{"id":13799,"date":"2023-11-17T18:25:25","date_gmt":"2023-11-17T09:25:25","guid":{"rendered":"https:\/\/blastmail.jp\/blog\/?p=13799"},"modified":"2026-07-31T09:14:32","modified_gmt":"2026-07-31T00:14:32","slug":"gmail-guideline-202402","status":"publish","type":"post","link":"https:\/\/blastmail.jp\/blog\/spam\/gmail-guideline-202402","title":{"rendered":"\u30102026\u5e74\u7248\u3011Gmail\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u5b8c\u5168\u30ac\u30a4\u30c9\uff5cSPF\u30fbDKIM\u30fbDMARC\u30685,000\u901a\u30eb\u30fc\u30eb\u3092\u89e3\u8aac"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2023\/11\/Gmail_guide.png\" alt=\"Gmail\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u5b8c\u5168\u30ac\u30a4\u30c9\" width=\"1733\" height=\"907\" class=\"alignnone size-full wp-image-22385\" 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href=\"https:\/\/blastmail.jp\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2023\/01\/bm_banner_big_mailsystem_1200x628.png\" alt=\"blastmail\u306e\u30d0\u30ca\u30fc\" width=\"1200\" height=\"629\" class=\"alignnone wp-image-19829 size-full\" 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href=\"https:\/\/support.google.com\/mail\/answer\/81126\" target=\"_blank\" rel=\"noopener\">\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/a><\/strong><\/p>\n<h3>\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u304c\u5b9a\u3081\u3089\u308c\u305f\u80cc\u666f<\/h3>\n<p>\u80cc\u666f\u306b\u3042\u308b\u306e\u306f\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3084\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u306b\u3088\u308b\u88ab\u5bb3\u306e\u6df1\u523b\u5316\u3067\u3059\u3002\u653b\u6483\u8005\u306f\u5b9f\u5728\u3059\u308b\u4f01\u696d\u3084\u30b5\u30fc\u30d3\u30b9\u3092\u88c5\u3063\u3066\u30e1\u30fc\u30eb\u3092\u9001\u308a\u3001\u8a8d\u8a3c\u60c5\u5831\u3084\u91d1\u92ad\u3092\u3060\u307e\u3057\u53d6\u308d\u3046\u3068\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u3046\u3057\u305f\u4e0d\u6b63\u306a\u30e1\u30fc\u30eb\u304b\u3089\u53d7\u4fe1\u8005\u3092\u5b88\u308b\u305f\u3081\u3001Google\u306f\u300c\u9001\u4fe1\u8005\u304c\u6b63\u5f53\u306a\u76f8\u624b\u3067\u3042\u308b\u3053\u3068\u3092\u6280\u8853\u7684\u306b\u8a3c\u660e\u3059\u308b\u300d\u3053\u3068\u3092\u9001\u4fe1\u5074\u306b\u6c42\u3081\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u8ef8\u3068\u3057\u305f\u4e00\u9023\u306e\u8981\u4ef6\u306f\u3001\u3053\u306e\u8003\u3048\u65b9\u306b\u3082\u3068\u3065\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u5bfe\u8c61\u306f\u300c\u500b\u4eba\u7528Gmail\u30a2\u30ab\u30a6\u30f3\u30c8\u300d\u5b9b\u3066\u306e\u30e1\u30fc\u30eb<\/h3>\n<p>\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u304c\u9069\u7528\u3055\u308c\u308b\u306e\u306f\u3001<strong>\u500b\u4eba\u7528Gmail\u30a2\u30ab\u30a6\u30f3\u30c8\u5b9b\u3066<\/strong>\u306e\u30e1\u30fc\u30eb\u3067\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u6b21\u306e2\u3064\u304c\u5bfe\u8c61\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u672b\u5c3e\u304c\u300c@gmail.com\u300d<\/li>\n<li>\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u672b\u5c3e\u304c\u300c@googlemail.com\u300d<\/li>\n<\/ul>\n<\/div>\n<p>\u4e00\u65b9\u3001\u4f01\u696d\u3084\u5b66\u6821\u304c\u5229\u7528\u3059\u308bGoogle Workspace\uff08\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u306e\u6cd5\u4eba\u5411\u3051Gmail\uff09\u5b9b\u3066\u306f\u5bfe\u8c61\u5916\u3067\u3059\u3002\u3053\u308c\u306f2023\u5e7412\u6708\u306e\u66f4\u65b0\u3067\u660e\u8a18\u3055\u308c\u307e\u3057\u305f\u3002\u53d7\u4fe1\u5074\u304cWorkspace\u304b\u3069\u3046\u304b\u3067\u9069\u7528\u306e\u6709\u7121\u304c\u5909\u308f\u308b\u3001\u3068\u3044\u3046\u70b9\u306f\u62bc\u3055\u3048\u3066\u304a\u304d\u305f\u3044\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u81ea\u793e\u306e\u914d\u4fe1\u30ea\u30b9\u30c8\u306b\u500b\u4eba\u7528Gmail\u304c\u3069\u308c\u3060\u3051\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u3092\u6b63\u78ba\u306b\u5224\u5225\u3059\u308b\u306e\u306f\u56f0\u96e3\u3067\u3059\u3002\u30ea\u30b9\u30c8\u306e\u5927\u534a\u304c\u500b\u4eba\u7528Gmail\u3001\u3068\u3044\u3046\u30b1\u30fc\u30b9\u3082\u73cd\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002Workspace\u5b9b\u3066\u3082\u5c06\u6765\u7684\u306b\u5bfe\u8c61\u3078\u5e83\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001<strong>\u3059\u3079\u3066\u306e\u914d\u4fe1\u3067\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u6e96\u62e0\u3057\u3066\u304a\u304f<\/strong>\u306e\u304c\u73fe\u5b9f\u7684\u306a\u5bfe\u5fdc\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u8981\u4ef6\u306e\u5168\u4f53\u50cf<\/h2>\n<p>Gmail\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u8981\u4ef6\u306f\u3001<strong>\u500b\u4eba\u7528Gmail\u5b9b\u3066\u306e1\u65e5\u3042\u305f\u308a\u306e\u9001\u4fe1\u901a\u6570<\/strong>\u306b\u3088\u3063\u30662\u6bb5\u968e\u306b\u5206\u304b\u308c\u307e\u3059\u3002\u5883\u754c\u3068\u306a\u308b\u306e\u304c\u300c1\u65e55,000\u901a\u300d\u3067\u3059\u3002<\/p>\n<p>\u9001\u4fe1\u901a\u6570\u3092\u554f\u308f\u305a\u3059\u3079\u3066\u306e\u9001\u4fe1\u8005\u306b\u8ab2\u3055\u308c\u308b\u8981\u4ef6\u304c\u3042\u308a\u3001\u305d\u308c\u306b\u52a0\u3048\u3066\u30011\u65e55,000\u901a\u4ee5\u4e0a\u3092\u9001\u308b\u300c\u4e00\u62ec\u9001\u4fe1\u8005\u300d\u306b\u306f\u3088\u308a\u53b3\u683c\u306a\u8981\u4ef6\u304c\u4e0a\u4e57\u305b\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3>\u3059\u3079\u3066\u306e\u9001\u4fe1\u8005\u306b\u6c42\u3081\u3089\u308c\u308b\u8981\u4ef6<\/h3>\n<p>\u9001\u4fe1\u901a\u6570\u306b\u304b\u304b\u308f\u3089\u305a\u3001\u500b\u4eba\u7528Gmail\u5b9b\u3066\u306b\u30e1\u30fc\u30eb\u3092\u9001\u308b\u3059\u3079\u3066\u306e\u9001\u4fe1\u8005\u304c\u6e80\u305f\u3059\u3079\u304d\u8981\u4ef6\u3067\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>SPF\u307e\u305f\u306fDKIM\u306e\u3044\u305a\u308c\u304b\u306e\u30e1\u30fc\u30eb\u8a8d\u8a3c\u3092\u8a2d\u5b9a\u3059\u308b<\/li>\n<li>\u9001\u4fe1\u5143\u306e\u30c9\u30e1\u30a4\u30f3\u30fbIP\u306b\u3001\u6709\u52b9\u306a\u6b63\u5f15\u304d\u30fb\u9006\u5f15\u304dDNS\uff08PTR\u30ec\u30b3\u30fc\u30c9\uff09\u3092\u8a2d\u5b9a\u3059\u308b<\/li>\n<li>\u9001\u4fe1\u6642\u306bTLS\u63a5\u7d9a\u3092\u4f7f\u7528\u3059\u308b<\/li>\n<li>\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u3092\u4f4e\u304f\u4fdd\u3064\uff08Postmaster Tools\u3067\u76e3\u8996\uff09<\/li>\n<li>\u6709\u52b9\u306aFrom\u30fbTo\u3092\u8a2d\u5b9a\u3057\u3001RFC 5322\u306b\u6e96\u62e0\u3057\u305f\u5f62\u5f0f\u3067\u9001\u4fe1\u3059\u308b<\/li>\n<li>\u5dee\u51fa\u4eba\u3092\u507d\u308b\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u3092\u3057\u306a\u3044\uff08Gmail\u306fFrom\u507d\u88c5\u306bquarantine\u30dd\u30ea\u30b7\u30fc\u3092\u9069\u7528\uff09<\/li>\n<\/ul>\n<\/div>\n<h3>1\u65e55,000\u901a\u4ee5\u4e0a\u306e\u9001\u4fe1\u8005\u306b\u6c42\u3081\u3089\u308c\u308b\u8ffd\u52a0\u8981\u4ef6<\/h3>\n<p>\u500b\u4eba\u7528Gmail\u5b9b\u3066\u306b1\u65e55,000\u901a\u8fd1\u304f\u3001\u307e\u305f\u306f\u305d\u308c\u4ee5\u4e0a\u3092\u9001\u4fe1\u3059\u308b\u300c\u4e00\u62ec\u9001\u4fe1\u8005\u300d\u306b\u306f\u3001\u4e0a\u8a18\u306b\u52a0\u3048\u3066\u6b21\u306e\u5bfe\u5fdc\u304c\u5fc5\u9808\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>SPF\u3068DKIM\u306e\u4e21\u65b9\u3092\u8a2d\u5b9a\u3059\u308b<\/li>\n<li>DMARC\u3092\u8a2d\u5b9a\u3059\u308b\uff08\u9069\u7528\u30dd\u30ea\u30b7\u30fc\u306fnone\u3067\u3082\u53ef\uff09<\/li>\n<li>DMARC\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u901a\u3059\uff08\u30d8\u30c3\u30c0\u30fcFrom\u306e\u30c9\u30e1\u30a4\u30f3\u3092SPF\u307e\u305f\u306fDKIM\u306e\u8a8d\u8a3c\u30c9\u30e1\u30a4\u30f3\u3068\u4e00\u81f4\u3055\u305b\u308b\uff09<\/li>\n<li>\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30e1\u30fc\u30eb\u30fb\u914d\u4fe1\u767b\u9332\u30e1\u30fc\u30eb\u306b\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u89e3\u9664\u3092\u5b9f\u88c5\u3059\u308b<\/li>\n<li>\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u30920.10%\u672a\u6e80\u306b\u7dad\u6301\u3057\u30010.30%\u4ee5\u4e0a\u306b\u3057\u306a\u3044<\/li>\n<\/ul>\n<\/div>\n<p>\u203b5,000\u901a\u672a\u6e80\u3067\u3042\u3063\u3066\u3082\u3001\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u306e\u89b3\u70b9\u304b\u3089SPF\u30fbDKIM\u30fbDMARC\u306e3\u70b9\u3092\u3059\u3079\u3066\u8a2d\u5b9a\u3057\u3066\u304a\u304f\u306e\u304c\u5b89\u5168\u3067\u3059\u3002<\/p>\n<h3>\u300c1\u65e55,000\u901a\u300d\u306e\u30ab\u30a6\u30f3\u30c8\u65b9\u6cd5\u306f\uff1f<\/h3>\n<p>5,000\u901a\u306f\u3001<strong>24\u6642\u9593\u4ee5\u5185\u306b\u3001\u540c\u4e00\u306e\u30d7\u30e9\u30a4\u30de\u30ea\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u3001\u500b\u4eba\u7528Gmail\u5b9b\u3066\u306b\u9001\u4fe1\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306e\u5408\u8a08<\/strong>\u3067\u30ab\u30a6\u30f3\u30c8\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3053\u3053\u3067\u3001\u6ce8\u610f\u3059\u3079\u304d\u30dd\u30a4\u30f3\u30c8\u304c3\u3064\u3042\u308a\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3082\u5408\u7b97\u3055\u308c\u308b\uff08\u4f8b\u3048\u3070\u300c@blastmail.jp\u300d\u300c@news.blastmail.jp\u300d\u304b\u3089\u306e\u914d\u4fe1\u306f\u5408\u8a08\u3055\u308c\u308b<\/li>\n<li>\u8907\u6570\u306e\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u4f75\u7528\u3057\u3066\u3044\u3066\u3082\u3001\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u304c\u540c\u3058\u306a\u3089\u5408\u7b97\u3055\u308c\u308b<\/li>\n<li>24\u6642\u9593\u4ee5\u5185\u306b\u4e00\u5ea6\u3067\u3082\u6761\u4ef6\u3092\u6e80\u305f\u3059\u3068\u3001\u4ee5\u964d\u306f\u5e38\u306b\u4e00\u62ec\u9001\u4fe1\u8005\u3068\u3057\u3066\u6271\u308f\u308c\u308b<\/li>\n<\/ul>\n<\/div>\n<p>\u306a\u304a\u3001\u30d5\u30ea\u30fc\u30e1\u30fc\u30eb\uff08@gmail.com\u3084@yahoo.co.jp\u306a\u3069\uff09\u3092\u9001\u4fe1\u5143\u3068\u3057\u305f\u5927\u91cf\u914d\u4fe1\u306f\u3001\u305d\u3082\u305d\u3082\u4e00\u6589\u914d\u4fe1\u306b\u9069\u3057\u3066\u3044\u307e\u305b\u3093\u3002\u3053\u306e\u6a5f\u4f1a\u306b\u914d\u4fe1\u7528\u306e\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u3092\u7528\u610f\u3059\u308b\u3053\u3068\u3092\u63a8\u5968\u3057\u307e\u3059\u3002<\/p>\n<h2>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\uff08SPF\u30fbDKIM\u30fbDMARC\uff09<\/h2>\n<p>\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u5bfe\u5fdc\u306e\u4e2d\u5fc3\u3068\u306a\u308b\u306e\u304c\u3001<strong>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c<\/strong>\u3067\u3042\u308bSPF\u30fbDKIM\u30fbDMARC\u306e3\u3064\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u30e1\u30fc\u30eb\u306b\u306f\u3001\u5bfe\u7b56\u3092\u3057\u306a\u3051\u308c\u3070\u3001\u53d7\u4fe1\u8005\u306b\u8868\u793a\u3055\u308c\u308b\u5dee\u51fa\u4eba\u30a2\u30c9\u30ec\u30b9\u3092\u81ea\u7531\u306b\u8a50\u79f0\u3067\u304d\u3066\u3057\u307e\u3046\u3068\u3044\u3046\u5f31\u70b9\u304c\u3042\u308a\u307e\u3059\u3002\u306a\u308a\u3059\u307e\u3057\u306f\u3053\u306e\u5f31\u70b9\u3092\u7a81\u3044\u305f\u624b\u53e3\u3067\u3059\u3002SPF\u30fbDKIM\u30fbDMARC\u306f\u3001\u3053\u308c\u306b\u5bfe\u3057\u300c\u5c4a\u3044\u305f\u30e1\u30fc\u30eb\u304c\u3001\u540d\u4e57\u3063\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u672c\u5f53\u306b\u9001\u3089\u308c\u305f\u672c\u7269\u304b\u3069\u3046\u304b\u300d\u3092\u53d7\u4fe1\u5074\u304c\u898b\u7834\u308c\u308b\u3088\u3046\u306b\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<h3>SPF\uff1a\u9001\u4fe1\u5143\u30b5\u30fc\u30d0\u30fc\u3092IP\u30a2\u30c9\u30ec\u30b9\u3067\u8a8d\u8a3c\u3059\u308b<\/h3>\n<p>SPF\uff08Sender Policy Framework\uff09\u306f\u3001<strong>\u6b63\u898f\u306e\u9001\u4fe1\u30b5\u30fc\u30d0\u30fc\u3092\u300c\u540d\u7c3f\u300d\u3068\u3057\u3066\u3042\u3089\u304b\u3058\u3081\u516c\u958b\u3057\u3066\u304a\u304f<\/strong>\u4ed5\u7d44\u307f\u3067\u3059\u3002\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306eDNS\uff08Domain Name System\uff09\u306b\u300c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u30e1\u30fc\u30eb\u306f\u3001\u3053\u308c\u3089\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u9001\u3089\u308c\u307e\u3059\u300d\u3068\u3044\u3046\u8a31\u53ef\u30ea\u30b9\u30c8\u3092\u3001TXT\u30ec\u30b3\u30fc\u30c9\u3068\u3057\u3066\u767b\u9332\u3057\u307e\u3059\u3002<\/p>\n<p>\u53d7\u4fe1\u5074\u306f\u3001\u30e1\u30fc\u30eb\u3092\u9001\u3063\u3066\u304d\u305f\u30b5\u30fc\u30d0\u30fc\u306eIP\u30a2\u30c9\u30ec\u30b9\u304c\u3001\u3053\u306e\u540d\u7c3f\u306b\u8f09\u3063\u3066\u3044\u308b\u304b\u3092\u7167\u5408\u3057\u307e\u3059\u3002\u8f09\u3063\u3066\u3044\u308c\u3070\u6b63\u898f\u306e\u9001\u4fe1\u5143\u3001\u8f09\u3063\u3066\u3044\u306a\u3051\u308c\u3070\u4e0d\u5be9\u3001\u3068\u5224\u65ad\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2023\/11\/spf.png\" alt=\"SPF\u8a8d\u8a3c\u306e\u4ed5\u7d44\u307f\" width=\"1536\" height=\"1024\" class=\"alignnone size-full wp-image-22370\" style=\"border: 1px solid #cccccc;\" \/><\/p>\n<p>SPF\u3092\u8a2d\u5b9a\u3059\u308b\u306b\u306f\u3001\u9001\u4fe1\u5074\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306eDNS\u5185\u306b\u3042\u308bTXT\u30ec\u30b3\u30fc\u30c9\u306b\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306a\u8a18\u8ff0\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-plain\" data-lang=\"Plain Text\"><code>v=spf1 ip4:192.0.2.0\/24 include:spf.example.com ~all<\/code><\/pre>\n<\/div>\n<ul>\n<li><strong>ip4<\/strong>\uff1a\u8a31\u53ef\u3059\u308b IP \u7bc4\u56f2<\/li>\n<li><strong>include<\/strong>\uff1a\u5225\u30c9\u30e1\u30a4\u30f3\u306e\u8a31\u53ef\u3059\u308b\u30ea\u30b9\u30c8\u3092\u53d6\u308a\u8fbc\u3080<\/li>\n<li><strong>~all<\/strong>\u307e\u305f\u306f<strong>-all<\/strong>\uff1a\u30ea\u30b9\u30c8\u306b\u306a\u3044\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u5c4a\u3044\u305f\u30e1\u30fc\u30eb\u306e\u6271\u3044<br \/>\n\uff08~all\u306a\u3089\u4e0d\u5be9\u30e1\u30fc\u30eb\u3068\u3057\u3066\u6271\u3044\u3001-all\u306a\u3089\u53d7\u4fe1\u62d2\u5426\uff09<\/li>\n<\/ul>\n<p>\u8a2d\u5b9a\u4e0a\u306e\u843d\u3068\u3057\u7a74\u3068\u3057\u3066\u3001SPF\u306b\u306f<strong>DNS\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u56de\u6570\u304c10\u56de\u307e\u3067\u3068\u3044\u3046\u4e0a\u9650<\/strong>\u304c\u3042\u308a\u307e\u3059\u3002include\u3092\u591a\u91cd\u306b\u30cd\u30b9\u30c8\u3059\u308b\u3068\u4e0a\u9650\u3092\u8d85\u3048\u3066\u30a8\u30e9\u30fc\uff08permerror\uff09\u306b\u306a\u308a\u3001\u8a8d\u8a3c\u81ea\u4f53\u304c\u7121\u52b9\u5316\u3055\u308c\u307e\u3059\u3002\u8907\u6570\u30b5\u30fc\u30d3\u30b9\u3092\u4f75\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>SPF\u306e\u4ed5\u7d44\u307f\u3084\u8a2d\u5b9a\u65b9\u6cd5\u306e\u8a73\u7d30\u306f\u4e0b\u8a18\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n  <div class=\"blogcard\">\n  <a href=\"\/blog\/spam\/spf-record\">\n   <div class=\"blogcard_thumbnail\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2020\/05\/SPF_banner.png\" alt=\"SPF\uff08Sender Policy Framework\uff09\u3068\u306f\uff1f\uff5c\u30e1\u30fc\u30eb\u8a8d\u8a3c\u306e\u4ed5\u7d44\u307f\u30fbSPF\u30ec\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\" width=\"90\" height=\"47\" \/><\/div>\n   <div class=\"blogcard_content\">\n    <div class=\"blogcard_title\">SPF\uff08Sender Policy Framework\uff09\u3068\u306f\uff1f\uff5c\u30e1\u30fc\u30eb\u8a8d\u8a3c\u306e\u4ed5\u7d44\u307f\u30fbSPF\u30ec\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac<\/div>\n    <div class=\"blogcard_excerpt\">SPF\u3068\u306f\u3001\u300c\u3053\u306e\u30e1\u30fc\u30eb\u306f\u6b63\u3057\u3044\u9001\u4fe1\u5143\u304b\u3089\u9001\u3089\u308c\u3066\u3044\u307e\u3059\u300d\u3068\u53d7\u4fe1\u5074\u306b\u8a3c\u660e\u3059\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u306e\u3053\u3068\u3067\u3059\u3002\u300cSender Policy Framewo\u2026<\/div>\n   <\/div>\n   <div class=\"clear\"><\/div>\n  <\/a>\n  <\/div>\n<h3>DKIM\uff1a\u96fb\u5b50\u7f72\u540d\u3067\u30e1\u30fc\u30eb\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3068\u8a3c\u660e\u3059\u308b<\/h3>\n<p>DKIM\uff08Domain Keys Identified Mail\uff09\u306f\u3001\u30e1\u30fc\u30eb\u306b<strong>\u300c\u96fb\u5b50\u7f72\u540d\u300d\u3092\u4ed8\u4e0e\u3057\u3001\u30e1\u30fc\u30eb\u304c\u6b63\u3057\u3044\u9001\u4fe1\u5143\u304b\u3089\u9001\u3089\u308c\u3066\u3044\u308b\u3053\u3068\u3001\u305d\u306e\u5185\u5bb9\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u8a8d\u8a3c\u3059\u308b\u6280\u8853<\/strong>\u3067\u3059\u3002<\/p>\n<p>\u9001\u4fe1\u5074\u306f\u3001\u30da\u30a2\u306b\u306a\u308b\u300c\u79d8\u5bc6\u9375\u300d\u3068\u300c\u516c\u958b\u9375\u300d\u3092\u4f5c\u308a\u3001\u79d8\u5bc6\u9375\u3092\u4f7f\u3063\u3066\u30e1\u30fc\u30eb\u306b\u96fb\u5b50\u7f72\u540d\u3092\u4ed8\u4e0e\u3057\u307e\u3059\u3002\u7f72\u540d\u304c\u6b63\u3057\u3044\u3082\u306e\u304b\u691c\u8a3c\u3059\u308b\u305f\u3081\u306e\u516c\u958b\u9375\u306f\u3001DNS\u5185\u306bTXT\u30ec\u30b3\u30fc\u30c9\u3068\u3057\u3066\u516c\u958b\u3057\u3066\u304a\u304d\u3001\u53d7\u4fe1\u5074\u306f\u3053\u306e\u516c\u958b\u9375\u3067\u7f72\u540d\u3092\u7167\u5408\u3057\u307e\u3059\u3002\u7f72\u540d\u304c\u6b63\u3057\u304f\u691c\u8a3c\u3067\u304d\u308c\u3070\u3001\u300c\u78ba\u304b\u306b\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u9001\u3063\u305f\u30e1\u30fc\u30eb\u3067\u3042\u308a\u3001\u914d\u9001\u306e\u9014\u4e2d\u3067\u5185\u5bb9\u304c\u66f8\u304d\u63db\u3048\u3089\u308c\u3066\u3044\u306a\u3044\u300d\u3053\u3068\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2022\/09\/DKIM_mechanism_2.png\" alt=\"DKIM\u306e\u4ed5\u7d44\u307f\" width=\"1668\" height=\"879\" class=\"alignnone size-full wp-image-22392\" style=\"border: 1px solid #cccccc;\" \/><\/p>\n<h4>\u7b2c\u4e09\u8005\u7f72\u540d\u3068\u4f5c\u6210\u8005\u7f72\u540d\u306e\u9055\u3044<\/h4>\n<p>\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u4f7f\u3063\u3066\u3044\u308b\u5834\u5408\u3001DKIM\u306e\u7f72\u540d\u3092\u300c\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306e\u30c9\u30e1\u30a4\u30f3\u300d\u3068\u300c\u81ea\u793e\u306e\u30c9\u30e1\u30a4\u30f3\u300d\u306e\u3069\u3061\u3089\u3067\u884c\u3046\u304b\u3068\u3044\u3046\u9078\u629e\u304c\u751f\u3058\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>\u7b2c\u4e09\u8005\u7f72\u540d<\/strong>\uff1a\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u5074\u306e\u30c9\u30e1\u30a4\u30f3\u3067\u7f72\u540d\u3059\u308b\u65b9\u5f0f<\/li>\n<li><strong>\u4f5c\u6210\u8005\u7f72\u540d<\/strong>\uff1a\u81ea\u793e\u306e\u30c9\u30e1\u30a4\u30f3\u3067\u7f72\u540d\u3059\u308b\u65b9\u5f0f<\/li>\n<\/ul>\n<\/div>\n<p>\u4f5c\u6210\u8005\u7f72\u540d\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u306e\u30c9\u30e1\u30a4\u30f3\u3068DKIM\u7f72\u540d\u306b\u4f7f\u7528\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\u3057\u3001\u3053\u306e\u72b6\u614b\u3092\u300cDKIM\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304c\u4e00\u81f4\u300d\u3068\u8868\u73fe\u3057\u307e\u3059\u3002<\/p>\n<p>\u5f8c\u8ff0\u3059\u308bDMARC\u3092\u8a2d\u5b9a\u3059\u308b\u305f\u3081\u306b\u306f\u3001<\/p>\n<ul>\n<li>SPF\u8a8d\u8a3c\u304cpass\u3001\u304b\u3064 SPF\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304c\u4e00\u81f4<\/li>\n<li>DKIM\u8a8d\u8a3c\u304cpass\u3001\u304b\u3064 DKIM\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304c\u4e00\u81f4<\/li>\n<\/ul>\n<p>\u4e0b\u8a182\u3064\u306e\u3046\u3061\u3044\u305a\u308c\u304b\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3059\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001DMARC\u307e\u3067\u5bfe\u5fdc\u3059\u308b\u5834\u5408\u306f\u3001<strong>\u4f5c\u6210\u8005\u7f72\u540d\u3092\u9078\u3076\u3053\u3068\u304c\u5f37\u304f\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/strong><\/p>\n<p>DKIM\u306e\u8a73\u3057\u3044\u4ed5\u7d44\u307f\u3084\u8a2d\u5b9a\u65b9\u6cd5\u306f\u4e0b\u8a18\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n  <div class=\"blogcard\">\n  <a href=\"\/blog\/mail-delivery\/dkim\">\n   <div class=\"blogcard_thumbnail\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2022\/09\/DKIM_banner.png\" alt=\"DKIM\uff08\u30c7\u30a3\u30fc\u30ad\u30e0\uff09\u3068\u306f\uff1f\uff5c\u4ed5\u7d44\u307f\u304b\u3089\u8a2d\u5b9a\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\uff01\" width=\"90\" height=\"47\" \/><\/div>\n   <div class=\"blogcard_content\">\n    <div class=\"blogcard_title\">DKIM\uff08\u30c7\u30a3\u30fc\u30ad\u30e0\uff09\u3068\u306f\uff1f\uff5c\u4ed5\u7d44\u307f\u304b\u3089\u8a2d\u5b9a\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\uff01<\/div>\n    <div class=\"blogcard_excerpt\">DKIM\u3063\u3066\u3069\u3093\u306a\u4ed5\u7d44\u307f\uff1fGmail\u3084Outlook\u306b\u306f\u63a1\u7528\u3055\u308c\u3066\u3044\u308b\u306e\uff1f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u306e1\u3064\u3067\u3042\u308bDKIM\u306e\u4ed5\u7d44\u307f\u3084\u5f79\u5272\u306b\u3064\u3044\u3066\u56f3\u89e3\u3057\u307e\u2026<\/div>\n   <\/div>\n   <div class=\"clear\"><\/div>\n  <\/a>\n  <\/div>\n<h3>DMARC\uff1a\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306e\u6271\u3044\u3092\u6307\u5b9a\u3059\u308b<\/h3>\n<p>DMARC\uff08Domain-based Message Authentication, Reporting and Conformance\uff09\u306f\u3001\u300cSPF\u3068DKIM\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u3092\u3069\u306e\u3088\u3046\u306b\u6271\u3046\u304b\u300d\u3092\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u8005\u304c\u6307\u5b9a\u3059\u308b\u3068\u3044\u3046\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<p>\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u3092\u3069\u306e\u3088\u3046\u306b\u6271\u3046\u304b\u3068\u3044\u3046\u6307\u793a\u306f3\u901a\u308a\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>none<\/strong>\uff1a\u51e6\u7406\u3092\u6307\u793a\u305b\u305a\u3001\u53d7\u4fe1\u5074\u306e\u5224\u65ad\u306b\u59d4\u306d\u308b<\/li>\n<li><strong>quarantine\uff08\u9694\u96e2\uff09<\/strong>\uff1a\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u3092\u9694\u96e2\u3059\u308b\uff08\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u3078\uff09<\/li>\n<li><strong>reject\uff08\u62d2\u5426\uff09<\/strong>\uff1a\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u3092\u53d7\u3051\u53d6\u3089\u306a\u3044<\/li>\n<\/ul>\n<p>none\u304c\u6700\u3082\u7de9\u304f\u3001reject\u304c\u6700\u3082\u53b3\u3057\u3044\u5bfe\u5fdc\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u8a2d\u5b9a\u65b9\u6cd5\u3068\u3057\u3066\u306f\u3001DNS\u306eTXT\u30ec\u30b3\u30fc\u30c9\u306b\u4e0b\u8a18\u306e\u3088\u3046\u306a\u8a18\u8ff0\u3092\u8ffd\u52a0\u3057\u3001p=\u306e\u90e8\u5206\u3067\u5bfe\u5fdc\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-plain\" data-lang=\"Plain Text\"><code>v=DMARC1; p=none; rua=mailto:dmarc@example.com<\/code><\/pre>\n<\/div>\n<div class=\"list04\">\n<ul>\n<li>p\uff1a\u9069\u7528\u30dd\u30ea\u30b7\u30fc\uff08none\uff0fquarantine\uff0freject\uff09\u3002\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306e\u6271\u3044\u3092\u6307\u5b9a\u3059\u308b<\/li>\n<li>rua\uff1a\u96c6\u8a08\u30ec\u30dd\u30fc\u30c8\uff08aggregate report\uff09\u306e\u9001\u4ed8\u5148\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3002\u8a8d\u8a3c\u72b6\u6cc1\u3092\u7d99\u7d9a\u7684\u306b\u628a\u63e1\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/div>\n<p>Gmail\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3068\u3057\u3066\u306f\u3001<strong>DMARC\u306e\u9069\u7528\u30dd\u30ea\u30b7\u30fc\u306fnone\uff0fquarantine\uff0freject\u306e\u3044\u305a\u308c\u3067\u3042\u3063\u3066\u3082\u3088\u3044\u3068\u3055\u308c\u3066\u3044\u307e\u3059<\/strong>\u3002\u305f\u3060\u3057none\u306f\u76e3\u8996\u306e\u307f\u3067\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u305d\u306e\u3082\u306e\u3092\u6b62\u3081\u308b\u52b9\u679c\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u307e\u305a\u306fnone\u3067DMARC\u3092\u8a2d\u5b9a\u3057\u3001rua\u3067\u5c4a\u304f\u96c6\u8a08\u30ec\u30dd\u30fc\u30c8\u304b\u3089\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u3092\u88c5\u3046\u4e0d\u6b63\u306a\u9001\u4fe1\u304c\u306a\u3044\u304b\u3092\u628a\u63e1\u3057\u305f\u3046\u3048\u3067\u3001\u6bb5\u968e\u7684\u306bquarantine\u30fbreject\u3078\u5f37\u5316\u3057\u3066\u3044\u304f\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001Google\u306fSPF\u3068DKIM\u3092\u8a2d\u5b9a\u3057\u3066\u304b\u308948\u6642\u9593\u4ee5\u4e0a\u7d4c\u904e\u3057\u305f\u5f8c\u306bDMARC\u3092\u6709\u52b9\u5316\u3059\u308b\u3088\u3046\u6848\u5185\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>DMARC\u306e\u8a73\u7d30\u3068\u8a2d\u5b9a\u65b9\u6cd5\u306f\u4e0b\u8a18\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n  <div class=\"blogcard\">\n  <a href=\"\/blog\/spam\/dmarc-mail\">\n   <div class=\"blogcard_thumbnail\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2020\/07\/DMARC.png\" alt=\"DMARC\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u30fb\u8a2d\u5b9a\u65b9\u6cd5\u30fbBIMI\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u30102026\u5e74\u6700\u65b0\u3011\" width=\"90\" height=\"47\" \/><\/div>\n   <div class=\"blogcard_content\">\n    <div class=\"blogcard_title\">DMARC\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u30fb\u8a2d\u5b9a\u65b9\u6cd5\u30fbBIMI\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u30102026\u5e74\u6700\u65b0\u3011<\/div>\n    <div class=\"blogcard_excerpt\">\u30e1\u30fc\u30eb\u914d\u4fe1\u306e\u73fe\u5834\u3067\u300cDMARC\u300d\u3068\u3044\u3046\u8a00\u8449\u3092\u76ee\u306b\u3059\u308b\u6a5f\u4f1a\u304c\u5897\u3048\u3066\u3044\u307e\u3059\u3002SPF\u3084DKIM\u3068\u4e26\u3079\u3066\u8a9e\u3089\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u3082\u306e\u306e\u3001\u3053\u306e3\u3064\u304c\u3069\u3046\u9055\u3044\u3001D\u2026<\/div>\n   <\/div>\n   <div class=\"clear\"><\/div>\n  <\/a>\n  <\/div>\n<h4>\u3064\u307e\u3065\u304d\u3084\u3059\u3044DMARC\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8<\/h4>\n<p>DMARC\u5bfe\u5fdc\u3067\u6700\u3082\u3064\u307e\u305a\u304d\u3084\u3059\u3044\u306e\u304c\u300c\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u300d\u3067\u3059\u3002\u3053\u3053\u3067\u3001\u524d\u63d0\u30921\u3064\u88dc\u8db3\u3057\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u306f\u30011\u901a\u306e\u30e1\u30fc\u30eb\u306b\u306f\u5dee\u51fa\u4eba\u306e\u60c5\u5831\u304c2\u304b\u6240\u3042\u308a\u307e\u3059\u3002\u53d7\u4fe1\u8005\u306e\u753b\u9762\u306b\u8868\u793a\u3055\u308c\u308b<strong>\u30d8\u30c3\u30c0\u30fcFrom<\/strong>\u3068\u3001\u914d\u9001\u306e\u305f\u3081\u306b\u88cf\u5074\u3067\u4f7f\u308f\u308c\u308b<strong>\u30a8\u30f3\u30d9\u30ed\u30fc\u30d7From\uff08Return-Path\uff09<\/strong>\u3067\u3059\u3002\u901a\u5e38\u306f\u4e21\u8005\u3092\u305d\u308d\u3048\u307e\u3059\u304c\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u4f7f\u3046\u3068\u3001\u30a8\u30f3\u30d9\u30ed\u30fc\u30d7From\u304c\u30b7\u30b9\u30c6\u30e0\u5074\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3068\u306f\u3001<strong>\u53d7\u4fe1\u8005\u306b\u898b\u3048\u308b\u30d8\u30c3\u30c0\u30fcFrom\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u3001SPF\u307e\u305f\u306fDKIM\u3067\u8a8d\u8a3c\u3055\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b<\/strong>\u3092\u691c\u8a3c\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002Gmail\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3067\u306f\u3001DMARC\u30ec\u30b3\u30fc\u30c9\u3092\u767b\u9332\u3059\u308b\u3060\u3051\u3067\u306f\u4e0d\u5341\u5206\u3067\u3001\u3053\u306e\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u6e80\u305f\u3057\u3066DMARC\u8a8d\u8a3c\u306bPASS\u3059\u308b\u3068\u3053\u308d\u307e\u3067\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>DMARC\u306f\u3001\u6b21\u306e\u3044\u305a\u308c\u304b\u3092\u6e80\u305f\u3057\u305f\u3068\u304d\u306bPASS\u3057\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>SPF\u304c\u8a8d\u8a3c\u306b\u6210\u529f\u3057\u3001\u304b\u3064\u305d\u306e\u30c9\u30e1\u30a4\u30f3\uff08\u30a8\u30f3\u30d9\u30ed\u30fc\u30d7From\uff09\u304c\u30d8\u30c3\u30c0\u30fcFrom\u3068\u6574\u5408\u3057\u3066\u3044\u308b<\/li>\n<li>DKIM\u304c\u8a8d\u8a3c\u306b\u6210\u529f\u3057\u3001\u304b\u3064\u305d\u306e\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\uff08d=\uff09\u304c\u30d8\u30c3\u30c0\u30fcFrom\u3068\u6574\u5408\u3057\u3066\u3044\u308b<\/li>\n<\/ul>\n<\/div>\n<p>\u3064\u307e\u308a\u3001SPF\u30fbDKIM\u306e\u3069\u3061\u3089\u304b\u4e00\u65b9\u3067\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304c\u53d6\u308c\u3066\u3044\u308c\u3070\u8a8d\u8a3c\u306f\u6210\u529f\u3057\u307e\u3059\u3002\u306a\u304a\u6574\u5408\u306e\u5224\u5b9a\u306b\u306f2\u3064\u306e\u30e2\u30fc\u30c9\u304c\u3042\u308a\u307e\u3059\u3002relaxed\uff08\u7de9\u548c\uff09\u306f\u7d44\u7e54\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\u3059\u308c\u3070\u3088\u304f\u3001\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306e\u9055\u3044\u3092\u8a31\u5bb9\u3057\u307e\u3059\u3002strict\uff08\u53b3\u683c\uff09\u306f\u5b8c\u5168\u4e00\u81f4\u3092\u6c42\u3081\u307e\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u306frelaxed\u3067\u3059\u3002<\/p>\n<p>\u6ce8\u610f\u304c\u5fc5\u8981\u306a\u306e\u306f\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3067\u3059\u3002SPF\u304c\u8a8d\u8a3c\u3059\u308b\u30a8\u30f3\u30d9\u30ed\u30fc\u30d7From\u306f\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u5074\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u306a\u308b\u3053\u3068\u304c\u591a\u304f\u3001\u305d\u306e\u5834\u5408\u30d8\u30c3\u30c0\u30fcFrom\u3068\u6574\u5408\u305b\u305a\u3001<strong>SPF\u3067\u306f\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304c\u6210\u7acb\u3057\u307e\u305b\u3093<\/strong>\u3002\u4e00\u65b9\u3001DKIM\u3092\u4f5c\u6210\u8005\u7f72\u540d\uff08\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\uff09\u3067\u8a2d\u5b9a\u3059\u308c\u3070\u3001\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\uff08d=\uff09\u3068\u30d8\u30c3\u30c0\u30fcFrom\u304c\u4e00\u81f4\u3057\u3001\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304c\u6210\u7acb\u3057\u307e\u3059\u3002\u5148\u306bDKIM\u306e\u7ae0\u3067\u4f5c\u6210\u8005\u7f72\u540d\u3092\u63a8\u5968\u3057\u305f\u306e\u306f\u3001\u3053\u306e\u7406\u7531\u306b\u3088\u308a\u307e\u3059\u3002DMARC\u306f\u30ec\u30b3\u30fc\u30c9\u3092\u7f6e\u304f\u3060\u3051\u3067\u306a\u304f\u3001<strong>\u5b9f\u969b\u306bPASS\u3057\u3066\u3044\u308b\u304b\u3092\u30ec\u30dd\u30fc\u30c8\u3084\u30d8\u30c3\u30c0\u30fc\u3067\u5fc5\u305a\u78ba\u8a8d\u3059\u308b<\/strong>\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002<\/p>\n<h2>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u4ee5\u5916\u306b\u5bfe\u5fdc\u3059\u3079\u304d\u9805\u76ee<\/h2>\n<p>\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3067\u6c42\u3081\u3089\u308c\u308b\u306e\u306f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3060\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u9001\u4fe1\u30b5\u30fc\u30d0\u30fc\u3084\u30e1\u30fc\u30eb\u672c\u6587\u306b\u95a2\u308f\u308b\u9805\u76ee\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u6709\u52b9\u306a\u6b63\u5f15\u304d\u30fb\u9006\u5f15\u304dDNS\uff08PTR\u30ec\u30b3\u30fc\u30c9\uff09<\/h3>\n<p>\u3059\u3079\u3066\u306e\u9001\u4fe1\u8005\u306b\u6c42\u3081\u3089\u308c\u308b\u306e\u304c\u3001<strong>\u9001\u4fe1\u306b\u4f7f\u3046\u30b5\u30fc\u30d0\u30fc\u306eIP\u30a2\u30c9\u30ec\u30b9\u306b\u3001\u6709\u52b9\u306a\u6b63\u5f15\u304d\u30fb\u9006\u5f15\u304dDNS\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068<\/strong>\u3067\u3059\u3002\u3053\u308c\u306f\u300cFCrDNS\uff08Forward-Confirmed reverse DNS\uff09\u300d\u3068\u3082\u547c\u3070\u308c\u307e\u3059\u3002<\/p>\n<p>\u5177\u4f53\u7684\u306b\u306f\u3001\u6b21\u306e\u53cc\u65b9\u5411\u306e\u6574\u5408\u6027\u304c\u5fc5\u8981\u3067\u3059\u3002\u9001\u4fe1\u5143IP\u306e\u9006\u5f15\u304d\uff08PTR\u30ec\u30b3\u30fc\u30c9\uff09\u3067\u30db\u30b9\u30c8\u540d\u304c\u5f15\u3051\u3001\u305d\u306e\u30db\u30b9\u30c8\u540d\u306e\u6b63\u5f15\u304d\uff08A\uff0fAAAA\u30ec\u30b3\u30fc\u30c9\uff09\u3067\u5143\u306e\u540c\u3058IP\u306b\u623b\u308b\u3001\u3068\u3044\u3046\u72b6\u614b\u3067\u3059\u3002IP\u3068\u30db\u30b9\u30c8\u540d\u304c\u53cc\u65b9\u5411\u3067\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u3001\u6b63\u4f53\u4e0d\u660e\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u306e\u9001\u4fe1\u3067\u306f\u306a\u3044\u3001\u3068\u3044\u3046\u88cf\u3065\u3051\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u7559\u610f\u70b9\u3068\u3057\u3066\u3001PTR\u30ec\u30b3\u30fc\u30c9\u306f\u30c9\u30e1\u30a4\u30f3\u306eDNS\u3067\u306f\u306a\u304f\u3001<strong>\u305d\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u7ba1\u7406\u3059\u308b\u4e8b\u696d\u8005\uff08ISP\u3084\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306e\u30d9\u30f3\u30c0\u30fc\uff09\u5074<\/strong>\u3067\u8a2d\u5b9a\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u81ea\u793e\u30b5\u30fc\u30d0\u30fc\u3084\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u3067\u9001\u4fe1\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u7ba1\u7406\u8005\u306b\u3001\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u30d9\u30f3\u30c0\u30fc\u306b\u3001PTR\u304c\u9069\u5207\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002\u5171\u6709IP\u3067\u9001\u4fe1\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u9006\u5f15\u304d\u30db\u30b9\u30c8\u540d\u304c\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u3068\u4e00\u81f4\u3057\u306a\u3044\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u304c\u6c42\u3081\u308b\u306e\u306f\u3042\u304f\u307e\u3067\u53cc\u65b9\u5411\u306e\u6574\u5408\u3067\u3042\u308a\u3001\u30db\u30b9\u30c8\u540d\u3068\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u306e\u4e00\u81f4\u307e\u3067\u306f\u5fc5\u9808\u3068\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<h3>\u9001\u4fe1\u6642\u306eTLS\u63a5\u7d9a<\/h3>\n<p>SMTP\u306f\u6a19\u6e96\u3067\u306f\u5e73\u6587\u3067\u901a\u4fe1\u3055\u308c\u308b\u305f\u3081\u3001\u7d4c\u8def\u4e0a\u3067\u306e\u76d7\u8074\u3084\u6539\u3056\u3093\u306e\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u9632\u3050\u305f\u3081\u3001\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3067\u306f<strong>\u30e1\u30fc\u30eb\u9001\u4fe1\u6642\u306bTLS\u63a5\u7d9a\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068<\/strong>\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u5177\u4f53\u7684\u306b\u306f\u3001SMTP\u306e\u62e1\u5f35\u3067\u3042\u308bSTARTTLS\u306b\u3088\u3063\u3066\u901a\u4fe1\u3092\u6697\u53f7\u5316\u3057\u307e\u3059\u3002\u53d7\u4fe1\u5074\u30b5\u30fc\u30d0\u30fc\u304cTLS\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308c\u3070\u3001\u5e73\u6587\u304b\u3089\u6697\u53f7\u5316\u901a\u4fe1\u3078\u3068\u5207\u308a\u66ff\u3048\u3066\u3084\u308a\u53d6\u308a\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u5b89\u5168\u6027\u306e\u89b3\u70b9\u304b\u3089\u306f\u3001\u53e4\u3044\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u306f\u306a\u304fTLS 1.2\u4ee5\u964d\u3067\u306e\u901a\u4fe1\u304c\u671b\u307e\u308c\u307e\u3059\u3002<\/p>\n<p>TLS\u306b\u5bfe\u5fdc\u3057\u305f\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u5229\u7528\u3057\u3066\u3044\u308c\u3070\u3001\u904b\u7528\u4e0a\u610f\u8b58\u3059\u308b\u5fc5\u8981\u306f\u307b\u307c\u3042\u308a\u307e\u305b\u3093\u3002\u5c0e\u5165\u3092\u691c\u8a0e\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30b5\u30fc\u30d3\u30b9\u30b5\u30a4\u30c8\u3084\u88fd\u54c1\u8cc7\u6599\u3001\u554f\u3044\u5408\u308f\u305b\u7a93\u53e3\u3067TLS\u5bfe\u5fdc\u3092\u78ba\u8a8d\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u306a\u304a\u3001\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u306f\u5168\u30d7\u30e9\u30f3\u304cTLS\u63a5\u7d9a\u306b\u6a19\u6e96\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u3067\u306e\u767b\u9332\u89e3\u9664\uff08RFC 8058\uff09<\/h3>\n<p>1\u65e55,000\u901a\u4ee5\u4e0a\u3092\u9001\u4fe1\u3059\u308b\u9001\u4fe1\u8005\u306f\u3001\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30e1\u30fc\u30eb\u30fb\u914d\u4fe1\u767b\u9332\u30e1\u30fc\u30eb\u306b<strong>\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u3067\u306e\u767b\u9332\u89e3\u9664<\/strong>\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002Web\u30b5\u30a4\u30c8\u3078\u9077\u79fb\u3057\u3066\u304b\u3089\u306e\u64cd\u4f5c\u3067\u306f\u306a\u304f\u3001\u53d7\u4fe1\u8005\u304c\u30e1\u30fc\u30eb\u4e0a\u30671\u56de\u64cd\u4f5c\u3059\u308c\u3070\u3001\u305d\u308c\u3060\u3051\u3067\u89e3\u9664\u304c\u5b8c\u4e86\u3059\u308b\u3053\u3068\u304c\u6761\u4ef6\u3067\u3059\u3002<\/p>\n<p>\u6280\u8853\u7684\u306b\u306f\u3001\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u30fc\u306b\u6b21\u306e2\u3064\u3092\u4ed8\u4e0e\u3057\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>List-Unsubscribe\uff1a\u89e3\u9664\u7528\u306eURL\uff08\u304a\u3088\u3073mailto\uff09\u3092\u8a18\u8f09\u3059\u308b\u30d8\u30c3\u30c0\u30fc\uff08RFC 2369\uff09<\/li>\n<li>List-Unsubscribe-Post\uff1a\u5024\u306b\u300cList-Unsubscribe=One-Click\u300d\u3092\u6307\u5b9a\u3059\u308b\u30d8\u30c3\u30c0\u30fc\uff08RFC 8058\uff09<\/li>\n<\/ul>\n<\/div>\n<p>\u3053\u306e2\u3064\u304c\u305d\u308d\u3046\u3068\u3001\u53d7\u4fe1\u8005\u304c\u89e3\u9664\u3092\u5b9f\u884c\u3057\u305f\u969b\u3001\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u6307\u5b9a\u306eURL\u3078 <code>List-Unsubscribe=One-Click<\/code> \u3092\u542b\u3080POST\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u81ea\u52d5\u9001\u4fe1\u3057\u307e\u3059\u3002\u9001\u4fe1\u5074\u306f\u3001\u3053\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092HTTPS\u306e\u30b5\u30fc\u30d0\u30fc\u3067\u53d7\u3051\u53d6\u308a\u3001\u914d\u4fe1\u30ea\u30b9\u30c8\u3078\u78ba\u5b9f\u306b\u53cd\u6620\u3059\u308b\u4ed5\u7d44\u307f\u307e\u3067\u7528\u610f\u3057\u3066\u3001\u306f\u3058\u3081\u3066\u8981\u4ef6\u3092\u6e80\u305f\u3057\u307e\u3059\u3002\u672c\u6587\u306b\u89e3\u9664\u30ea\u30f3\u30af\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u8868\u793a\u3059\u308b\u3053\u3068\u3082\u3001\u3042\u308f\u305b\u3066\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u8a73\u3057\u3044\u8a2d\u5b9a\u65b9\u6cd5\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n  <div class=\"blogcard\">\n  <a href=\"\/blog\/mail-delivery\/onecrick-cancellation\">\n   <div class=\"blogcard_thumbnail\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2024\/04\/onecrick-Cancellation-1-1.png\" alt=\"\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u89e3\u9664\u306e\u5c0e\u5165\u306f\u5fc5\u9808\uff01Gmail\u9001\u4fe1\u8005\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u5bfe\u5fdc\u306e\u30dd\u30a4\u30f3\u30c8\" width=\"90\" height=\"51\" \/><\/div>\n   <div class=\"blogcard_content\">\n    <div class=\"blogcard_title\">\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u89e3\u9664\u306e\u5c0e\u5165\u306f\u5fc5\u9808\uff01Gmail\u9001\u4fe1\u8005\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u5bfe\u5fdc\u306e\u30dd\u30a4\u30f3\u30c8<\/div>\n    <div class=\"blogcard_excerpt\">Gmail\u306e\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u89e3\u9664\u3068\u306f\u3001\u30e1\u30fc\u30eb\u53d7\u4fe1\u8005\u306e\u540d\u524d\u306e\u6a2a\u306a\u3069\u306b\u8868\u793a\u3055\u308c\u308b\u300c\u30e1\u30fc\u30ea\u30f3\u30b0\u30ea\u30b9\u30c8\u306e\u767b\u9332\u89e3\u9664\u300d\u30ea\u30f3\u30af\u304b\u3089\u3001\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u3067\u30e1\u30eb\u30de\u30ac\u306e\u914d\u4fe1\u3092\u2026<\/div>\n   <\/div>\n   <div class=\"clear\"><\/div>\n  <\/a>\n  <\/div>\n<h3>\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u30920.10%\u672a\u6e80\u306b\u4fdd\u3064<\/h3>\n<p>\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306f\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u306b\u3064\u3044\u3066\u660e\u78ba\u306a\u6570\u5024\u57fa\u6e96\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u3053\u3067\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u3068\u306f\u3001\u914d\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u306e\u3046\u3061\u3001\u53d7\u4fe1\u8005\u304c\u300c\u8ff7\u60d1\u30e1\u30fc\u30eb\u3092\u5831\u544a\u300d\u3057\u305f\u30e1\u30fc\u30eb\u306e\u5272\u5408\u3092\u6307\u3057\u3001Postmaster Tools\u3067\u65e5\u6b21\u3067\u8a08\u6e2c\u3055\u308c\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u30920.10%\u672a\u6e80\u306b\u7dad\u6301\u3059\u308b\uff08\u63a8\u5968\uff09<\/li>\n<li>0.30%\u4ee5\u4e0a\u306b\u306f\u3057\u306a\u3044<\/li>\n<\/ul>\n<\/div>\n<p>0.30%\u306f1\u4e07\u901a\u3042\u305f\u308a30\u901a\u306b\u76f8\u5f53\u3057\u307e\u3059\u3002\u4e00\u6642\u7684\u306b\u6025\u4e0a\u6607\u3057\u305f\u3060\u3051\u3067\u3082\u5224\u5b9a\u306b\u5f71\u97ff\u3057\u3046\u308b\u305f\u3081\u3001\u5e73\u6642\u304b\u3089\u4f4e\u304f\u4fdd\u3064\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u3092\u6291\u3048\u308b\u306b\u306f\u3001\u30ea\u30b9\u30c8\u3068\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u54c1\u8cea\u7ba1\u7406\u304c\u91cd\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u9805\u76ee\u3092\u9075\u5b88\u3057\u3066\u904b\u7528\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>\u30aa\u30d7\u30c8\u30a4\u30f3\uff08\u540c\u610f\uff09\u3092\u53d6\u5f97\u3057\u305f\u30a2\u30c9\u30ec\u30b9\u306b\u306e\u307f\u914d\u4fe1\u3059\u308b<\/li>\n<li>\u914d\u4fe1\u89e3\u9664\u30d5\u30a9\u30fc\u30e0\u3092\u5fc5\u305a\u8a2d\u7f6e\u3057\u3001\u89e3\u9664\u3092\u5e0c\u671b\u3059\u308b\u53d7\u4fe1\u8005\u306b\u624b\u9593\u3092\u304b\u3051\u3055\u305b\u306a\u3044<\/li>\n<li>\u7f72\u540d\u306b\u9001\u4fe1\u8005\u60c5\u5831\u3068\u9023\u7d61\u5148\u3092\u660e\u8a18\u3059\u308b<\/li>\n<li>\u5b9a\u671f\u7684\u306b\u30ea\u30b9\u30c8\u30af\u30ea\u30fc\u30cb\u30f3\u30b0\u3092\u884c\u3044\u3001\u30a8\u30e9\u30fc\u30a2\u30c9\u30ec\u30b9\u3084\u7121\u53cd\u5fdc\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u9664\u5916\u3059\u308b<\/li>\n<li>\u53e4\u3044\u30ea\u30b9\u30c8\u3084\u8cfc\u5165\u30ea\u30b9\u30c8\u306f\u500b\u5225\u30b0\u30eb\u30fc\u30d7\u3067\u614e\u91cd\u306b\u6271\u3046<\/li>\n<\/ul>\n<\/div>\n<p>\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u306f\u9001\u4fe1\u8005\u5074\u306e\u7ba1\u7406\u753b\u9762\u304b\u3089\u306f\u898b\u3048\u306b\u304f\u3044\u6307\u6a19\u3067\u3059\u3002\u5f8c\u8ff0\u3059\u308bGoogle Postmaster Tools\u3067\u3001\u7d99\u7d9a\u7684\u306b\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u306e\u4f7f\u7528\u3068From\u507d\u88c5\u306e\u7981\u6b62<\/h3>\n<p>\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u306b\u306f<strong>\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u3092\u4f7f\u7528<\/strong>\u3057\u307e\u3059\u3002\u30d5\u30ea\u30fc\u30e1\u30fc\u30eb\uff08@gmail.com\u306a\u3069\uff09\u3092\u9001\u4fe1\u5143\u306b\u3057\u305f\u5927\u91cf\u914d\u4fe1\u306f\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u3092\u53d7\u3051\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u3067\u306a\u3051\u308c\u3070SPF\u30fbDKIM\u30fbDMARC\u3092\u81ea\u793e\u3067\u8a2d\u5b9a\u3067\u304d\u305a\u3001\u305d\u3082\u305d\u3082\u8a8d\u8a3c\u8981\u4ef6\u3092\u6e80\u305f\u305b\u307e\u305b\u3093\u3002<\/p>\n<p>\u3042\u308f\u305b\u3066\u3001\u30d8\u30c3\u30c0\u30fcFrom\u306b\u4ed6\u8005\u306e\u30c9\u30e1\u30a4\u30f3\u3001\u7279\u306bgmail.com\u3092\u88c5\u3046\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u306f\u7981\u6b62\u3055\u308c\u3066\u3044\u307e\u3059\u3002Gmail\u306f@gmail.com\u3092\u5dee\u51fa\u4eba\u306b\u507d\u88c5\u3057\u305f\u30e1\u30fc\u30eb\u306bDMARC\u306equarantine\u30dd\u30ea\u30b7\u30fc\u3092\u9069\u7528\u3059\u308b\u305f\u3081\u3001\u3053\u3046\u3057\u305f\u30e1\u30fc\u30eb\u306f\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5c4a\u304b\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u9001\u4fe1\u5143\u306b\u306f\u3001\u5fc5\u305a\u81ea\u793e\u304c\u7ba1\u7406\u3059\u308b\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u3092\u7528\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>\u5bfe\u5fdc\u72b6\u6cc1\u3092\u78ba\u8a8d\u3059\u308b3\u3064\u306e\u65b9\u6cd5<\/h2>\n<p>\u8a2d\u5b9a\u3057\u305f\u3064\u3082\u308a\u3067\u3082\u3001DNS\u306e\u8a18\u8ff0\u30df\u30b9\u3084\u53cd\u6620\u9045\u5ef6\u306b\u3088\u3063\u3066\u3001\u610f\u56f3\u305b\u305a\u672a\u5bfe\u5fdc\u306e\u307e\u307e\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u306f\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u81ea\u793e\u306e\u72b6\u6cc1\u3092\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5\u30923\u3064\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h3>1. \u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u30fc\u3067\u8a8d\u8a3c\u7d50\u679c\uff08PASS\uff0fFAIL\uff09\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n<p>\u6700\u3082\u624b\u8efd\u306a\u306e\u304c\u3001\u81ea\u5206\u5b9b\u3066\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3057\u3066\u8a8d\u8a3c\u7d50\u679c\u3092\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002Gmail\u3067\u53d7\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u3092\u958b\u304d\u3001\u53f3\u4e0a\u306e3\u70b9\u30dc\u30bf\u30f3\u304b\u3089\u300c\u539f\u6587\u3092\u8868\u793a\u300d\u3092\u9078\u3073\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2023\/11\/genbun.png\" alt=\"Gmail\u306e\u300c\u539f\u6587\u3092\u8868\u793a\u300d\" width=\"235\" height=\"463\" class=\"alignnone size-full wp-image-22372\" style=\"border: 1px solid #cccccc;\" \/><\/p>\n<p>\u8868\u793a\u3055\u308c\u305f\u753b\u9762\u3067\u3001SPF\u30fbDKIM\u30fbDMARC\u306e\u5404\u9805\u76ee\u306b\u300cPASS\u300d\u3068\u8868\u793a\u3055\u308c\u3066\u3044\u308c\u3070\u3001\u8a8d\u8a3c\u306f\u6b63\u3057\u304f\u6a5f\u80fd\u3057\u3066\u3044\u307e\u3059\u3002\u300cFAIL\u300d\u3067\u3042\u308c\u3070\u8a2d\u5b9a\u306b\u554f\u984c\u304c\u3042\u308b\u305f\u3081\u3001\u898b\u76f4\u3057\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2023\/11\/genbun2.png\" alt=\"Gmail\u306e\u539f\u6587\u78ba\u8a8d\u753b\u9762\" width=\"838\" height=\"357\" class=\"alignnone size-full wp-image-22373\" style=\"border: 1px solid #cccccc;\" \/><\/p>\n<h3>2. Google Postmaster Tools\u3067\u8a55\u4fa1\u3092\u53ef\u8996\u5316\u3059\u308b<\/h3>\n<p>\u7d99\u7d9a\u7684\u306a\u78ba\u8a8d\u624b\u6bb5\u3068\u3057\u3066\u6700\u3082\u91cd\u8981\u306a\u306e\u304c\u3001Google\u516c\u5f0f\u306e\u300cGoogle Postmaster Tools\u300d\u3067\u3059\u3002<\/p>\n<p>\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u3092\u767b\u9332\u3059\u308b\u3068\u3001Gmail\u5b9b\u3066\u9001\u4fe1\u306e<strong>\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u30fb\u30c9\u30e1\u30a4\u30f3\u3084IP\u306e\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u30fb\u8a8d\u8a3c\u306e\u6210\u529f\u7387<\/strong>\u306a\u3069\u3092\u53ef\u8996\u5316\u3067\u304d\u307e\u3059\u3002\u9001\u4fe1\u8005\u5074\u306e\u7ba1\u7406\u753b\u9762\u3067\u306f\u53d6\u5f97\u3067\u304d\u306a\u3044\u30c7\u30fc\u30bf\u3092\u5ba2\u89b3\u7684\u306a\u6570\u5024\u3067\u628a\u63e1\u3067\u304d\u308b\u305f\u3081\u3001\u7279\u306b\u5927\u91cf\u914d\u4fe1\u3092\u884c\u3046\u9001\u4fe1\u8005\u306b\u306f\u6b20\u304b\u305b\u307e\u305b\u3093\u3002\u4f7f\u3044\u65b9\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n  <div class=\"blogcard\">\n  <a href=\"\/blog\/mail-delivery\/howto-postmastertools\">\n   <div class=\"blogcard_thumbnail\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2024\/02\/howto-postmastertools.png\" alt=\"Google Postmaster Tools\u3068\u306f\uff1f\u30102026\u5e74\u6700\u65b0\u3011Gmail\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u306e\u78ba\u8a8d\u30fb\u767b\u9332\u65b9\u6cd5\u3092\u5168\u89e3\u8aac\" width=\"90\" height=\"51\" \/><\/div>\n   <div class=\"blogcard_content\">\n    <div class=\"blogcard_title\">Google Postmaster Tools\u3068\u306f\uff1f\u30102026\u5e74\u6700\u65b0\u3011Gmail\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u306e\u78ba\u8a8d\u30fb\u767b\u9332\u65b9\u6cd5\u3092\u5168\u89e3\u8aac<\/div>\n    <div class=\"blogcard_excerpt\">Google Postmaster Tools\uff08\u30dd\u30b9\u30c8\u30de\u30b9\u30bf\u30fc\u30c4\u30fc\u30eb\uff09\u306f\u3001Google\u304c\u63d0\u4f9b\u3059\u308b\u516c\u5f0f\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u30c4\u30fc\u30eb\u3067\u3059\u3002 202\u2026<\/div>\n   <\/div>\n   <div class=\"clear\"><\/div>\n  <\/a>\n  <\/div>\n<h3>3. \u5c02\u7528\u30c4\u30fc\u30eb\u3067DNS\u30ec\u30b3\u30fc\u30c9\u3092\u8a3a\u65ad\u3059\u308b<\/h3>\n<p>SPF\u30fbDKIM\u30fbDMARC\u306e\u5404\u30ec\u30b3\u30fc\u30c9\u304c\u6b63\u3057\u304f\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u304b\u306f\u3001\u5c02\u7528\u30c4\u30fc\u30eb\u3067\u8a3a\u65ad\u3067\u304d\u307e\u3059\u3002nslookup\u3084dig\u3067\u30ec\u30b3\u30fc\u30c9\u3092\u76f4\u63a5\u5f15\u304f\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u304c\u3001Web\u4e0a\u306e\u7121\u6599\u8a3a\u65ad\u30c4\u30fc\u30eb\u3092\u4f7f\u3048\u3070\u3001\u69cb\u6587\u30a8\u30e9\u30fc\u3084\u516c\u958b\u9375\u306e\u53d6\u5f97\u53ef\u5426\u3001DMARC\u30dd\u30ea\u30b7\u30fc\u306e\u5185\u5bb9\u3092\u624b\u65e9\u304f\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30a8\u30e9\u30fc\u304c\u51fa\u308b\u5834\u5408\u306fDNS\u8a2d\u5b9a\u305d\u306e\u3082\u306e\u306b\u8aa4\u308a\u304c\u3042\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u305f\u3081\u3001\u65e9\u6025\u306b\u4fee\u6b63\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>Gmail\u4ee5\u5916\uff08Yahoo!\u30fbMicrosoft\uff09\u3082\u540c\u69d8\u306e\u52d5\u304d<\/h2>\n<p>\u540c\u69d8\u306e\u8981\u4ef6\u306f\u3001Gmail\u3060\u3051\u306b\u3068\u3069\u307e\u308a\u307e\u305b\u3093\u3002\u4e3b\u8981\u306a\u30e1\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u304c\u8db3\u4e26\u307f\u3092\u305d\u308d\u3048\u3066\u3044\u307e\u3059\u3002\u6c42\u3081\u3089\u308c\u308b\u5185\u5bb9\u306e\u4e2d\u6838\u306f\u3044\u305a\u308c\u3082Gmail\u3068\u5171\u901a\u306e\u305f\u3081\u3001<strong>Gmail\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5bfe\u5fdc\u3057\u3066\u304a\u3051\u3070\u3001\u4ed6\u793e\u306e\u8981\u4ef6\u3082\u5b9f\u8cea\u7684\u306b\u30ab\u30d0\u30fc\u3067\u304d\u308b<\/strong>\u72b6\u614b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>Yahoo\u306e\u52d5\u304d<\/h3>\n<p>\u7c73\u56fdYahoo!\uff08@yahoo.com\uff09\u306f\u3001Gmail\u3068\u307b\u307c\u540c\u6642\u671f\u306b\u3001\u540c\u7b49\u306e\u9001\u4fe1\u8005\u8981\u4ef6\u3092\u65bd\u884c\u3057\u307e\u3057\u305f\u3002SPF\u30fbDKIM\u30fbDMARC\u306e\u8a2d\u5b9a\u3084\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u89e3\u9664\u306a\u3069\u3001\u5185\u5bb9\u306fGmail\u3068\u8db3\u4e26\u307f\u304c\u305d\u308d\u3063\u3066\u3044\u307e\u3059\u3002\u7c73\u56fd\u306e\u30e6\u30fc\u30b6\u30fc\u3078\u914d\u4fe1\u3059\u308b\u5834\u5408\u306f\u3001\u76f4\u63a5\u306e\u5bfe\u5fdc\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p>\u56fd\u5185\u306eYahoo! JAPAN\uff08LINE\u30e4\u30d5\u30fc\uff09\u306f\u3001Gmail\u306e\u3088\u3046\u306a\u300c1\u65e55,000\u901a\u300d\u3068\u3044\u3046\u660e\u78ba\u306a\u901a\u6570\u57fa\u6e96\u306f\u516c\u958b\u3057\u3066\u3044\u307e\u305b\u3093\u3002\u305f\u3060\u3057\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u91cd\u8996\u3059\u308b\u59ff\u52e2\u3092\u793a\u3057\u3066\u304a\u308a\u3001<strong>SPF\u30fbDKIM\u30fbDMARC\u306e\u3044\u305a\u308c\u3082\u6e80\u305f\u3055\u306a\u3044\u30e1\u30fc\u30eb\u306f\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u3084\u53d7\u4fe1\u62d2\u5426\u306e\u5bfe\u8c61\u3068\u306a\u308b<\/strong>\u65b9\u91dd\u3092\u6848\u5185\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>Microsoft\u306e\u52d5\u304d<\/h3>\n<p>Microsoft\u306f\u3001Outlook.com\u30fbHotmail.com\u30fbLive.com\u5b9b\u3066\u306e\u5927\u91cf\u9001\u4fe1\u8005\u5411\u3051\u306b\u65b0\u8981\u4ef6\u3092\u767a\u8868\u3057\u3001<strong>2025\u5e745\u67085\u65e5\u304b\u3089\u6b63\u5f0f\u306b\u9069\u7528<\/strong>\u3092\u958b\u59cb\u3057\u307e\u3057\u305f\u3002\u5bfe\u8c61\u306f\u3001\u3053\u308c\u3089\u306e\u30c9\u30e1\u30a4\u30f3\u5b9b\u3066\u306b1\u65e55,000\u901a\u4ee5\u4e0a\u3092\u9001\u4fe1\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u3067\u3059\u3002<\/p>\n<p>\u8981\u4ef6\u306e\u4e2d\u6838\u306fGmail\u3068\u307b\u307c\u540c\u4e00\u3067\u3001SPF\u30fbDKIM\u30fbDMARC\u306e3\u70b9\u8a8d\u8a3c\u304c\u5fc5\u9808\u3067\u3059\u3002\u975e\u6e96\u62e0\u306e\u30e1\u30fc\u30eb\u306f\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u3001\u5c06\u6765\u7684\u306b\u306f\u53d7\u4fe1\u62d2\u5426\u3078\u79fb\u884c\u3059\u308b\u65b9\u91dd\u3082\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u52a0\u3048\u3066Microsoft\u306f\u3001\u30d8\u30c3\u30c0\u30fcFrom\u3084Reply-To\u306b\u5b9f\u5728\u3059\u308b\u30a2\u30c9\u30ec\u30b9\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3082\u63a8\u5968\u3057\u3066\u304a\u308a\u3001\u904b\u7528\u9762\u306e\u898b\u76f4\u3057\u3082\u3042\u308f\u305b\u3066\u9032\u3081\u308b\u306e\u304c\u671b\u307e\u3057\u3044\u5bfe\u5fdc\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u3010\u6642\u7cfb\u5217\u3067\u6574\u7406\u3011\u3053\u308c\u307e\u3067\u306e\u7d4c\u7def\u3068\u73fe\u5728\u5730<\/h2>\n<p>Gmail\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306f\u4e00\u5ea6\u306e\u767a\u8868\u3067\u5b8c\u7d50\u3057\u305f\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u6bb5\u968e\u7684\u306b\u5f37\u5316\u3055\u308c\u3066\u304d\u307e\u3057\u305f\u3002\u73fe\u5728\u5730\u3092\u6b63\u78ba\u306b\u3064\u304b\u3080\u305f\u3081\u306b\u3001\u3053\u308c\u307e\u3067\u306e\u7d4c\u7def\u3092\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n<h3>2024\u5e742\u6708\uff1a\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u9069\u7528\u958b\u59cb<\/h3>\n<p>2024\u5e742\u67081\u65e5\u3001\u3059\u3079\u3066\u306e\u9001\u4fe1\u8005\u3092\u5bfe\u8c61\u306b\u9069\u7528\u304c\u59cb\u307e\u308a\u307e\u3057\u305f\u3002\u3053\u306e\u6642\u70b9\u3067\u306f\u3001\u8981\u4ef6\u3092\u6e80\u305f\u3055\u306a\u3044\u30e1\u30fc\u30eb\u306f\u300c\u60f3\u5b9a\u3069\u304a\u308a\u306b\u914d\u4fe1\u3055\u308c\u306a\u3044\u3053\u3068\u304c\u3042\u308b\u300d\u3068\u3044\u3046\u6bb5\u968e\u3067\u3001\u5b9f\u8cea\u7684\u306a\u7336\u4e88\u671f\u9593\u306b\u8fd1\u3044\u904b\u7528\u3067\u3057\u305f\u3002<\/p>\n<h3>2024\u5e746\u6708\uff1a\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u89e3\u9664\u306e\u7fa9\u52d9\u5316<\/h3>\n<p>2024\u5e746\u67081\u65e5\u304b\u3089\u306f\u30011\u65e55,000\u901a\u4ee5\u4e0a\u3092\u9001\u4fe1\u3059\u308b\u9001\u4fe1\u8005\u306b\u5bfe\u3057\u3001<strong>\u3059\u3079\u3066\u306e\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30e1\u30fc\u30eb\u30fb\u914d\u4fe1\u767b\u9332\u30e1\u30fc\u30eb\u306b\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u3067\u306e\u767b\u9332\u89e3\u9664\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068<\/strong>\u304c\u6c42\u3081\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u306e\u9803\u304b\u3089\u3001\u8981\u4ef6\u3092\u6e80\u305f\u3055\u306a\u3044\u30e1\u30fc\u30eb\u306eGmail\u5b9b\u3066\u914d\u9001\u304c\u5b9f\u969b\u306b\u5931\u6557\u3059\u308b\u30b1\u30fc\u30b9\u304c\u76ee\u7acb\u3061\u59cb\u3081\u307e\u3059\u3002<\/p>\n<h3>2025\u5e7411\u6708\uff1a\u672a\u5bfe\u5fdc\u30e1\u30fc\u30eb\u306f\u300c\u62d2\u5426\u300d\u306e\u5bfe\u8c61\u3078<\/h3>\n<p>2025\u5e7411\u6708\u3001Google\u306f\u975e\u6e96\u62e0\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3078\u306e\u63aa\u7f6e\u3092\u5f37\u5316\u3059\u308b\u65b9\u91dd\u3092\u767a\u8868\u3057\u307e\u3057\u305f\u3002\u516c\u5f0fFAQ\u306b\u306f\u3001\u8981\u4ef6\u3092\u6e80\u305f\u3055\u306a\u3044\u30e1\u30fc\u30eb\u306b\u3064\u3044\u3066\u6b21\u306e\u3088\u3046\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>\u914d\u4fe1\u306e\u4e2d\u65ad\u3001\u4e00\u6642\u7684\u306a\u62d2\u5426\u3001\u307e\u305f\u306f\u6c38\u7d9a\u7684\u306a\u62d2\u5426\u306e\u5bfe\u8c61\u3068\u306a\u308b<\/li>\n<\/ul>\n<\/div>\n<p>\u5f93\u6765\u306e\u300c\u5c4a\u304f\u304b\u3069\u3046\u304b\u306f\u72b6\u6cc1\u6b21\u7b2c\u300d\u3068\u3044\u3046\u6bb5\u968e\u304b\u3089\u3001<strong>\u300c\u8981\u4ef6\u3092\u6e80\u305f\u3055\u306a\u3051\u308c\u3070\u62d2\u5426\u3055\u308c\u308b\u300d<\/strong>\u6bb5\u968e\u3078\u3068\u79fb\u884c\u3057\u307e\u3057\u305f\u3002\u8a8d\u8a3c\u3055\u308c\u3066\u3044\u306a\u3044\u30e1\u30fc\u30eb\u304c\u300c5.7.26\u300d\u30a8\u30e9\u30fc\u3067\u62d2\u5426\u3055\u308c\u308b\u30b1\u30fc\u30b9\u3082\u5831\u544a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u9867\u5ba2\u3084\u53d6\u5f15\u5148\u304c\u500b\u4eba\u7528Gmail\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u30e1\u30fc\u30eb\u306e\u4e0d\u9054\u306f\u305d\u306e\u307e\u307e\u6a5f\u4f1a\u640d\u5931\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002<\/p>\n<p><strong>\u53c2\u7167\u5143\uff1a<a href=\"https:\/\/support.google.com\/a\/answer\/14229414\" target=\"_blank\" rel=\"noopener\">\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u95a2\u3059\u308b\u3088\u304f\u3042\u308b\u8cea\u554f<\/a>\uff082026\u5e746\u6708\u78ba\u8a8d\uff09<\/strong><\/p>\n<h2>Gmail\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u5bfe\u5fdc\u3092\u78ba\u5b9f\u306b\u3059\u308b\u306a\u3089\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u6d3b\u7528\u3059\u308b<\/h2>\n<p>\u3053\u3053\u307e\u3067\u898b\u3066\u304d\u305f\u3068\u304a\u308a\u3001\u5bfe\u5fdc\u3059\u3079\u304d\u8981\u4ef6\u306f\u8a8d\u8a3c\u30fbDNS\u30fb\u89e3\u9664\u30fb\u904b\u7528\u3068\u591a\u5c90\u306b\u308f\u305f\u308a\u3001\u6280\u8853\u7684\u306a\u8a2d\u5b9a\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5bfe\u5fdc\u6e08\u307f\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u6d3b\u7528\u3059\u308c\u3070\u3001\u3053\u3046\u3057\u305f\u8981\u4ef6\u306e\u591a\u304f\u3092\u6a19\u6e96\u6a5f\u80fd\u3068\u3057\u3066\u6e80\u305f\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u4f7f\u3046\u30e1\u30ea\u30c3\u30c8<\/h3>\n<p>\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u5229\u7528\u3059\u308c\u3070\u3001\u5c02\u9580\u77e5\u8b58\u304c\u306a\u304f\u3066\u3082\u8981\u4ef6\u306e\u591a\u304f\u3092\u30af\u30ea\u30a2\u3067\u304d\u307e\u3059\u3002\u4e3b\u306a\u30e1\u30ea\u30c3\u30c8\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>SPF\u30fbDKIM\u30fbDMARC\u306e\u8a2d\u5b9a\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3001\u8a8d\u8a3c\u306e\u69cb\u6210\u3092\u6574\u3048\u3089\u308c\u308b<\/li>\n<li>TLS\u63a5\u7d9a\u3084\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u89e3\u9664\uff08List-Unsubscribe\u30d8\u30c3\u30c0\u30fc\uff09\u304c\u6a19\u6e96\u3067\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b<\/li>\n<li>\u958b\u5c01\u7387\u3084\u30a8\u30e9\u30fc\u7387\u3092\u53ef\u8996\u5316\u3067\u304d\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u306e\u6291\u5236\u3084\u30ea\u30b9\u30c8\u30af\u30ea\u30fc\u30cb\u30f3\u30b0\u306b\u5f79\u7acb\u3064<\/li>\n<\/ul>\n<\/div>\n<h3>\u304a\u3059\u3059\u3081\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u300c\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u300d<\/h3>\n<p><a href=\"https:\/\/blastmail.jp\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2024\/07\/blastmail-top.jpg\" alt=\"\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u306e\u30ad\u30e3\u30c3\u30c1\u753b\u50cf\" width=\"1200\" height=\"630\" class=\"alignnone wp-image-15955 size-full\" \/><\/a><\/p>\n<p>\u30e1\u30eb\u30de\u30ac\u914d\u4fe1\u3084\u4e00\u6589\u9001\u4fe1\u3067\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5bfe\u5fdc\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u300c\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\uff08blastmail\uff09\u300d\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u306f15\u5e74\u9023\u7d9a\u3067\u5c0e\u5165\u793e\u6570\u30b7\u30a7\u30a2No.1\u3092\u7372\u5f97\u3057\u3066\u304a\u308a\u300127,000\u793e\u4ee5\u4e0a\u306e\u5c0e\u5165\u5b9f\u7e3e\u3092\u6301\u3064\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3067\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\uff1aSPF\u30fbDKIM\u30fbDMARC\u306e\u8a2d\u5b9a\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3001\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u306b\u5bfe\u5fdc<\/li>\n<li>\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u89e3\u9664\uff1a\u767b\u9332\u89e3\u9664\u30ea\u30f3\u30af\u3092\u30e1\u30fc\u30eb\u306b\u7c21\u5358\u306b\u633f\u5165\u3067\u304d\u3001\u8981\u4ef6\u3092\u6e80\u305f\u305b\u308b<\/li>\n<li>TLS\u63a5\u7d9a\uff1a\u5168\u30d7\u30e9\u30f3\u3067\u6a19\u6e96\u5bfe\u5fdc\uff08\u8ffd\u52a0\u6599\u91d1\u306a\u3057\uff09<\/li>\n<li>\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u306e\u7121\u6599\u8cb8\u3057\u51fa\u3057\uff1a\u30d5\u30ea\u30fc\u30e1\u30fc\u30eb\u3057\u304b\u6301\u305f\u306a\u3044\u5834\u5408\u3067\u3082\u3001\u914d\u4fe1\u7528\u306e\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u3092\u3059\u3050\u306b\u7528\u610f\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/div>\n<p>\u5c02\u9580\u77e5\u8b58\u304c\u306a\u304f\u3066\u3082\u76f4\u611f\u7684\u306b\u64cd\u4f5c\u3067\u304d\u308b\u305f\u3081\u3001\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u62c5\u5f53\u8005\u3084\u5e83\u5831\u62c5\u5f53\u8005\u3067\u3082\u5b89\u5fc3\u3057\u3066\u904b\u7528\u3067\u304d\u307e\u3059\u3002\u7121\u6599\u30c8\u30e9\u30a4\u30a2\u30eb\u3082\u7528\u610f\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u307e\u305a\u306f\u5b9f\u969b\u306e\u4f7f\u3044\u5fc3\u5730\u3092\u8a66\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u516c\u5f0f\u30b5\u30a4\u30c8\uff1a<strong><a href=\"https:\/\/blastmail.jp\/\" target=\"_blank\" rel=\"noopener\">\u30b7\u30a7\u30a21\u4f4d\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u300c\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u300d<\/a><\/strong><\/p>\n<div class=\"su-button-center\"><a href=\"https:\/\/blastmail.jp\/\" class=\"su-button su-button-style-flat event_bnr\" style=\"color:#FFFFFF;background-color:#c12620;border-color:#9b1f1a;border-radius:5px\" target=\"_self\"><span style=\"color:#FFFFFF;padding:0px 34px;font-size:25px;line-height:50px;border-color:#d46863;border-radius:5px;text-shadow:none\"> \u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u3092\u7121\u6599\u3067\u8a66\u3059 &gt;<\/span><\/a><\/div>\n<h3>\u304a\u3059\u3059\u3081\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u300cblastengine\u300d<\/h3>\n<p><a href=\"https:\/\/blastengine.jp\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2025\/10\/blastengine.jpg\" alt=\"blastengine\u306e\u30a2\u30a4\u30ad\u30e3\u30c3\u30c1\u753b\u50cf\" width=\"1303\" height=\"590\" class=\"alignnone wp-image-19575 size-full\" \/><\/a><\/p>\n<p>\u81ea\u793e\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u306e\u81ea\u52d5\u901a\u77e5\u30e1\u30fc\u30eb\uff08\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30e1\u30fc\u30eb\uff09\u3084\u3001SMTP\u30ea\u30ec\u30fc\u30fbAPI\u3067\u306e\u9001\u4fe1\u304c\u4e2d\u5fc3\u306a\u3089\u3001\u300cblastengine\uff08\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\uff09\u300d\u304c\u6700\u9069\u3067\u3059\u3002\u81ea\u793e\u30b7\u30b9\u30c6\u30e0\u3068SMTP\u30ea\u30ec\u30fc\u3084API\u3067\u9023\u643a\u3059\u308b\u3053\u3068\u3067\u3001\u5927\u91cf\u914d\u4fe1\u3082\u9ad8\u901f\u304b\u3064\u78ba\u5b9f\u306b\u884c\u3048\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li>SPF\u30fbDKIM\u30fbDMARC\u5bfe\u5fdc\uff1a\u6700\u65b0\u306e\u30e1\u30fc\u30eb\u8a8d\u8a3c\u6280\u8853\u306b\u6a19\u6e96\u5bfe\u5fdc\u3057\u3001\u306a\u308a\u3059\u307e\u3057\u30fb\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u3092\u56de\u907f<\/li>\n<li>API\u9023\u643a\u30fbSMTP\u30ea\u30ec\u30fc\uff1a\u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\u3078\u306e\u7d44\u307f\u8fbc\u307f\u304c\u5bb9\u6613\u3067\u3001\u6700\u77ed\u5f53\u65e5\u304b\u3089\u5229\u7528\u958b\u59cb\u53ef\u80fd<\/li>\n<li>99%\u4ee5\u4e0a\u306e\u9ad8\u3044\u5230\u9054\u7387\uff1a\u56fd\u5185\u30ad\u30e3\u30ea\u30a2\u30fbISP\u3078\u306e\u500b\u5225\u9001\u4fe1\u30ed\u30b8\u30c3\u30af\u3067\u78ba\u5b9f\u306b\u5c4a\u3051\u308b<\/li>\n<li>IP\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u7ba1\u7406\uff1a\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u5074\u3067\u904b\u7528\u3059\u308b\u305f\u3081\u3001\u5e38\u306b\u9ad8\u3044\u9001\u4fe1\u8005\u8a55\u4fa1\u3092\u7dad\u6301<\/li>\n<\/ul>\n<\/div>\n<p>\u904b\u7528\u30fb\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306f\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u5074\u304c\u62c5\u3046\u305f\u3081\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u7ba1\u7406\u306e\u8ca0\u8377\u304b\u3089\u89e3\u653e\u3057\u307e\u3059\u3002\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3078\u306e\u6280\u8853\u7684\u306a\u5bfe\u5fdc\u3082\u4e07\u5168\u3067\u3001\u30b7\u30b9\u30c6\u30e0\u9023\u643a\u306b\u3088\u308b\u78ba\u5b9f\u306a\u30e1\u30fc\u30eb\u914d\u4fe1\u74b0\u5883\u3092\u69cb\u7bc9\u3057\u305f\u3044\u4f01\u696d\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u516c\u5f0f\u30b5\u30a4\u30c8\uff1a<strong><a href=\"https:\/\/blastengine.jp\/\" target=\"_blank\" rel=\"noopener\">https:\/\/blastengine.jp\/<\/a><\/strong><\/p>\n<div class=\"su-button-center\"><a href=\"https:\/\/app.engn.jp\/be\/order\/request-form\" class=\"su-button su-button-style-flat event_bnr\" style=\"color:#FFFFFF;background-color:#c12620;border-color:#9b1f1a;border-radius:5px\" target=\"_self\"><span style=\"color:#FFFFFF;padding:0px 34px;font-size:25px;line-height:50px;border-color:#d46863;border-radius:5px;text-shadow:none\"> \u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u3092\u7121\u6599\u3067\u8a66\u3059 &gt;<\/span><\/a><\/div>\n<h2>Gmail\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u95a2\u3059\u308b\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<div class=\"blog-faq\"><h2 class=\"blog-faq__title\">FAQ<\/h2><dl class=\"blog-faq__list\">\n<dt class=\"blog-faq__question\">Q\uff1aGmail\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306f\u8ab0\u304c\u5bfe\u8c61\u306b\u306a\u308a\u307e\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u500b\u4eba\u7528Gmail\u30a2\u30ab\u30a6\u30f3\u30c8\uff08@gmail.com\uff0f@googlemail.com\uff09\u5b9b\u3066\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b<strong>\u3059\u3079\u3066\u306e\u9001\u4fe1\u8005<\/strong>\u304c\u5bfe\u8c61\u3067\u3059\u3002\u7279\u306b1\u65e55,000\u901a\u8fd1\u304f\u4ee5\u4e0a\u3092\u9001\u4fe1\u3059\u308b\u5834\u5408\u306f\u3001SPF\u30fbDKIM\u30fbDMARC\u306e3\u70b9\u3059\u3079\u3066\u306e\u8a2d\u5b9a\u304c\u5fc5\u9808\u3068\u306a\u308b\u306a\u3069\u3001\u8981\u4ef6\u304c\u53b3\u683c\u306b\u306a\u308a\u307e\u3059\u3002\u6cd5\u4eba\u5411\u3051\u306eGoogle Workspace\u30a2\u30ab\u30a6\u30f3\u30c8\u5b9b\u3066\u306f\u3001\u73fe\u6642\u70b9\u3067\u306f\u5bfe\u8c61\u5916\u3067\u3059\u3002<\/dd>\n<dt class=\"blog-faq__question\">Q\uff1a1\u65e5\u306e\u9001\u4fe1\u6570\u304c5,000\u901a\u672a\u6e80\u306a\u3089\u5bfe\u5fdc\u306f\u4e0d\u8981\u3067\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u3044\u3044\u3048\u30025,000\u901a\u672a\u6e80\u3067\u3082<strong>SPF\u307e\u305f\u306fDKIM\u306e\u3044\u305a\u308c\u304b\u306e\u8a2d\u5b9a\u306f\u5fc5\u9808<\/strong>\u3067\u3059\u3002PTR\u30ec\u30b3\u30fc\u30c9\u3084TLS\u63a5\u7d9a\u3082\u5168\u9001\u4fe1\u8005\u306e\u8981\u4ef6\u306b\u3042\u305f\u308a\u307e\u3059\u3002\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u306e\u89b3\u70b9\u304b\u3089\u3082\u3001SPF\u30fbDKIM\u30fbDMARC\u3092\u3059\u3079\u3066\u8a2d\u5b9a\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002<\/dd>\n<dt class=\"blog-faq__question\">Q\uff1a\u5bfe\u5fdc\u3057\u306a\u304b\u3063\u305f\u5834\u5408\u3001\u3069\u3046\u306a\u308a\u307e\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u8981\u4ef6\u3092\u6e80\u305f\u3055\u306a\u3044\u30e1\u30fc\u30eb\u306f\u8ff7\u60d1\u30e1\u30fc\u30eb\u306b\u5206\u985e\u3055\u308c\u305f\u308a\u3001\u914d\u4fe1\u304c\u4e2d\u65ad\u30fb\u62d2\u5426\u3055\u308c\u305f\u308a\u3057\u307e\u3059\u3002<strong>2025\u5e7411\u6708\u4ee5\u964d\u306f\u63aa\u7f6e\u304c\u5f37\u5316\u3055\u308c\u3001\u4e00\u6642\u7684\u30fb\u6c38\u7d9a\u7684\u306a\u62d2\u5426\u306e\u5bfe\u8c61<\/strong>\u3068\u306a\u308b\u305f\u3081\u3001Gmail\u3078\u78ba\u5b9f\u306b\u5c4a\u3051\u308b\u306b\u306f\u5bfe\u5fdc\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/dd>\n<dt class=\"blog-faq__question\">Q\uff1aDMARC\u306e\u30dd\u30ea\u30b7\u30fc\u306fnone\u306e\u307e\u307e\u3067\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u8981\u4ef6\u3068\u3057\u3066\u306f<strong>none\u306e\u307e\u307e\u3067\u3082\u6e80\u305f\u305b\u307e\u3059<\/strong>\u3002\u305f\u3060\u3057none\u306f\u76e3\u8996\u306e\u307f\u3067\u3001\u306a\u308a\u3059\u307e\u3057\u3092\u6b62\u3081\u308b\u52b9\u679c\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u307e\u305a\u306fnone\u3067\u5c0e\u5165\u3057\u3001DMARC\u30ec\u30dd\u30fc\u30c8\u3067\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306e\u4e0d\u6b63\u5229\u7528\u3092\u78ba\u8a8d\u3057\u306a\u304c\u3089\u3001quarantine\u30fbreject\u3078\u6bb5\u968e\u7684\u306b\u5f37\u5316\u3059\u308b\u306e\u304c\u5b89\u5168\u3067\u3059\u3002<\/dd>\n<dt class=\"blog-faq__question\">Q\uff1aDMARC\u3092\u8a2d\u5b9a\u3057\u305f\u306e\u306b\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u307e\u3059\u3002\u306a\u305c\u3067\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a<strong>DMARC\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304c\u53d6\u308c\u3066\u3044\u306a\u3044<\/strong>\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3067\u3059\u3002\u30d8\u30c3\u30c0\u30fcFrom\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u3001SPF\uff08\u30a8\u30f3\u30d9\u30ed\u30fc\u30d7From\uff09\u307e\u305f\u306fDKIM\uff08\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\uff09\u306e\u8a8d\u8a3c\u30c9\u30e1\u30a4\u30f3\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u5229\u7528\u6642\u306fSPF\u5074\u304c\u30d9\u30f3\u30c0\u30fc\u30c9\u30e1\u30a4\u30f3\u306b\u306a\u308a\u3084\u3059\u3044\u305f\u3081\u3001DKIM\u3092\u4f5c\u6210\u8005\u7f72\u540d\uff08\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\uff09\u3067\u8a2d\u5b9a\u3059\u308b\u3068\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u6e80\u305f\u305b\u307e\u3059\u3002<\/dd>\n<\/dl><\/div>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>Gmail\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306f\u30012024\u5e742\u6708\u306e\u9069\u7528\u958b\u59cb\u304b\u3089\u6bb5\u968e\u7684\u306b\u5f37\u5316\u3055\u308c\u30012025\u5e7411\u6708\u4ee5\u964d\u306f<strong>\u8981\u4ef6\u3092\u6e80\u305f\u3055\u306a\u3044\u30e1\u30fc\u30eb\u304c\u62d2\u5426\u3055\u308c\u308b<\/strong>\u6bb5\u968e\u306b\u5165\u308a\u307e\u3057\u305f\u3002Gmail\u3078\u78ba\u5b9f\u306b\u30e1\u30fc\u30eb\u3092\u5c4a\u3051\u308b\u3046\u3048\u3067\u3001\u5bfe\u5fdc\u306f\u3082\u306f\u3084\u524d\u63d0\u6761\u4ef6\u3067\u3059\u3002<\/p>\n<p>\u5bfe\u5fdc\u306e\u67f1\u306f\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u306e\u8a2d\u5b9a\u3068\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u306e\u78ba\u4fdd\u3001PTR\u30ec\u30b3\u30fc\u30c9\u3068TLS\u63a5\u7d9a\u306e\u6574\u5099\u3001\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u89e3\u9664\u306e\u5b9f\u88c5\u3001\u305d\u3057\u3066\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u30920.10%\u672a\u6e80\u306b\u4fdd\u3064\u3053\u3068\u3067\u3059\u30021\u65e55,000\u901a\u8fd1\u304f\u4ee5\u4e0a\u3092\u9001\u308b\u9001\u4fe1\u8005\u306f\u3001\u7279\u306b3\u70b9\u8a8d\u8a3c\u3068\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u89e3\u9664\u304c\u5fc5\u9808\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u3092\u81ea\u524d\u3067\u6f0f\u308c\u306a\u304f\u6e80\u305f\u3057\u3001\u7dad\u6301\u3057\u7d9a\u3051\u308b\u306e\u306f\u5bb9\u6613\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5bfe\u5fdc\u6e08\u307f\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u6d3b\u7528\u3059\u308c\u3070\u3001\u78ba\u5b9f\u304b\u3064\u52b9\u7387\u7684\u306b\u300c\u5c4a\u304f\u30e1\u30fc\u30eb\u300d\u306e\u74b0\u5883\u3092\u6574\u3048\u3089\u308c\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3092\u624b\u304c\u304b\u308a\u306b\u3001\u307e\u305a\u306f\u81ea\u793e\u306e\u5bfe\u5fdc\u72b6\u6cc1\u3092\u70b9\u691c\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><a href=\"https:\/\/blastmail.jp\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2023\/01\/bm_banner_big_mailsystem_1200x628.png\" alt=\"blastmail\u306e\u30d0\u30ca\u30fc\" width=\"1200\" height=\"629\" class=\"alignnone wp-image-19829 size-full\" 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