wordpress\/wp-json\/wp\/v2\/posts\/29282\/revisions"}],"predecessor-version":[{"id":29967,"href":"https:\/\/motoki-design.co.jp\/wordpress\/wp-json\/wp\/v2\/posts\/29282\/revisions\/29967"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/motoki-design.co.jp\/wordpress\/wp-json\/wp\/v2\/media\/29283"}],"wp:attachment":[{"href":"https:\/\/motoki-design.co.jp\/wordpress\/wp-json\/wp\/v2\/media?parent=29282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/motoki-design.co.jp\/wordpress\/wp-json\/wp\/v2\/categories?post=29282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/motoki-design.co.jp\/wordpress\/wp-json\/wp\/v2\/tags?post=29282"},{"taxonomy":"area","embeddable":true,"href":"https:\/\/motoki-design.co.jp\/wordpress\/wp-json\/wp\/v2\/area?post=29282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}