{"id":12070,"date":"2025-08-16T08:35:13","date_gmt":"2025-08-16T06:35:13","guid":{"rendered":"https:\/\/webhosting.de\/spf-dkim-dmarc-bimi-erklaert-optimal-email-security-matrix\/"},"modified":"2025-08-16T08:35:13","modified_gmt":"2025-08-16T06:35:13","slug":"spf-dkim-dmarc-bimi%e3%80%81%e6%9c%80%e9%81%a9%e3%81%aa%e9%9b%bb%e5%ad%90%e3%83%a1%e3%83%bc%e3%83%ab%e3%83%bb%e3%82%bb%e3%82%ad%e3%83%a5%e3%83%aa%e3%83%86%e3%82%a3%e3%83%bb%e3%83%9e%e3%83%88%e3%83%aa","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/spf-dkim-dmarc-bimi-erklaert-optimal-email-security-matrix\/","title":{"rendered":"SPF\u3001DKIM\u3001DMARC\u3001BIMI\u306b\u3064\u3044\u3066\uff1a\u4f01\u696d\u3068\u30d6\u30e9\u30f3\u30c9\u306e\u305f\u3081\u306e\u96fb\u5b50\u30e1\u30fc\u30eb\u4fdd\u8b77"},"content":{"rendered":"<p>SPF\u3001DKIM\u3001DMARC\u3001BIMI\u306f\u3001\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u3068\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u306a\u30c4\u30fc\u30eb\u3067\u3059\u3002SPF 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height=\"1024\"\/>\n<\/figure>\n\n\n<h2>SPF\u306e\u672c\u5f53\u306e\u52b9\u679c<\/h2>\n<p><strong>SPF<\/strong> (Sender Policy Framework)\u306f\u3001\u3069\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304c\u30c9\u30e1\u30a4\u30f3\u306b\u4ee3\u308f\u3063\u3066\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u6a29\u9650\u304c\u3042\u308b\u304b\u3092\u6c7a\u5b9a\u3059\u308bDNS\u30d9\u30fc\u30b9\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u8a8d\u53ef\u3055\u308c\u305f\u30b5\u30fc\u30d0\u30fc\u3060\u3051\u304c\u3053\u306e\u30ea\u30b9\u30c8\u306b\u8f09\u308a\u3001\u305d\u308c\u4ee5\u5916\u306f\u3059\u3079\u3066\u7591\u308f\u3057\u3044\u3068\u307f\u306a\u3055\u308c\u307e\u3059\u3002\u30ea\u30b9\u30c8\u306b\u63b2\u8f09\u3055\u308c\u3066\u3044\u306a\u3044\u30b5\u30fc\u30d0\u30fc\u7d4c\u7531\u3067\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u9001\u4fe1\u3055\u308c\u305f\u5834\u5408\u3001\u305d\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u6f5c\u5728\u7684\u306b\u5371\u967a\u306a\u3082\u306e\u3068\u3057\u3066\u5206\u985e\u3055\u308c\u308b\u304b\u3001\u53d7\u4fe1\u30b7\u30b9\u30c6\u30e0\u306b\u3088\u3063\u3066\u30d6\u30ed\u30c3\u30af\u3055\u308c\u307e\u3059\u3002<\/p>\n\n<p>\u3053\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u5f37\u307f\u306f\u3001\u305d\u306e\u30b7\u30f3\u30d7\u30eb\u3055\u306b\u3042\u308b\u3002\u4f8b\u3048\u3070\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u3092\u884c\u3046\u305f\u3081\u306b\u9001\u4fe1\u8005\u30a2\u30c9\u30ec\u30b9\u3092\u6539\u3056\u3093\u3059\u308b\u306a\u308a\u3059\u307e\u3057\u653b\u6483\u304b\u3089\u78ba\u5b9f\u306b\u4fdd\u8b77\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u7279\u306b\u4f01\u696d\u306b\u3068\u3063\u3066\u306f\u3001\u5b89\u5168\u306a\u96fb\u5b50\u30e1\u30fc\u30eb\u30fb\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u3078\u306e\u4e0d\u53ef\u6b20\u306a\u4e00\u6b69\u3067\u3042\u308b\u3002<\/p>\n\n<p>\u79c1\u306fSPF\u3067\u300c*\u300d\u306e\u3088\u3046\u306a\u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u4f7f\u308f\u306a\u3044\u3088\u3046\u306b\u7279\u306b\u6ce8\u610f\u3057\u3066\u3044\u308b\u3002\u305d\u306e\u4ee3\u308f\u308a\u3001\u79c1\u306e\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u306b\u306f\u3001\u65e2\u77e5\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3068IP\u30a2\u30c9\u30ec\u30b9\u3060\u3051\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30c7\u30a3\u30b9\u30d1\u30c3\u30c1\u30b5\u30fc\u30d0\u30fc\u306e\u91cd\u8981\u306a\u5909\u66f4\u306f\u3001\u5e38\u306bDNS\u8a2d\u5b9a\u3067\u76f4\u63a5\u66f4\u65b0\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n<p>\u307e\u305f\u3001SPF\u306e\u69d8\u3005\u306a\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u614e\u91cd\u306b\u8a08\u753b\u3059\u308b\u3053\u3068\u304c\u671b\u307e\u3057\u3044\u3002A <em>\u542b\u3080<\/em>-\u4f8b\u3048\u3070\u3001\u5916\u90e8\u30cb\u30e5\u30fc\u30b9\u30ec\u30bf\u30fc\u30fb\u30d7\u30ed\u30d0\u30a4\u30c0\u306e\u30a8\u30f3\u30c8\u30ea\u306f\u3001\u5b9f\u969b\u306b\u4f7f\u7528\u3055\u308c\u308b \u30b5\u30fc\u30d3\u30b9\u306b\u306e\u307f\u9069\u7528\u3059\u3079\u304d\u3067\u3042\u308b\u3002\u30a8\u30f3\u30c8\u30ea\u306e\u9806\u756a\u3082\u95a2\u4fc2\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 <em>\u30eb\u30c3\u30af\u30a2\u30c3\u30d7<\/em> 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<em>\u30d5\u30a9\u30ef\u30fc\u30c9<\/em> 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(DomainKeys Identified Mail\uff09\u306f\u3001\u9001\u4fe1\u8005\u306e\u507d\u9020\u304b\u3089\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u4fdd\u8b77\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u64cd\u4f5c\u304b\u3089\u3082\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002\u9001\u4fe1\u3055\u308c\u308b\u5404\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u5074\u3067\u500b\u5225\u306e\u7f72\u540d\u304c\u4ed8\u4e0e\u3055\u308c\u308b\u3002\u3053\u306e\u305f\u3081\u306e\u516c\u958b\u9375\u306f\u30c9\u30e1\u30a4\u30f3\u306eDNS\u3067\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u306f\u3059\u3079\u3066\u771f\u6b63\u6027\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n<p>\u3053\u306e\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u306b\u3088\u308a\u3001\u6c17\u4ed8\u304b\u308c\u305a\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9014\u4e2d\u3067\u5909\u66f4\u3059\u308b\u3053\u3068\u306f\u4e0d\u53ef\u80fd\u306b\u306a\u308b\u3002\u59a5\u5354\u3055\u308c\u305f\u30b3\u30f3\u30c6\u30f3\u30c4\u3001\u64cd\u4f5c\u3055\u308c\u305f\u30ea\u30f3\u30af\u3001\u4ea4\u63db\u3055\u308c\u305f\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u78ba\u5b9f\u306b\u30de\u30b9\u30af\u3055\u308c\u307e\u305b\u3093\u3002\u3055\u3089\u306b\u3001DKIM\u30c1\u30a7\u30c3\u30af\u304c\u6210\u529f\u3059\u308b\u3068\u3001\u53d7\u4fe1\u30b7\u30b9\u30c6\u30e0\u306f\u9001\u4fe1\u8005\u304c\u4fe1\u983c\u3067\u304d\u308b\u3053\u3068\u3092\u793a\u3057\u3001\u914d\u4fe1\u7387\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n\n<p><strong>\u5b9f\u7528\u5316<\/strong>\u516c\u958b\u9375\u3068\u79d8\u5bc6\u9375\u3092\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3067\u751f\u6210\u3057\u307e\u3059\u3002\u305d\u3057\u3066\u516c\u958b\u9375\u3092DNS\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3068\u3057\u3066\u5165\u529b\u3059\u308b\u3002\u305d\u308c\u4ee5\u964d\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306f\u3059\u3079\u3066\u306e\u9001\u4fe1\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u81ea\u52d5\u7684\u306b\u7f72\u540d\u3092\u8ffd\u52a0\u3057\u3001\u53d7\u4fe1\u8005\u306f\u516c\u958b\u9375\u3067\u6709\u52b9\u6027\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/08\/email-schutz-besprechung-1234.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<p>DKIM\u3092\u8a2d\u5b9a\u3059\u308b\u969b\u306b\u306f\u3001\u3044\u308f\u3086\u308b <em>\u30bb\u30ec\u30af\u30bf\u30fc<\/em> \u3092\u76e3\u8996\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8907\u6570\u306e\u516c\u958b\u9375\u3092\u4e26\u884c\u3057\u3066\u64cd\u4f5c\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308b\u3002\u4f8b\u3048\u3070\u3001\u9375\u3092\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3059\u308b\u5834\u5408\u3001\u65b0\u3057\u3044\u30bb\u30ec\u30af\u30bf\u3092\u8ffd\u52a0\u3057\u3001\u79fb\u884c\u30d5\u30a7\u30fc\u30ba\u306e\u5f8c\u306b\u53e4\u3044\u30bb\u30ec\u30af\u30bf\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7d99\u7d9a\u7684\u306a\u7f72\u540d\u304c\u4fdd\u8a3c\u3055\u308c\u3001\u9375\u306e\u5909\u66f4\u6642\u306e\u554f\u984c\u3082\u56de\u907f\u3067\u304d\u308b\u3002<\/p>\n\n<p>\u3082\u3046\u3072\u3068\u3064\u306e\u304a\u52e7\u3081\u306f\u3001\u30ad\u30fc\u3092\u5b9a\u671f\u7684\u306b\u4ea4\u63db\uff08\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\uff09\u3059\u308b\u3053\u3068\u3060\u3002\u79c1\u306f\u3001\u6f5c\u5728\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fb\u30ea\u30b9\u30af\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u305f\u3081\u30016\u30ab\u6708\u304b\u308912\u30ab\u6708\u306e\u9593\u9694\u3067\u9375\u3092\u4ea4\u63db\u3057\u3066\u3044\u308b\u3002\u79d8\u5bc6\u9375\u304c\u6f0f\u6d29\u3057\u3066\u3082\u3001\u79c1\u306f\u8fc5\u901f\u306b\u5bfe\u5fdc\u3057\u3001\u7f72\u540d\u306e\u4fdd\u8b77\u3092\u7d99\u7d9a\u3067\u304d\u308b\u3002<\/p>\n\n<h2>DMARC\uff1a\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3001\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3001\u30ec\u30dd\u30fc\u30c8<\/h2>\n<p><strong>\uff24\uff2d\uff21\uff32\uff23<\/strong> \u306f\u3001SPF\u3068DKIM\u3092\u7d71\u5408\u3057\u3066\u5168\u4f53\u7684\u306a\u30c1\u30a7\u30c3\u30af\u306e\u6c7a\u5b9a\u3092\u884c\u3044\u3001\u53d7\u4fe1\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u304c\u30c1\u30a7\u30c3\u30af\u306b\u5931\u6557\u3057\u305f\u5834\u5408\u306b\u3069\u306e\u3088\u3046\u306b\u5bfe\u51e6\u3059\u308b\u304b\u3092\u6c7a\u5b9a\u3059\u308b\u3002\u30c9\u30e1\u30a4\u30f3\u6240\u6709\u8005\u3067\u3042\u308b\u79c1\u306f\u3001\u8a8d\u8a3c\u3055\u308c\u3066\u3044\u306a\u3044\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u5bfe\u3057\u3066\u4f55\u3092\u3059\u308b\u304b\u3092\u6c7a\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059-\u7121\u8996\u3059\u308b\u304b\u3001\u9694\u96e2\u306b\u79fb\u3059\u304b\u3001\u30d6\u30ed\u30c3\u30af\u3059\u308b\u304b\u3002<\/p>\n\n<p>DMARC\u30ec\u30dd\u30fc\u30c8\u306f\u91cd\u8981\u306a\u8981\u7d20\u3067\u3059\u3002\u79c1\u306e\u30c9\u30e1\u30a4\u30f3\u3067\u9001\u4fe1\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306b\u3064\u3044\u3066\u3001\u30c1\u30a7\u30c3\u30af\u306b\u5408\u683c\u3057\u305f\u304b\u3069\u3046\u304b\u3092\u6bce\u65e5\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3057\u3066\u304f\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u60aa\u7528\u304c\u900f\u660e\u5316\u3055\u308c\u3001\u653b\u6483\u306e\u8a66\u307f\u3092\u65e9\u3044\u6bb5\u968e\u3067\u8a8d\u8b58\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n<p>\u751f\u7523\u7684\u306a\u904b\u7528\u306e\u305f\u3081\u306b\u306f\u3001\u79c1\u306f\u660e\u78ba\u306b\u300c\u62d2\u5426\u300d\u30dd\u30ea\u30b7\u30fc\u3092\u63a8\u5968\u3059\u308b\u304c\u3001\u300c\u306a\u3057\u300d\u3067\u306e\u89b3\u5bdf\u6bb5\u968e\u3092\u7d4c\u3066\u3001\u5f8c\u306b\u300c\u9694\u96e2\u300d\u3059\u308b\u3002\u79c1\u306f\u5b9a\u671f\u7684\u306b\u30ec\u30dd\u30fc\u30c8\u3092\u5206\u6790\u3057\u3001\u6b21\u306e\u3088\u3046\u306a\u76e3\u8996\u30c4\u30fc\u30eb\u3067\u4fdd\u8b77\u3092\u6700\u9069\u5316\u3057\u3066\u3044\u307e\u3059\u3002 <a href=\"https:\/\/webhosting.de\/ja\/dmarc%e3%81%8c%e3%82%bb%e3%82%ad%e3%83%a5%e3%82%a2%e3%83%8d%e3%83%83%e3%83%88%e3%81%ae%e3%82%b9%e3%83%97%e3%83%bc%e3%83%95%e3%82%a3%e3%83%b3%e3%82%b0%e3%82%92%e5%a0%b1%e5%91%8a\/\">DMARC\u30ec\u30dd\u30fc\u30c8\u3092\u7684\u3092\u7d5e\u3063\u3066\u5206\u6790\u3059\u308b<\/a>.<\/p>\n\n<p>\u591a\u304f\u306e\u4f01\u696d\u304c\u6700\u521d\u306b\u904e\u5c0f\u8a55\u4fa1\u3059\u308b\u5074\u9762\u306e1\u3064\u304c\u3001DMARC\u306b\u304a\u3051\u308b\u6574\u5408\u8981\u4ef6\u306e\u554f\u984c\u3067\u3042\u308b\u3002DMARC\u304c\u30e1\u30fc\u30eb\u3092\u8a8d\u8a3c\u6e08\u307f\u3068\u3057\u3066\u5206\u985e\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u9001\u4fe1\u8005\u3068DKIM\/\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\uff08\u3044\u308f\u3086\u308b <em>\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8<\/em>).\u3053\u308c\u306f \"\u30ea\u30e9\u30c3\u30af\u30b9 \"\u307e\u305f\u306f \"\u53b3\u683c \"\u306a\u65b9\u6cd5\u3067\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3002 <em>\u53b3\u3057\u3044<\/em> \u3064\u307e\u308a\u3001From\u30d8\u30c3\u30c0\u30fc\u306e\u30c9\u30e1\u30a4\u30f3\u306f\u3001DKIM\u7f72\u540d\u306e\u30c9\u30e1\u30a4\u30f3\u3068\u6b63\u78ba\u306b\u4e00\u81f4\u3057\u306a\u3051\u308c \u3070\u306a\u3089\u306a\u3044\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u653b\u6483\u8005\u304c\u3001\u305f\u3068\u3048\u3070SPF\u3084DKIM\u306b\u6709\u52b9\u306a\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092\u4f7f\u7528\u3057 \u3066\u3082\u3001\u76ee\u306b\u898b\u3048\u308b\u9001\u4fe1\u8005\u306e\u30e1\u30a4\u30f3\u30c9\u30e1\u30a4\u30f3\u3092\u507d\u9020\u3059\u308b\u3053\u3068\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n<p>\u6280\u8853\u7684\u306a\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u30fc\u306b\u3088\u3063\u3066\u306f\u3001\u53b3\u5bc6\u306a\u8abf\u6574\u304c\u96e3\u3057\u3044\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002CRM\u30b7\u30b9\u30c6\u30e0\u3001\u30cb\u30e5\u30fc\u30b9\u30ec\u30bf\u30fc\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3001\u307e\u305f\u306f\u30e1\u30a4\u30f3\u30c9\u30e1\u30a4\u30f3\u306b\u4ee3\u308f\u3063\u3066\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u5916\u90e8\u30b5\u30fc\u30d3\u30b9\u306f\u3001\u6b63\u3057\u304f\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u79c1\u306f\u3001\u4e0d\u5fc5\u8981\u306a\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306e\u4f7f\u7528\u3092\u907f\u3051\u308b\u304b\u3001\u5404\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u304c\u72ec\u81ea\u306eDKIM\u30bb\u30ec\u30af\u30bf\u3068SPF\u30a8\u30f3\u30c8\u30ea\u3092\u6301\u3064\u3088\u3046\u306b\u610f\u56f3\u7684\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u79c1\u306f\u4e00\u8cab\u3057\u305f\u6982\u89b3\u3092\u4fdd\u3061\u3001\u8a8d\u8a3c\u306e\u554f\u984c\u3092\u3088\u308a\u8fc5\u901f\u306b\u7279\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/08\/email-schutz-spf-dkim-dmarc-bimi-8473.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>BIMI\uff1a\u5b89\u5168\u3092\u53ef\u8996\u5316\u3059\u308b<\/h2>\n<p><strong>BIMI<\/strong> (Brand Indicators for Message Identification)\u306f\u3001\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u516c\u5f0f\u30ed\u30b4\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30fc\u30eb\u3092\u30cf\u30a4\u30e9\u30a4\u30c8\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u306e\u53ef\u8996\u5316\u6a5f\u80fd\u306f\u3001SPF\u3001DKIM\u3001DMARC\u306e\u30c1\u30a7\u30c3\u30af\u304c\u6b63\u3057\u304f\u901a\u904e\u3057\u3001DMARC\u304c\u300c\u9694\u96e2\u300d\u307e\u305f\u306f\u300c\u62d2\u5426\u300d\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306b\u306e\u307f\u6a5f\u80fd\u3057\u307e\u3059\u3002<\/p>\n\n<p>SVG Tiny P\/S\u3092\u4f7f\u3063\u3066SVG\u5f62\u5f0f\u3067\u30ed\u30b4\u3092\u4f5c\u6210\u3057\u3001\u9069\u5207\u306aVMC\u8a3c\u660e\u66f8\u3092\u8cfc\u5165\u3057\u307e\u3057\u305f\u3002\u305d\u3057\u3066\u3001BIMI\u4ed5\u69d8\u306b\u5f93\u3063\u3066DNS\u30e9\u30a4\u30f3\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u305f\u3002\u305d\u306e\u7d50\u679c\u3001\u4e92\u63db\u6027\u306e\u3042\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u79c1\u306e\u4f1a\u793e\u306e\u30ed\u30b4\u304c\u8868\u793a\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u4fe1\u983c\u304c\u751f\u307e\u308c\u3001\u30d6\u30e9\u30f3\u30c9\u30fb\u30ed\u30a4\u30e4\u30eb\u30c6\u30a3\u304c\u5f37\u5316\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n<p>\u30b9\u30c6\u30c3\u30d7\u30fb\u30d0\u30a4\u30fb\u30b9\u30c6\u30c3\u30d7\u3067 <a href=\"https:\/\/webhosting.de\/ja\/bimi%e3%82%bb%e3%83%83%e3%83%88%e3%82%a2%e3%83%83%e3%83%97-e%e3%83%a1%e3%83%bc%e3%83%ab-%e3%83%ad%e3%82%b4-dns-d%e3%83%9e%e3%83%ab%e3%82%af-vmc%e3%82%ac%e3%82%a4%e3%83%89-%e3%82%b7%e3%83%bc%e3%83%ab\/\">\u30ed\u30b4\u5165\u308aBIMI\u304cE\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u8868\u793a\u3055\u308c\u308b\u3002<\/a>.<\/p>\n\n<p>BIMI\u306e\u5c0e\u5165\u306b\u306f\u3001\u3057\u3070\u3057\u3070\u793e\u5185\u306e\u5354\u8abf\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u5fc5\u8981\u3068\u306a\u308b\u3002\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30fb\u30de\u30cd\u30b8\u30e3\u30fc\u306f\u30ed\u30b4\u3092\u914d\u7f6e\u3057\u305f\u3044\u3068\u8003\u3048\u3001IT\u30de\u30cd\u30b8\u30e3\u30fc\u306fDNS\u30a8\u30f3\u30c8\u30ea\u30fc\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fb\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u4e21\u65b9\u304c\u6b63\u3057\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u305a\u3001\u6cd5\u52d9\u90e8\u306f\u8a3c\u660e\u66f8\u30c7\u30fc\u30bf\u306b\u6ce8\u610f\u3092\u6255\u3046\u3002\u3053\u306e\u3088\u3046\u306a\u5404\u90e8\u9580\u306e\u76f8\u4e92\u4f5c\u7528\u306e\u4e2d\u3067\u3053\u305d\u3001\u9069\u5207\u306a\u8abf\u6574\u304c\u4e0d\u53ef\u6b20\u306a\u306e\u3067\u3059\u3002\u79c1\u306f\u3001\u3059\u3079\u3066\u306e\u30b9\u30c6\u30c3\u30d7\u3092\u5fd8\u308c\u305f\u308a\u7e70\u308a\u8fd4\u3057\u305f\u308a\u3057\u306a\u3044\u3088\u3046\u3001\u660e\u78ba\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u8a08\u753b\u3092\u4f5c\u6210\u3059\u308b\u3002<\/p>\n\n<h2>\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u6280\u8853\u7684\u6bd4\u8f03<\/h2>\n<p>\u3053\u306e\u8868\u3067\u306f\u30014\u3064\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u6bd4\u8f03\u3057\u3001\u305d\u308c\u305e\u308c\u306e\u6a5f\u80fd\u3092\u660e\u78ba\u306b\u793a\u3057\u3066\u3044\u308b\uff1a<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>\u30d7\u30ed\u30c8\u30b3\u30eb<\/th>\n      <th>\u4e3b\u306a\u76ee\u7684<\/th>\n      <th>DNS\u30a8\u30f3\u30c8\u30ea\u30fc\u304c\u5fc5\u8981<\/th>\n      <th>\u306a\u308a\u3059\u307e\u3057\u3092\u9632\u3050\uff1f<\/th>\n      <th>\u305d\u306e\u4ed6\u306e\u5229\u70b9<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>SPF<\/td>\n      <td>\u56fa\u5b9a\u9001\u4fe1\u8005IP\u30a2\u30c9\u30ec\u30b9<\/td>\n      <td>\u306f\u3044 (TXT)<\/td>\n      <td>\u3042\u308a\uff08\u30d1\u30b9\u30dd\u30fc\u30c8\u30c1\u30a7\u30c3\u30af\u306e\u307f\uff09<\/td>\n      <td>\u914d\u9054\u7387\u306e\u5411\u4e0a<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30c7\u30a3\u30fc\u30b1\u30fc\u30a2\u30a4\u30a8\u30e0<\/td>\n      <td>\u5b89\u5168\u306a\u7f72\u540d\u4ed8\u304d\u30b3\u30f3\u30c6\u30f3\u30c4<\/td>\n      <td>\u306f\u3044\uff08\u516c\u958b\u9375\u4ed8\u304dTXT\uff09<\/td>\n      <td>\u566b<\/td>\n      <td>\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u5b8c\u5168\u6027<\/td>\n    <\/tr>\n    <tr>\n      <td>\uff24\uff2d\uff21\uff32\uff23<\/td>\n      <td>\u65bd\u884c\uff0b\u5831\u544a<\/td>\n      <td>\u306f\u3044 (TXT)<\/td>\n      <td>\u566b<\/td>\n      <td>\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4e00\u5143\u7ba1\u7406<\/td>\n    <\/tr>\n    <tr>\n      <td>BIMI<\/td>\n      <td>\u30d6\u30e9\u30f3\u30c9\u306e\u53ef\u8996\u6027<\/td>\n      <td>\u3042\u308a\uff08TXT + VMC\u30aa\u30d7\u30b7\u30e7\u30f3\uff09<\/td>\n      <td>DMARC\u3068\u306e\u7d44\u307f\u5408\u308f\u305b\u306e\u307f<\/td>\n      <td>\u4fe1\u983c\u3067\u304d\u308b\u9001\u4fe1\u8005<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<p>SPF\u306f\u3001\u507d\u9020\u3055\u308c\u305f\u9001\u4fe1\u8005\u306e\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3092\u6700\u521d\u304b\u3089\u9589\u9396\u3059\u308b\u306e\u3067\u3001\u3053\u308c\u3089\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u4e2d\u3067\u57fa\u672c\u7684\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u3044\u308b\u3002DKIM\u306f\u307e\u305f\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u5185\u5bb9\u304c\u5909\u66f4\u3055\u308c\u306a\u3044\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u3002DMARC\u306f\u3001\u305d\u306e\u4e21\u65b9\u3092\u660e\u78ba\u306a\u5b9f\u65bd\u30eb\u30fc\u30eb\u3068\u4fa1\u5024\u3042\u308b\u30ec\u30dd\u30fc\u30c8\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u3044\u308b\u3002\u6700\u5f8c\u306b\u3001BIMI\u306f\u53d7\u4fe1\u8005\u304c\u9001\u4fe1\u8005\u3092\u8996\u899a\u7684\u306b\u8a8d\u8b58\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3067\u3001\u5168\u4f53\u3092\u8996\u899a\u7684\u306b\u5f37\u5316\u3059\u308b\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u308c\u3089\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u7d44\u307f\u5408\u308f\u305b\u306f\u3001\u7d14\u7c8b\u306a\u30b9\u30d1\u30e0\u5bfe\u7b56\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u306e\u57df\u3092\u306f\u308b\u304b\u306b\u8d85\u3048\u3001\u5168\u4f53\u7684\u306a\u30d6\u30e9\u30f3\u30c9\u30a4\u30e1\u30fc\u30b8\u3092\u5411\u4e0a\u3055\u305b\u3001\u9577\u671f\u7684\u306b\u30c7\u30b8\u30bf\u30eb\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u5bfe\u3059\u308b\u4fe1\u983c\u3092\u5f37\u5316\u3057\u307e\u3059\u3002<\/p>\n\n<h2>\u5b9f\u969b\u306e\u5b9f\u73fe<\/h2>\n<p>\u79c1\u306e\u30a2\u30c9\u30d0\u30a4\u30b9\uff1a\u307e\u305aSPF\u3092\u5c0e\u5165\u3057\u3001\u6b63\u5f53\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304c\u6b63\u3057\u304f\u30ea\u30b9\u30c8\u30a2\u30c3\u30d7\u3055\u308c\u308b\u304b\u30c6\u30b9\u30c8\u3059\u308b\u3002\u7d9a\u3044\u3066DKIM\u3068\u7f72\u540d\u30ad\u30fc\u3002DMARC\u306f\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3068\u3057\u3066\u6700\u5f8c\u306b\u6765\u308b\u3002\u3059\u3079\u3066\u306e\u30c1\u30a7\u30c3\u30af\u306b\u30a8\u30e9\u30fc\u304c\u306a\u304f\u3001\u4e0d\u6b63\u4f7f\u7528\u304c\u9664\u5916\u3055\u308c\u305f\u3089\u3001\u3059\u3050\u306b\u300c\u62d2\u5426\u300d\u306b\u5207\u308a\u66ff\u3048\u3001\u305d\u308c\u304b\u3089BIMI\u3092\u5b8c\u5168\u306b\u6709\u52b9\u306b\u3059\u308b\u3002<\/p>\n\n<p>\u6280\u8853\u7684\u306a\u8a2d\u5b9a\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\u65b9\u306f\u3001\u3053\u3061\u3089\u306e\u8a18\u4e8b\u3067\u6982\u8981\u3092\u3054\u89a7\u3044\u305f\u3060\u3051\u307e\u3059\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e9%9b%bb%e5%ad%90%e3%83%a1%e3%83%bc%e3%83%ab%e8%aa%8d%e8%a8%bc-spf-dkim-dmarc-%e3%82%ac%e3%82%a4%e3%83%89\/\">\u96fb\u5b50\u30e1\u30fc\u30eb\u8a8d\u8a3c\u30b3\u30f3\u30d1\u30af\u30c8\u30fb\u30c6\u30af\u30cb\u30ab\u30eb\u30fb\u30ac\u30a4\u30c9<\/a>.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/08\/email-schutz-2023-7491.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<p>\u5b9f\u969b\u306e\u7d4c\u9a13\u304b\u3089\u3001\u5fb9\u5e95\u7684\u306a\u30c6\u30b9\u30c8\u6bb5\u968e\u304c\u91cd\u8981\u3067\u3042\u308b\u3053\u3068\u3082\u5831\u544a\u3067\u304d\u308b\u3002\u3053\u306e\u9593\u3001\u79c1\u306f\u3059\u3079\u3066\u306e\u30e1\u30fc\u30eb\u3092\u5b9a\u671f\u7684\u306b\u9001\u4fe1\u3057\u3001DMARC\u30ec\u30dd\u30fc\u30c8\u3092\u76e3\u8996\u3057\u3001\u4f7f\u7528\u3059\u308b\u3059\u3079\u3066\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u6b63\u3057\u304f\u5165\u529b\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u5916\u90e8\u306e\u30cb\u30e5\u30fc\u30b9\u30ec\u30bf\u30fc\u3084CRM\u3001\u30b5\u30dd\u30fc\u30c8\u30c4\u30fc\u30eb\u306f\u5fd8\u308c\u304c\u3061\u3067\u3059\u3002\u79c1\u306e\u30c9\u30e1\u30a4\u30f3\u3067\u9001\u4fe1\u8005\u6a29\u9650\u3092\u4e3b\u5f35\u3059\u308b\u3059\u3079\u3066\u306e\u9001\u4fe1\u5143\u3092SPF\u306b\u8a18\u8f09\u3057\u3001\u53ef\u80fd\u3067\u3042\u308c\u3070DKIM\u306b\u3082\u542b\u3081\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30e1\u30fc\u30eb\u304c\u3069\u3053\u304b\u3067\u62d2\u5426\u3055\u308c\u305f\u5834\u5408\u3001DMARC\u30ec\u30dd\u30fc\u30c8\u306b\u542b\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u30c7\u30d0\u30c3\u30b0\u3084\u6700\u7d42\u7684\u306a\u5fae\u8abf\u6574\u306b\u975e\u5e38\u306b\u5f79\u7acb\u3064\u3002<\/p>\n\n<p>\u3059\u3079\u3066\u304c\u30b9\u30e0\u30fc\u30ba\u306b\u6a5f\u80fd\u3059\u308b\u3088\u3046\u306b\u306a\u308c\u3070\u3001\u79c1\u306f\u81ea\u4fe1\u3092\u6301\u3063\u3066\u81ea\u5206\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u300c\u9694\u96e2\u300d\u3084\u300c\u62d2\u5426\u300d\u306b\u5207\u308a\u66ff\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u5229\u70b9\uff1a\u9069\u5207\u306b\u8a8d\u8a3c\u3055\u308c\u3066\u3044\u306a\u3044\u30e1\u30fc\u30eb\u306f\u5373\u5ea7\u306b\u6574\u7406\u3055\u308c\u308b\u306e\u3067\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u653b\u6483\u304c\u3088\u308a\u56f0\u96e3\u306b\u306a\u308b\u3002\u793e\u5185\u3067\u306f\u3001\u4ed6\u90e8\u7f72\u304cDNS\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u8abf\u6574\u305b\u305a\u306b\u65b0\u3057\u3044\u30c4\u30fc\u30eb\u3084\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u306a\u3044\u3088\u3046\u306b\u3001\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u30b3\u30fc\u30b9\u3082\u958b\u50ac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n<h2>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30fb\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u6bd4\u8f03<\/h2>\n<p>\u591a\u304f\u306e\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001SPF\u3001DKIM\u3001DMARC\u3092\u30ab\u30b9\u30bf\u30de\u30fc\u30d1\u30cd\u30eb\u3067\u76f4\u63a5\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u81ea\u52d5\u30ec\u30dd\u30fc\u30c8\u30b5\u30de\u30ea\u30fc\u3084\u30b7\u30f3\u30d7\u30eb\u306aBIMI\u7d71\u5408\u306a\u3069\u3001\u3088\u308a\u591a\u304f\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u3068\u3053\u308d\u3082\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u6982\u8981\u306f\u3001\u63a8\u5968\u30b5\u30fc\u30d3\u30b9\u3092\u793a\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>\u5834\u6240<\/th>\n      <th>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc<\/th>\n      <th>\u96fb\u5b50\u30e1\u30fc\u30eb\u30fb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fb\u30b5\u30dd\u30fc\u30c8<\/th>\n      <th>\u7279\u5225\u306a\u6a5f\u80fd<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>1<\/td>\n      <td>webhoster.de<\/td>\n      <td>\u566b<\/td>\n      <td>\u5feb\u9069\u306a\u5bb6\u5177\u3001\u6700\u9ad8\u306e\u4fa1\u683c\u6027\u80fd\u6bd4<\/td>\n    <\/tr>\n    <tr>\n      <td>2<\/td>\n      <td>\u30d7\u30ed\u30d0\u30a4\u30c0\u30fcB<\/td>\n      <td>\u566b<\/td>\n      <td>\u2013<\/td>\n    <\/tr>\n    <tr>\n      <td>3<\/td>\n      <td>\u30d7\u30ed\u30d0\u30a4\u30c0\u30fcC<\/td>\n      <td>\u566b<\/td>\n      <td>\u2013<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/08\/email-schutz-1234.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<p>\u79c1\u306e\u7d4c\u9a13\u3067\u306f\u3001\u512a\u308c\u305f\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30fb\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u73fe\u5728\u3001SPF\u3068DKIM\u306e\u300c\u30aa\u30f3\uff0f\u30aa\u30d5\u300d\u30dc\u30bf\u30f3\u4ee5\u4e0a\u306e\u3082\u306e\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u3002\u4f8b\u3048\u3070\u3001SPF\u30ec\u30b3\u30fc\u30c9\u304c\u9577\u3059\u304e\u305f\u308a\u300110\u4ee5\u4e0a\u306eDNS\u30ec\u30b3\u30fc\u30c9\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u6700\u65b0\u306e\u30d1\u30cd\u30eb\u304c\u4fee\u6b63\u3092\u63d0\u6848\u3059\u308b\u3002<em>\u30eb\u30c3\u30af\u30a2\u30c3\u30d7<\/em> \u304c\u5fc5\u8981\u3067\u3059\u3002\u307e\u305f\u3001\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306b\u3088\u3063\u3066\u306f\u3001\u904e\u53bb\u306eDMARC\u30ed\u30b0\u306e\u30b0\u30e9\u30d5\u30a3\u30ab\u30eb\u306a\u6982\u8981\u3092\u63d0\u4f9b\u3057\u3001\u8fc5\u901f\u306a\u89e3\u91c8\u3092\u7c21\u7d20\u5316\u3057\u3066\u3044\u308b\u3002\u3053\u306e\u3088\u3046\u306a\u30d1\u30cd\u30eb\u3067\u306f\u3001BIMI\u3092\u6709\u52b9\u5316\u3057\u3001VMC\u8a3c\u660e\u66f8\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u60c5\u5831\u3092\u7d71\u5408\u3059\u308b\u306e\u304c\u7406\u60f3\u7684\u3060\u3002<\/p>\n\n<p>\u3069\u306e\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304cDNS\u7ba1\u7406\u3092\u62c5\u5f53\u3057\u3066\u3044\u308b\u304b\u306b\u6ce8\u610f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u30a6\u30a7\u30d6\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u3068\u306f\u5225\u306e\u3068\u3053\u308d\u3067DNS\u7ba1\u7406\u304c\u884c\u308f\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u624b\u52d5\u3067\u8a2d\u5b9a\u3092\u540c\u671f\u3055\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3053\u3068\u304c\u3088\u304f\u3042\u308b\u3002\u3053\u308c\u306f\u554f\u984c\u3067\u306f\u306a\u3044\u304c\u3001\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304c\u81ea\u52d5SPF\u8a2d\u5b9a\u3092\u4e0a\u66f8\u304d\u3057\u306a\u3044\u3088\u3046\u306b\u3001\u3042\u308b\u3044\u306f\u305d\u306e\u9006\u306b\u306a\u3089\u306a\u3044\u3088\u3046\u306b\u3001\u898f\u5f8b\u3092\u5b88\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002DNS\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u5b9a\u671f\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30fc\u30eb\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u4e0d\u8981\u306a\u969c\u5bb3\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/08\/email-schutz-4231.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30c8\u30e9\u30d6\u30eb\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u30d2\u30f3\u30c8<\/h2>\n<p>\u6642\u306b\u306f\u3001\u7d30\u5fc3\u306e\u6ce8\u610f\u3092\u6255\u3063\u3066\u3044\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u30e1\u30fc\u30eb\u304c\u62d2\u5426\u3055\u308c\u305f\u308a\u3001\u30b9\u30d1\u30e0\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u3063\u3066\u3057\u307e\u3063\u305f\u308a\u3068\u3001\u3046\u307e\u304f\u3044\u304b\u306a\u3044\u3053\u3068\u3082\u3042\u308b\u3002\u305d\u306e\u3088\u3046\u306a\u5834\u5408\u3001\u79c1\u306f\u69cb\u9020\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u3068\u308a\u307e\u3059\uff1a<\/p>\n<ol>\n  <li><strong>SPF\u3092\u500b\u5225\u306b\u30c6\u30b9\u30c8\u3059\u308b\uff1a<\/strong> \u30aa\u30f3\u30e9\u30a4\u30f3\u30c4\u30fc\u30eb\u3084\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\uff08\"dig \"\u306a\u3069\uff09\u3092\u4f7f\u3063\u3066SPF\u30ec\u30b3\u30fc\u30c9\u3092\u7167\u4f1a\u3057\u3001\u3059\u3079\u3066\u306eIP\u3084\u30b5\u30fc\u30d3\u30b9\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/li>\n  <li><strong>DKIM\u7f72\u540d\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\uff1a<\/strong> \u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u3092\u8aad\u307f\u53d6\u308a\u3001\u7f72\u540d\u304c\u6709\u52b9\u304b\u3069\u3046\u304b\u3092\u8868\u793a\u3059\u308b\u5916\u90e8\u30c6\u30b9\u30c8\u30c4\u30fc\u30eb\u306f\u3001\u3057\u3070\u3057\u3070\u5f79\u306b\u7acb\u3061\u307e\u3059\u3002\u307e\u305f <em>\u30bb\u30ec\u30af\u30bf\u30fc<\/em>-DNS\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3002<\/li>\n  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