{"id":12205,"date":"2026-11-11T12:13:34","date_gmt":"2026-11-11T03:13:34","guid":{"rendered":"https:\/\/ci.clara.jp\/media\/?p=12205"},"modified":"2026-11-11T12:13:35","modified_gmt":"2026-11-11T03:13:35","slug":"spf%e3%83%bbdkim%e3%83%bbdmarc%e3%81%a8%e3%81%af%ef%bc%9f%e3%83%a1%e3%83%bc%e3%83%ab%e3%81%ae%e9%80%81%e4%bf%a1%e8%80%85%e8%aa%8d%e8%a8%bc%e3%82%92%e3%81%be%e3%81%a8%e3%82%81%e3%81%9f","status":"publish","type":"post","link":"https:\/\/ci.clara.jp\/media\/?p=12205","title":{"rendered":"SPF\u30fbDKIM\u30fbDMARC\u3068\u306f\uff1f\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u8005\u8a8d\u8a3c\u3092\u307e\u3068\u3081\u3066\u307f\u305f"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u3053\u3093\u306b\u3061\u306f\uff01\u30af\u30e9\u30e9\u30c6\u30af\u30cb\u30ab\u30eb\u30b5\u30dd\u30fc\u30c8\u3067\u3059\uff01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SPF\u30fbDKIM\u30fbDMARC\u306e\u8aac\u660e\u3092\u8aad\u3093\u3067\u307f\u305f\u3082\u306e\u306e\u3001 \u6b63\u76f4\u300c\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u300d\u3068\u3044\u3046\u304f\u304f\u308a\u3067\u5168\u90e8\u540c\u3058\u306b\u8003\u3048\u3066\u3057\u307e\u3063\u3066\u3044\u307e\u305b\u3093\u304b\uff1f<br>\u4eca\u56de\u306f\u3001\u3053\u306e3\u3064\u306e\u5f79\u5272\u306e\u9055\u3044\u3092\u3001\u90f5\u4fbf\u7269\u306b\u305f\u3068\u3048\u306a\u304c\u3089\u6574\u7406\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u3053\u3093\u306a\u65b9\u306b\u304a\u3059\u3059\u3081<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SPF\u30fbDKIM\u30fbDMARC\u306e3\u3064\u306e\u9055\u3044\u304c\u3044\u307e\u3044\u3061\u63b4\u3081\u3066\u3044\u306a\u3044\u65b9<\/li>\n\n\n\n<li>\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u5bfe\u7b56\u306e\u5168\u4f53\u50cf\u3092\u3056\u3063\u304f\u308a\u628a\u63e1\u3057\u305f\u3044\u65b9<\/li>\n\n\n\n<li>\u9001\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u304c\u8ff7\u60d1\u30e1\u30fc\u30eb\u6271\u3044\u3055\u308c\u308b\u3001\u305d\u306e\u539f\u56e0\u3092\u77e5\u308a\u305f\u3044\u65b9<\/li>\n<\/ul>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-border -border01 wp-block-paragraph\"><strong>\u9001\u4fe1\u8005\u8a8d\u8a3c\u30fb\u30e1\u30fc\u30eb\u904b\u7528\u306b\u95a2\u3059\u308b\u3054\u76f8\u8ac7<\/strong><br>\u300cSPF\/DKIM\/DMARC\u306e\u6b63\u3057\u3044\u8a2d\u5b9a\u65b9\u6cd5\u304c\u5206\u304b\u3089\u306a\u3044\u300d\u300c\u53d6\u5f15\u5148\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u305a\u56f0\u3063\u3066\u3044\u308b\u300d\u3068\u3044\u3063\u305f\u304a\u60a9\u307f\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f<br>&#x1f449;<a href=\"https:\/\/ci.clara.jp\/contact\/form-blog.php\">\u7121\u6599\u306e\u3054\u76f8\u8ac7\u306f\u3053\u3061\u3089\u304b\u3089<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3068\u306f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u3082\u305d\u3082\u3001\u30e1\u30fc\u30eb\u306e\u300c\u5dee\u51fa\u4eba\u300d\u6b04\u306f\u81ea\u5df1\u7533\u544a\u3067\u3057\u304b\u3042\u308a\u307e\u305b\u3093\u3002<br>\u5c01\u7b52\u306e\u5dee\u51fa\u4eba\u6b04\u3092\u81ea\u5206\u3067\u81ea\u7531\u306b\u66f8\u3051\u3066\u3057\u307e\u3046\u306e\u3068\u540c\u3058\u3067\u3001 \u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u8005\u60c5\u5831\u3082\u3001\u53d7\u4fe1\u5074\u304c\u4f55\u3082\u3057\u306a\u3051\u308c\u3070\u7c21\u5358\u306b\u306a\u308a\u3059\u307e\u305b\u3066\u3057\u307e\u3044\u307e\u3059\u3002<br>SPF\u30fbDKIM\u30fbDMARC\u306f\u3001\u3053\u306e\u300c\u672c\u5f53\u306b\u305d\u306e\u5dee\u51fa\u4eba\u304b\u3089\u9001\u3089\u308c\u305f\u306e\u304b\u300d\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306e \u4ed5\u7d44\u307f\u3067\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u5bfe\u7b56\u306e\u4e00\u90e8\u306b\u3042\u305f\u308a\u307e\u3059\u3002<br>\u305f\u3060\u3001\u305d\u308c\u305e\u308c\u62c5\u5f53\u3057\u3066\u3044\u308b\u5f79\u5272\u304c \u9055\u3046\u306e\u3067\u3001\u307e\u305a\u306f\u90f5\u4fbf\u7269\u306b\u4f8b\u3048\u3066\u5168\u4f53\u50cf\u3092\u3064\u304b\u3093\u3067\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SPF<\/strong>&nbsp;\uff1d\u300c\u3053\u306e\u4f4f\u6240\u304b\u3089\u51fa\u3059\u90f5\u4fbf\u7269\u306f\u3001\u3053\u306e\u30dd\u30b9\u30c8\u304b\u3089\u3057\u304b\u51fa\u3057\u307e\u305b\u3093\u300d\u3068\u3044\u3046\u5ba3\u8a00<\/li>\n\n\n\n<li><strong>DKIM<\/strong>&nbsp;\uff1d \u5c01\u7b52\u306b\u62bc\u3059\u300c\u672c\u4eba\u78ba\u8a8d\u6e08\u307f\u300d\u306e\u5370\u9451\uff08\u4e2d\u8eab\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u306e\u8a3c\u660e\uff09<\/li>\n\n\n\n<li><strong>DMARC<\/strong>&nbsp;\uff1d\u300c\u5ba3\u8a00\u3084\u5370\u9451\u304c\u306a\u304b\u3063\u305f\uff08\uff1d\u304a\u304b\u3057\u3044\uff09\u90f5\u4fbf\u7269\u3092\u3069\u3046\u6271\u3046\u304b\u300d\u3068\u3044\u3046\u3001\u53d7\u3051\u53d6\u308a\u5074\u306e\u30eb\u30fc\u30eb<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3046\u4e26\u3079\u308b\u3068\u3001SPF\u3068DKIM\u304c<strong>\u300c\u9001\u4fe1\u5143\u306e\u6b63\u3057\u3055\u3092\u305d\u308c\u305e\u308c\u5225\u306e\u65b9\u6cd5\u3067\u8a3c\u660e\u3059\u308b\u4ed5\u7d44\u307f\u300d<\/strong>\u3067\u3001 DMARC\u304c<strong>\u300c\u305d\u306e\u8a3c\u660e\u306b\u5931\u6557\u3057\u305f\u3068\u304d\u3069\u3046\u3059\u308b\u304b\u3092\u6c7a\u3081\u308b\u4ed5\u7d44\u307f\u300d<\/strong>\u3001\u3068\u3044\u3046\u5f79\u5272\u5206\u62c5\u304c\u898b\u3048\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"878\" height=\"379\" src=\"https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/1f409aa215e8581fb2c799168c31b8f1.png\" alt=\"\" class=\"wp-image-12210\" srcset=\"https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/1f409aa215e8581fb2c799168c31b8f1.png 878w, https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/1f409aa215e8581fb2c799168c31b8f1-300x129.png 300w, https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/1f409aa215e8581fb2c799168c31b8f1-768x332.png 768w\" sizes=\"(max-width: 878px) 100vw, 878px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">SPF\u3068\u306f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SPF\uff08Sender Policy Framework\uff09\u306f\u3001\u5148\u307b\u3069\u306e\u300c\u3053\u306e\u30dd\u30b9\u30c8\u304b\u3089\u3057\u304b\u51fa\u3057\u307e\u305b\u3093\u300d\u3068\u3044\u3046\u5ba3\u8a00\u3092\u3001 DNS\u306b\u767b\u9332\u3057\u3066\u304a\u304f\u4ed5\u7d44\u307f\u3067\u3059\u3002<br>\u30c9\u30e1\u30a4\u30f3\u306e\u7ba1\u7406\u8005\u306f\u3001\u81ea\u5206\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3067\u304d\u308b \u30b5\u30fc\u30d0\u306eIP\u30a2\u30c9\u30ec\u30b9\u3084\u3001\u5229\u7528\u3057\u3066\u3044\u308b\u5916\u90e8\u30b5\u30fc\u30d3\u30b9\u306e\u30c9\u30e1\u30a4\u30f3\u3092DNS\u306b\u516c\u958b\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53d7\u4fe1\u5074\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u306f\u3001\u30e1\u30fc\u30eb\u304c\u5c4a\u304f\u3068\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u306eSPF\u306e\u60c5\u5831\u3092DNS\u306b\u554f\u3044\u5408\u308f\u305b\u307e\u3059\u3002<br>\u30c9\u30e1\u30a4\u30f3\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3082\u3055\u3089\u306b\u8fbf\u308a\u3001 \u6700\u7d42\u7684\u306b\u8a31\u53ef\u3055\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9\u306e\u7bc4\u56f2\u3092\u6d17\u3044\u51fa\u3057\u307e\u3059\u3002\u305d\u306e\u3046\u3048\u3067\u3001\u5b9f\u969b\u306b\u30e1\u30fc\u30eb\u3092 \u9001\u3063\u3066\u304d\u305f\u30b5\u30fc\u30d0\u306eIP\u30a2\u30c9\u30ec\u30b9\u304c\u3001\u305d\u306e\u7bc4\u56f2\u306b\u542b\u307e\u308c\u308b\u304b\u3092\u7167\u5408\u3057\u307e\u3059\u3002<br>\u542b\u307e\u308c\u306a\u3051\u308c\u3070\u3001\u306a\u308a\u3059\u307e\u3057\u306e\u7591\u3044\u304c\u3042\u308b\u3068\u3057\u3066\u3001\u8b66\u544a\u8868\u793a\u3084\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u306e\u5bfe\u8c61\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-big_icon_check wp-block-paragraph\">SPF\u304c\u7167\u5408\u3057\u3066\u3044\u308b\u306e\u306f\u3001\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\u306e\u753b\u9762\u306b\u8868\u793a\u3055\u308c\u308b \u300cFrom\u300d\u6b04\u306e\u30c9\u30e1\u30a4\u30f3\u3067\u306f\u306a\u304f\u3001<strong>\u914d\u9001\u60c5\u5831\u3068\u3057\u3066\u4f7f\u308f\u308c\u308b\u5225\u306e\u30c9\u30e1\u30a4\u30f3\uff08\u30a8\u30f3\u30d9\u30ed\u30fc\u30d7From\uff09<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"813\" height=\"290\" src=\"https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/1b503e93d93ab7ec5c343755a85936a3.png\" alt=\"\" class=\"wp-image-12228\" srcset=\"https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/1b503e93d93ab7ec5c343755a85936a3.png 813w, https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/1b503e93d93ab7ec5c343755a85936a3-300x107.png 300w, https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/1b503e93d93ab7ec5c343755a85936a3-768x274.png 768w\" sizes=\"(max-width: 813px) 100vw, 813px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">DKIM\u3068\u306f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DKIM\uff08DomainKeys Identified Mail\uff09\u306f\u3001\u5c01\u7b52\u306b\u62bc\u3059\u300c\u672c\u4eba\u78ba\u8a8d\u6e08\u307f\u300d\u306e\u5370\u9451\u306b\u3042\u305f\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<br>\u9001\u4fe1\u5074\u306f\u30e1\u30fc\u30eb\u306b\u96fb\u5b50\u7f72\u540d\u3092\u4ed8\u3051\u3066\u9001\u308a\u3001\u53d7\u4fe1\u5074\u306f\u305d\u306e\u7f72\u540d\u3092\u691c\u8a3c\u3059\u308b\u3053\u3068\u3067\u3001 \u300c\u672c\u5f53\u306b\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u9001\u3089\u308c\u305f\u304b\u300d\u300c\u9014\u4e2d\u3067\u5185\u5bb9\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u300d\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ed5\u7d44\u307f\u3068\u3057\u3066\u306f\u3001\u9001\u4fe1\u5074\u304c\u3042\u3089\u304b\u3058\u3081<strong>\u300c\u79d8\u5bc6\u9375\u300d\u3068\u300c\u516c\u958b\u9375\u300d\u306e\u30da\u30a2\u3092\u7528\u610f\u3057\u3001 \u516c\u958b\u9375\u306e\u65b9\u3092DNS\u306b\u767b\u9332<\/strong>\u3057\u3066\u304a\u304d\u307e\u3059\u3002\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u3068\u304d\u306f\u3001\u672c\u6587\u3084\u30d8\u30c3\u30c0\u30fc\u306e\u60c5\u5831\u3092\u3082\u3068\u306b \u79d8\u5bc6\u9375\u3067\u96fb\u5b50\u7f72\u540d\u3092\u4f5c\u308a\u3001\u30e1\u30fc\u30eb\u306b\u6dfb\u4ed8\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53d7\u4fe1\u5074\u306f\u3001DNS\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u516c\u958b\u9375\u3092\u4f7f\u3063\u3066\u3053\u306e\u7f72\u540d\u3092\u691c\u8a3c\u3057\u3001\u9001\u4fe1\u6642\u306b\u8a08\u7b97\u3055\u308c\u305f \u30cf\u30c3\u30b7\u30e5\u5024\u3068\u3001\u73fe\u5728\u306e\u30e1\u30fc\u30eb\u304b\u3089\u8a08\u7b97\u3057\u305f\u30cf\u30c3\u30b7\u30e5\u5024\u304c\u4e00\u81f4\u3059\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<br>\u4e00\u81f4\u3059\u308c\u3070\u300c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u9001\u3089\u308c\u305f\u3001\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u30e1\u30fc\u30eb\u300d\u3068\u5224\u5b9a\u3067\u304d\u307e\u3059\u3002<br>\u9014\u4e2d\u3067\u672c\u6587\u304c\u66f8\u304d\u63db\u3048\u3089\u308c\u3066\u3044\u308b\u3068\u3001\u3053\u306e\u691c\u8a3c\u306b\u5931\u6557\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"830\" height=\"282\" src=\"https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/635d6ff7ec6a58cc8e41f961b239a15a.png\" alt=\"\" class=\"wp-image-12229\" srcset=\"https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/635d6ff7ec6a58cc8e41f961b239a15a.png 830w, https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/635d6ff7ec6a58cc8e41f961b239a15a-300x102.png 300w, https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/635d6ff7ec6a58cc8e41f961b239a15a-768x261.png 768w\" sizes=\"(max-width: 830px) 100vw, 830px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">DMARC\u3068\u306f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u307e\u3067\u306eSPF\u3068DKIM\u306f\u3001\u3042\u304f\u307e\u3067\u300c\u691c\u8a3c\u3059\u308b\u4ed5\u7d44\u307f\u300d\u3067\u3057\u304b\u3042\u308a\u307e\u305b\u3093\u3002<br>\u691c\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u3092\u5b9f\u969b\u306b\u3069\u3046\u6271\u3046\u304b\u3092\u6c7a\u3081\u308b\u306e\u304c\u3001DMARC\uff08Domain-based Message Authentication, Reporting and Conformance\uff09\u3067\u3059\u3002<br>DMARC\u3082\u3001\u8a8d\u8a3c\u5931\u6557\u6642\u306e\u6271\u3044\u65b9\u3092 DNS\u306b\u767b\u9332\u3057\u3066\u304a\u304f\u5f62\u3067\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DMARC\u304c\u300c\u5408\u683c\u300d\u3068\u5224\u5b9a\u3059\u308b\u6761\u4ef6\u306f\u3001\u5c11\u3057\u8fbc\u307f\u5165\u3063\u3066\u3044\u307e\u3059\u3002<br>\u300cSPF\u304bDKIM\u306e\u3069\u3061\u3089\u304b\u304c\u8a8d\u8a3c\u6210\u529f\u3057\u3066\u3044\u308c\u3070OK\u300d\u3068\u3044\u3046\u5358\u7d14\u306a\u8a71\u3067\u306f\u306a\u304f\u3001SPF\u3068DKIM\u305d\u308c\u305e\u308c\u306b\u3064\u3044\u3066\u3001\u300c\u8a8d\u8a3c\u6210\u529f\u300d\u3068\u300c\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\uff08From\u3068\u306e\u30c9\u30e1\u30a4\u30f3\u4e00\u81f4\uff09\u300d\u306e\u4e21\u65b9\u304c\u63c3\u3063\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u898b\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-border_left wp-block-paragraph\">\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3068\u306f\u3001\u305d\u306e\u8a8d\u8a3c\u3067\u4f7f\u308f\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u3068\u3001\u5b9f\u969b\u306b\u30e1\u30fc\u30eb\u306e\u300cFrom\u300d\u6b04\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u306e\u30c1\u30a7\u30c3\u30af\u306e\u3053\u3068\u3067\u3059\u3002<br>SPF\u3084DKIM\u306e\u8a8d\u8a3c\u81ea\u4f53\u306b\u6210\u529f\u3057\u3066\u3044\u3066\u3082\u3001\u8a8d\u8a3c\u5bfe\u8c61\u306e\u30c9\u30e1\u30a4\u30f3\u3068\u3001\u753b\u9762\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u5dee\u51fa\u4eba\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u9055\u3063\u3066\u3044\u308c\u3070\u3001\u305d\u306e\u8a8d\u8a3c\u306f\u300c\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3057\u3066\u3044\u306a\u3044\u300d\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"u-mb-ctrl u-mb-0 wp-block-paragraph\">\u305d\u306e\u3046\u3048\u3067DMARC\u306f\u3001\u6b21\u306e\u3069\u3061\u3089\u304b\u304c\u6210\u7acb\u3057\u3066\u3044\u308c\u3070\u5408\u683c\u3068\u5224\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list u-mb-ctrl u-mb-0\">\n<li>SPF\u304c\u8a8d\u8a3c\u6210\u529f \u304b\u3064 \u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3082\u4e00\u81f4\u3057\u3066\u3044\u308b<\/li>\n\n\n\n<li class=\"u-mb-ctrl u-mb-20\">\u307e\u305f\u306f\u3001DKIM\u304c\u8a8d\u8a3c\u6210\u529f \u304b\u3064 \u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3082\u4e00\u81f4\u3057\u3066\u3044\u308b<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3064\u307e\u308a\u3001<strong>\u300c\u8a8d\u8a3c\u6210\u529f\u300d\u3068\u300c\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u300d\u306f\u30bb\u30c3\u30c8\u30671\u3064\u306e\u5408\u5426\u3092\u4f5c\u308a\u3001\u305d\u306e\u5408\u5426\u304cSPF\u5074\u30fbDKIM\u5074\u306e\u3069\u3061\u3089\u304b\u4e00\u65b9\u3067\u6210\u7acb\u3057\u3066\u3044\u308c\u3070\u3088\u3044<\/strong>\u3001\u3068\u3044\u3046\u69cb\u9020\u3067\u3059\u3002<br>\u7247\u65b9\u304c\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u3066\u3044\u3066\u3082\u3001\u3082\u3046\u7247\u65b9\u304c\u300c\u8a8d\u8a3c\u6210\u529f\uff0b\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u4e00\u81f4\u300d\u3092\u6e80\u305f\u3057\u3066\u3044\u308c\u3070\u3001DMARC\u3068\u3057\u3066\u306f\u5408\u683c\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-big_icon_point wp-block-paragraph\">\u5b9f\u306f\u3001SPF\u3068DKIM\u3092\u8a2d\u5b9a\u3057\u305f\u3060\u3051\u3067\u306f\u300c\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u3092\u3069\u3046\u3059\u308b\u304b\u300d\u307e\u3067\u306f\u6c7a\u307e\u308a\u307e\u305b\u3093\u3002<br>DMARC\u306e\u30dd\u30ea\u30b7\u30fc\u3092\u300c\u4f55\u3082\u3057\u306a\u3044\u300d\u300c\u9694\u96e2\u3059\u308b\u300d\u300c\u62d2\u5426\u3059\u308b\u300d\u306e\u3069\u308c\u304b\u306b\u6307\u5b9a\u3057\u3066\u521d\u3081\u3066\u3001 \u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u3078\u306e\u5bfe\u5fdc\u304c\u52d5\u304d\u51fa\u3057\u307e\u3059\u3002<br>\u3044\u304d\u306a\u308a\u300c\u62d2\u5426\u3059\u308b\u300d\u306b\u3059\u308b\u3068\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u307e\u3067 \u5c4a\u304b\u306a\u304f\u306a\u308b\u30ea\u30b9\u30af\u304c\u3042\u308b\u305f\u3081\u3001\u6700\u521d\u306f\u300c\u4f55\u3082\u3057\u306a\u3044\u300d\u3067\u30ec\u30dd\u30fc\u30c8\u3060\u3051\u96c6\u3081\u3066\u5b9f\u614b\u3092\u898b\u3066\u304b\u3089\u3001 \u6bb5\u968e\u7684\u306b\u5f37\u3081\u3066\u3044\u304f\u306e\u304c\u5b9a\u77f3\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"828\" height=\"280\" src=\"https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/520afa59376b353b25ce71d330dbb4af.png\" alt=\"\" class=\"wp-image-12230\" srcset=\"https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/520afa59376b353b25ce71d330dbb4af.png 828w, https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/520afa59376b353b25ce71d330dbb4af-300x101.png 300w, https:\/\/ci.clara.jp\/media\/wp-content\/uploads\/2026\/09\/520afa59376b353b25ce71d330dbb4af-768x260.png 768w\" sizes=\"(max-width: 828px) 100vw, 828px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">3\u3064\u306e\u95a2\u4fc2\u3092\u6574\u7406\u3059\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td data-has-cell-bg=\"1\" data-text-color=\"black\"><span class=\"swl-cell-bg has-swl-main-thin-background-color\" data-text-color=\"black\" aria-hidden=\"true\">&nbsp;<\/span><strong>\u4ed5\u7d44\u307f<\/strong><\/td><td data-has-cell-bg=\"1\" data-text-color=\"black\"><span class=\"swl-cell-bg has-swl-main-thin-background-color\" data-text-color=\"black\" aria-hidden=\"true\">&nbsp;<\/span><strong>\u76ee\u7684<\/strong><\/td><td data-has-cell-bg=\"1\" data-text-color=\"black\"><span class=\"swl-cell-bg has-swl-main-thin-background-color\" data-text-color=\"black\" aria-hidden=\"true\">&nbsp;<\/span><strong>\u691c\u8a3c\u306e\u5bfe\u8c61<\/strong><\/td><td data-has-cell-bg=\"1\" data-text-color=\"black\"><span data-icon-size=\"l\" data-icon-type=\"bg\" class=\"swl-cell-bg has-swl-main-thin-background-color\" data-text-color=\"black\" aria-hidden=\"true\">&nbsp;<\/span><strong>\u5358\u4f53\u3067\u306e\u5f31\u70b9<\/strong><\/td><\/tr><tr><td>SPF<\/td><td>\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u304c\u6b63\u5f53\u304b\u3092\u78ba\u8a8d\u3059\u308b<\/td><td>\u30e1\u30fc\u30eb\u9001\u4fe1\u30b5\u30fc\u30d0\u306eIP\u30a2\u30c9\u30ec\u30b9<\/td><td>From\u30a2\u30c9\u30ec\u30b9\u306e\u507d\u88c5\u3084\u672c\u6587\u306e\u6539\u3056\u3093\u306f\u691c\u51fa\u3067\u304d\u306a\u3044<\/td><\/tr><tr><td>DKIM<\/td><td>\u30e1\u30fc\u30eb\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3092\u691c\u8a3c\u3059\u308b<\/td><td>\u96fb\u5b50\u7f72\u540d\u3068\u3001\u5bfe\u5fdc\u3059\u308b\u672c\u6587\u30fb\u30d8\u30c3\u30c0\u30fc<\/td><td>\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u306f\u691c\u8a3c\u3067\u304d\u3066\u3082\u3001From\u3068\u306e\u4e00\u81f4\u307e\u3067\u306f\u4fdd\u8a3c\u3057\u306a\u3044<\/td><\/tr><tr><td>DMARC<\/td><td>SPF\u30fbDKIM\u306e\u7d50\u679c\u3092\u3082\u3068\u306b\u3001\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306e\u6271\u3044\u3092\u6c7a\u3081\u308b<\/td><td>From\u30a2\u30c9\u30ec\u30b9\u306e\u6b63\u5f53\u6027\uff08\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\uff09\u3068\u3001SPF\u30fbDKIM\u306e\u7d50\u679c<\/td><td>SPF or DKIM\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u3068\u6a5f\u80fd\u3057\u306a\u3044<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">SPF\u3068DKIM\u306e\u3069\u3061\u3089\u304b\u4e00\u65b9\u3060\u3051\u3001\u3042\u308b\u3044\u306f\u4e21\u65b9\u8a2d\u5b9a\u3057\u3066\u3082DMARC\u304c\u306a\u3044\u3001 \u3068\u3044\u3046\u72b6\u614b\u3060\u3068\u7247\u624b\u843d\u3061\u306b\u306a\u308a\u304c\u3061\u3067\u3059\u3002<br>3\u3064\u30bb\u30c3\u30c8\u3067\u521d\u3081\u3066\u3001 \u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u3068\u3057\u3066\u6a5f\u80fd\u3059\u308b\u4ed5\u7d44\u307f\u3060\u3068\u899a\u3048\u3066\u304a\u304f\u3068\u7406\u89e3\u3057\u3084\u3059\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u3093\u306b\u3061\u306f\uff01\u30af\u30e9\u30e9\u30c6\u30af\u30cb\u30ab\u30eb\u30b5\u30dd\u30fc\u30c8\u3067\u3059\uff01 SPF\u30fbDKIM\u30fbDMARC\u306e\u8aac\u660e\u3092\u8aad\u3093\u3067\u307f\u305f\u3082\u306e\u306e\u3001 \u6b63\u76f4\u300c\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u300d\u3068\u3044\u3046\u304f\u304f\u308a\u3067\u5168\u90e8\u540c\u3058\u306b\u8003\u3048\u3066\u3057\u307e\u3063\u3066\u3044\u307e\u305b\u3093\u304b\uff1f\u4eca\u56de\u306f\u3001\u3053\u306e3\u3064\u306e\u5f79\u5272\u306e\u9055\u3044\u3092\u3001\u90f5\u4fbf\u7269\u306b\u305f\u3068\u3048\u306a [&hellip;]<\/p>\n","protected":false},"author":34,"featured_media":12366,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-12205","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-1"],"_links":{"self":[{"href":"https:\/\/ci.clara.jp\/media\/index.php?rest_route=\/wp\/v2\/posts\/12205","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ci.clara.jp\/media\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ci.clara.jp\/media\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ci.clara.jp\/media\/index.php?rest_route=\/wp\/v2\/users\/34"}],"replies":[{"embeddable":true,"href":"https:\/\/ci.clara.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12205"}],"version-history":[{"count":21,"href":"https:\/\/ci.clara.jp\/media\/index.php?rest_route=\/wp\/v2\/posts\/12205\/revisions"}],"predecessor-version":[{"id":12405,"href":"https:\/\/ci.clara.jp\/media\/index.php?rest_route=\/wp\/v2\/posts\/12205\/revisions\/12405"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ci.clara.jp\/media\/index.php?rest_route=\/wp\/v2\/media\/12366"}],"wp:attachment":[{"href":"https:\/\/ci.clara.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12205"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ci.clara.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12205"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ci.clara.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}