{"id":22312,"date":"2026-06-25T13:01:04","date_gmt":"2026-06-25T04:01:04","guid":{"rendered":"https:\/\/blastmail.jp\/blog\/?p=22312"},"modified":"2026-06-25T13:07:49","modified_gmt":"2026-06-25T04:07:49","slug":"maildelivery-system-security","status":"publish","type":"post","link":"https:\/\/blastmail.jp\/blog\/mail-delivery\/maildelivery-system-security","title":{"rendered":"\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u306f\uff1f\u6f5c\u3080\u30ea\u30b9\u30af\u3068\u5b89\u5168\u306a\u9078\u3073\u65b9\u3092\u5fb9\u5e95\u89e3\u8aac"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2026\/06\/maildelivery-system-security.png\" alt=\"\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u306f\uff1f \u6f5c\u3080\u30ea\u30b9\u30af\u3068\u5b89\u5168\u306a\u9078\u3073\u65b9\u3092\u5fb9\u5e95\u89e3\u8aac\" width=\"1734\" 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href=\"https:\/\/privacymark.jp\/guideline\/wakaru\/tools_pms_2025_note.pdf\" target=\"_blank\" rel=\"noopener\">JIPDEC\u300c\u500b\u4eba\u60c5\u5831\u7ba1\u7406\u306e\u91cd\u8981\u6027\u300d(2025\u5e7411\u67086\u65e5\u516c\u8868\uff09<\/a>\uff09<\/p>\n<h3>\u62c5\u5f53\u8005\u306e\u8aa4\u9001\u4fe1\u306b\u3088\u308b\u60c5\u5831\u6f0f\u6d29<\/h3>\n<p>\u5185\u90e8\u8981\u56e0\u3067\u6700\u3082\u591a\u3044\u306e\u304c\u3001\u60aa\u610f\u306e\u306a\u3044<strong>\u8aa4\u9001\u4fe1<\/strong>\u3067\u3059\u3002\u9001\u4fe1\u5148\u306e\u6307\u5b9a\u3092\u9593\u9055\u3048\u308b\u3001\u672c\u6765\u9001\u308b\u3079\u304d\u3067\u306a\u3044\u76f8\u624b\u306b\u500b\u4eba\u60c5\u5831\u3092\u542b\u3080\u30e1\u30fc\u30eb\u3092\u9001\u3063\u3066\u3057\u307e\u3046\u3068\u3044\u3063\u305f\u30df\u30b9\u306f\u3001\u5b8c\u5168\u306b\u30bc\u30ed\u306b\u3059\u308b\u3053\u3068\u304c\u96e3\u3057\u3044\u3067\u3059\u3002\u500b\u4eba\u306e\u6ce8\u610f\u529b\u306b\u983c\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u9001\u4fe1\u524d\u306e\u30c1\u30a7\u30c3\u30af\u3092\u4ed5\u7d44\u307f\u5316\u3057\u3066\u9632\u3050\u3053\u3068\u304c\u91cd\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30a2\u30af\u30bb\u30b9\u6a29\u9650\u306e\u4e0d\u5099\u306b\u3088\u308b\u4e0d\u6b63\u30fb\u6f0f\u6d29<\/h3>\n<p>\u8ab0\u304c\u3069\u306e\u60c5\u5831\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u304b\u3092\u6b63\u3057\u304f\u7ba1\u7406\u3067\u304d\u3066\u3044\u306a\u3044\u3068\u3001<strong>\u672c\u6765\u305d\u306e\u60c5\u5831\u3092\u6271\u3046\u5fc5\u8981\u306e\u306a\u3044\u62c5\u5f53\u8005\u307e\u3067\u500b\u4eba\u60c5\u5831\u3092\u95b2\u89a7\u30fb\u6301\u3061\u51fa\u3057\u3067\u304d\u3066\u3057\u307e\u3044\u307e\u3059<\/strong>\u3002\u5168\u54e1\u304c\u7ba1\u7406\u8005\u6a29\u9650\u3092\u6301\u3061\u3001\u64cd\u4f5c\u5c65\u6b74\u3082\u6b8b\u3089\u306a\u3044\u72b6\u614b\u306f\u3001\u5185\u90e8\u4e0d\u6b63\u304c\u8d77\u304d\u3084\u3059\u304f\u3001\u554f\u984c\u304c\u8d77\u304d\u3066\u3082\u8ffd\u8de1\u3067\u304d\u307e\u305b\u3093\u3002\u62c5\u5f53\u8005\u3054\u3068\u306b\u6a29\u9650\u3092\u7d5e\u308a\u3001\u64cd\u4f5c\u3092\u8a18\u9332\u3067\u304d\u308b\u3053\u3068\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<h3>\u9000\u8077\u8005\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u653e\u7f6e<\/h3>\n<p><strong>\u4f7f\u308f\u308c\u306a\u304f\u306a\u3063\u305f\u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u6709\u52b9\u306a\u307e\u307e\u6b8b\u3063\u3066\u3044\u308b<\/strong>\u3068\u3001\u9000\u8077\u30fb\u7570\u52d5\u3057\u305f\u672c\u4eba\u304c\u5f8c\u304b\u3089\u30b7\u30b9\u30c6\u30e0\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3001\u60c5\u5831\u3092\u5f15\u304d\u51fa\u3059\u7d4c\u8def\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u4eba\u306e\u51fa\u5165\u308a\u306b\u5408\u308f\u305b\u3066\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u901f\u3084\u304b\u306b\u7121\u52b9\u5316\u3059\u308b\u904b\u7528\u304c\u6b20\u304b\u305b\u307e\u305b\u3093\u3002<\/p>\n<h3>\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u4f7f\u3044\u307e\u308f\u3057\u3084\u7ba1\u7406\u306e\u7518\u3055<\/h3>\n<p>\u90e8\u7f72\u5185\u3067\u540c\u3058\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5171\u6709\u3059\u308b\u3001\u5358\u7d14\u306a\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3044\u3063\u305f\u904b\u7528\u306f\u3001\u6d41\u51fa\u3084\u4e0d\u6b63\u30ed\u30b0\u30a4\u30f3\u306e\u30ea\u30b9\u30af\u3092\u9ad8\u3081\u307e\u3059\u3002\u30a2\u30ab\u30a6\u30f3\u30c8\u3054\u3068\u306b\u9069\u5207\u306a\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u8a2d\u5b9a\u30fb\u7ba1\u7406\u3067\u304d\u308b\u4ed5\u7d44\u307f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<h2>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u9ad8\u3044\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306e\u9078\u3073\u65b9<\/h2>\n<p>\u3053\u3053\u307e\u3067\u898b\u3066\u304d\u305f\u3088\u3046\u306b\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u306b\u306f\u5916\u90e8\u30fb\u5185\u90e8\u306e\u4e21\u9762\u3067\u3055\u307e\u3056\u307e\u306a\u30ea\u30b9\u30af\u304c\u6f5c\u3093\u3067\u3044\u307e\u3059\u3002\u305f\u3060\u3001\u3053\u308c\u3089\u306b\u904e\u5ea6\u306b\u8eab\u69cb\u3048\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u3046\u3057\u305f\u30ea\u30b9\u30af\u3078\u306e\u5bfe\u7b56\u304c\u7d44\u307f\u8fbc\u307e\u308c\u305f\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u9078\u3079\u3070\u3001\u5b89\u5168\u6027\u3092\u5927\u304d\u304f\u9ad8\u3081\u3089\u308c\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u3092\u9078\u3076\u969b\u306b\u78ba\u8a8d\u3057\u3066\u304a\u304d\u305f\u3044\u30dd\u30a4\u30f3\u30c8\u3092\u3001\u6a5f\u80fd\u9762\u30fb\u904b\u7528\u9762\u30fb\u4fe1\u983c\u6027\u306e\u89b3\u70b9\u304b\u3089\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h3>\u901a\u4fe1\u6697\u53f7\u5316\uff08SSL\/TLS\u30fbSTARTTLS\uff09\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u304b<\/h3>\n<p><strong>SSL\/TLS\u3068\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u3084\u308a\u53d6\u308a\u3055\u308c\u308b\u30c7\u30fc\u30bf\u3092\u6697\u53f7\u5316\u3057\u3001\u7b2c\u4e09\u8005\u306b\u8aad\u307f\u53d6\u3089\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u4ed5\u7d44\u307f<\/strong>\u3067\u3059\u3002\u901a\u4fe1\u306e\u6697\u53f7\u5316\u306f\u3001\u78ba\u8a8d\u3057\u305f\u3044\u7d4c\u8def\u304c\u5927\u304d\u304f2\u3064\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>1\u3064\u306f<strong>\u7ba1\u7406\u753b\u9762\u3078\u306e\u30a2\u30af\u30bb\u30b9<\/strong>\u3067\u3059\u3002\u30ed\u30b0\u30a4\u30f3\u3084\u64cd\u4f5c\u6642\u306e\u901a\u4fe1\u304cSSL\/TLS\u3067\u6697\u53f7\u5316\u3055\u308c\u3066\u3044\u306a\u3051\u308c\u3070\u3001ID\u3084\u30d1\u30b9\u30ef\u30fc\u30c9\u3001\u9867\u5ba2\u60c5\u5831\u3092\u76d7\u307f\u898b\u3089\u308c\u308b\u30ea\u30b9\u30af\u304c\u6b8b\u308a\u307e\u3059\u3002<\/p>\n<p>\u3082\u30461\u3064\u304c<strong>\u30e1\u30fc\u30eb\u3092\u914d\u4fe1\u3059\u308b\u969b\u306e\u30b5\u30fc\u30d0\u30fc\u9593\u901a\u4fe1<\/strong>\u3067\u3001\u3053\u3053\u3067\u4f7f\u308f\u308c\u308b\u306e\u304c<strong>STARTTLS<\/strong>\u3067\u3059\u3002STARTTLS\u306f\u9001\u4fe1\u5074\u3068\u53d7\u4fe1\u5074\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u9593\u306e\u901a\u4fe1\u3092\u6697\u53f7\u5316\u3057\u3001\u914d\u4fe1\u7d4c\u8def\u4e0a\u3067\u306e\u76d7\u8074\u3084\u6539\u3056\u3093\u306e\u30ea\u30b9\u30af\u3092\u6291\u3048\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u3001\u30e1\u30fc\u30eb\u304c\u6697\u53f7\u5316\u3055\u308c\u306a\u3044\u307e\u307e\u7d4c\u8def\u4e0a\u3092\u6d41\u308c\u3001\u7b2c\u4e09\u8005\u306b\u5185\u5bb9\u3092\u8aad\u307f\u53d6\u3089\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u4e0d\u6b63\u30ed\u30b0\u30a4\u30f3\u5bfe\u7b56\u306e\u6a5f\u80fd\u304c\u3042\u308b\u304b<\/h3>\n<p>\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3092\u9632\u3050\u306b\u306f\u3001\u30ed\u30b0\u30a4\u30f3\u305d\u306e\u3082\u306e\u3092\u5b88\u308b\u4ed5\u7d44\u307f\u304c\u6b20\u304b\u305b\u307e\u305b\u3093\u3002<strong>\u30a2\u30af\u30bb\u30b9\u3092\u8a31\u53ef\u3059\u308bIP\u30a2\u30c9\u30ec\u30b9\u3092\u5236\u9650\u3059\u308b\u6a5f\u80fd\u3084\u3001ID\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u306b\u52a0\u3048\u3066\u3082\u3046\u4e00\u6bb5\u968e\u306e\u8a8d\u8a3c\u3092\u6c42\u3081\u308b2\u6bb5\u968e\u8a8d\u8a3c\uff08\u591a\u8981\u7d20\u8a8d\u8a3c\uff09<\/strong>\u304c\u3042\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002\u3042\u308f\u305b\u3066\u3001\u30b7\u30b9\u30c6\u30e0\u5074\u3067\u4e0d\u5be9\u306a\u30a2\u30af\u30bb\u30b9\u3092\u76e3\u8996\u30fb\u906e\u65ad\u3059\u308b\u904b\u7528\u304c\u3055\u308c\u3066\u3044\u308b\u304b\u3082\u78ba\u8a8d\u3059\u308b\u3068\u3001\u3088\u308a\u5916\u90e8\u304b\u3089\u306e\u653b\u6483\u306b\u5f37\u3044\u30b7\u30b9\u30c6\u30e0\u3060\u3068\u5224\u65ad\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\uff08SPF\/DKIM\/DMARC\uff09\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u304b<\/h3>\n<p>\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u3067\u6b20\u304b\u305b\u306a\u3044\u306e\u304c\u3001<strong>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c<\/strong>\u3078\u306e\u5bfe\u5fdc\u3067\u3059\u3002\u4ee3\u8868\u7684\u306a3\u3064\u306e\u8a8d\u8a3c\u6280\u8853\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<br \/>\n<div class=\"list04\">\n<ul>\n<li><strong>SPF\uff08Sender Policy Framework\uff09<\/strong>\uff1a\u9001\u4fe1\u5143\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092DNS\u306b\u767b\u9332\u3057\u3001\u6b63\u898f\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u9001\u3089\u308c\u305f\u30e1\u30fc\u30eb\u3067\u3042\u308b\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b\u4ed5\u7d44\u307f<\/li>\n<li><strong>DKIM\uff08DomainKeys Identified Mail\uff09<\/strong>\uff1a\u30e1\u30fc\u30eb\u306b\u96fb\u5b50\u7f72\u540d\u3092\u4ed8\u4e0e\u3057\u3001\u767a\u884c\u5143\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u914d\u4fe1\u3055\u308c\u305f\u3053\u3068\u3001\u307e\u305f\u5185\u5bb9\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b\u4ed5\u7d44\u307f<\/li>\n<li><strong>DMARC\uff08Domain-based Message Authentication, Reporting and Conformance\uff09<\/strong>\uff1aSPF\u3068DKIM\u306e\u8a8d\u8a3c\u7d50\u679c\u3092\u3082\u3068\u306b\u3001\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306e\u6271\u3044\uff08\u9694\u96e2\u30fb\u62d2\u5426\u306a\u3069\uff09\u3092\u9001\u4fe1\u5074\u304c\u6307\u5b9a\u3067\u304d\u308b\u4ed5\u7d44\u307f<\/li>\n<\/ul>\n<\/div>\n<p>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u306b\u3064\u3044\u3066\u306f\u3001\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\/gmail-guideline-202402\">\n   <div class=\"blogcard_thumbnail\"><img decoding=\"async\" src=\"https:\/\/blastmail.jp\/blog\/wp-content\/uploads\/2023\/11\/Gmail_guide.png\" alt=\"\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\" width=\"90\" height=\"47\" \/><\/div>\n   <div class=\"blogcard_content\">\n    <div class=\"blogcard_title\">\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<\/div>\n    <div class=\"blogcard_excerpt\">Gmail\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3068\u306f\u3001\u300cGmail\u306b\u30e1\u30fc\u30eb\u3092\u5c4a\u3051\u305f\u3044\u306a\u3089\u3001\u9001\u4fe1\u5074\u306f\u3053\u306e\u30eb\u30fc\u30eb\u3092\u5b88\u3063\u3066\u304f\u3060\u3055\u3044\u300d\u3068Google\u304c\u5b9a\u3081\u305f\u8981\u4ef6\u306e\u3053\u3068\u3067\u3059\u3002\u6b63\u5f0f\u540d\u2026<\/div>\n   <\/div>\n   <div class=\"clear\"><\/div>\n  <\/a>\n  <\/div>\n<h3>\u8aa4\u9001\u4fe1\u3092\u9632\u3050\u6a5f\u80fd\u3092\u5099\u3048\u3066\u3044\u308b\u304b<\/h3>\n<p>\u8aa4\u9001\u4fe1\u3068\u3044\u3046\u30d2\u30e5\u30fc\u30de\u30f3\u30a8\u30e9\u30fc\u3092\u9632\u3050\u306b\u306f\u3001\u4eba\u306e\u6ce8\u610f\u529b\u3060\u3051\u306b\u983c\u3089\u305a\u3001\u4ed5\u7d44\u307f\u3067\u6b62\u3081\u308b\u767a\u60f3\u304c\u91cd\u8981\u3067\u3059\u3002\u9001\u4fe1\u524d\u306b\u4e0a\u9577\u306a\u3069<strong>\u627f\u8a8d\u8005\u306e\u30c1\u30a7\u30c3\u30af\u3092\u7d4c\u306a\u3051\u308c\u3070\u914d\u4fe1\u3067\u304d\u306a\u3044\u627f\u8a8d\u6a5f\u80fd<\/strong>\u304c\u3042\u308b\u3068\u5b89\u5fc3\u3067\u3059\u3002\u30c0\u30d6\u30eb\u30c1\u30a7\u30c3\u30af\u304c\u30b7\u30b9\u30c6\u30e0\u306b\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u308c\u3070\u3001\u5b9b\u5148\u3084\u672c\u6587\u306e\u8aa4\u308a\u3092\u914d\u4fe1\u524d\u306b\u98df\u3044\u6b62\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<h3>\u30e6\u30fc\u30b6\u30fc\u3054\u3068\u306e\u6a29\u9650\u8a2d\u5b9a\u30fb\u30ed\u30b0\u7ba1\u7406\u304c\u3067\u304d\u308b\u304b<\/h3>\n<p>\u300c\u5168\u54e1\u304c\u7ba1\u7406\u8005\u6a29\u9650\u3092\u6301\u3063\u3066\u3044\u308b\u300d\u72b6\u614b\u306f\u3001\u5185\u90e8\u4e0d\u6b63\u3084\u64cd\u4f5c\u30df\u30b9\u306e\u6e29\u5e8a\u3067\u3059\u3002<strong>\u62c5\u5f53\u8005\u3054\u3068\u306b\u64cd\u4f5c\u3067\u304d\u308b\u7bc4\u56f2\u3092\u7d30\u304b\u304f\u8a2d\u5b9a\u3067\u304d\u308b\u6a29\u9650\u7ba1\u7406\u6a5f\u80fd<\/strong>\u304c\u3042\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002\u30e1\u30fc\u30eb\u4f5c\u6210\u8005\u3068\u5b9b\u5148\u7ba1\u7406\u8005\u3092\u5206\u3051\u305f\u308a\u3001\u696d\u52d9\u306b\u5fc5\u8981\u306a\u6a5f\u80fd\u3060\u3051\u3092\u4ed8\u4e0e\u3057\u305f\u308a\u3067\u304d\u308c\u3070\u3001\u5185\u90e8\u8981\u56e0\u306e\u30ea\u30b9\u30af\u3092\u5927\u304d\u304f\u6291\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<h3>\u8106\u5f31\u6027\u8a3a\u65ad\u304c\u5b9a\u671f\u7684\u306b\u884c\u308f\u308c\u3066\u3044\u308b\u304b<\/h3>\n<p>\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5168\u6027\u306f\u3001\u4e00\u5ea6\u69cb\u7bc9\u3059\u308c\u3070\u7d42\u308f\u308a\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u65b0\u305f\u306a\u653b\u6483\u624b\u6cd5\u306f\u6b21\u3005\u3068\u751f\u307e\u308c\u308b\u305f\u3081\u3001<strong>\u63d0\u4f9b\u4e8b\u696d\u8005\u304c\u5b9a\u671f\u7684\u306b\u8106\u5f31\u6027\u8a3a\u65ad\u3092\u5b9f\u65bd\u3057\u3001\u767a\u898b\u3055\u308c\u305f\u554f\u984c\u306b\u7d99\u7d9a\u7684\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u304b<\/strong>\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002\u7b2c\u4e09\u8005\u6a5f\u95a2\u306b\u3088\u308b\u8a3a\u65ad\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306e\u904b\u7528\u4f53\u5236\u304c\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u30b5\u30fc\u30d3\u30b9\u306f\u3001\u4fe1\u983c\u6027\u306e\u5224\u65ad\u6750\u6599\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u30de\u30fc\u30af\u3084ISMS\u3092\u53d6\u5f97\u3057\u3066\u3044\u308b\u304b<\/h3>\n<p>\u500b\u4eba\u60c5\u5831\u3092\u6271\u3046\u4ee5\u4e0a\u3001\u63d0\u4f9b\u4e8b\u696d\u8005\u306e\u60c5\u5831\u7ba1\u7406\u4f53\u5236\u305d\u306e\u3082\u306e\u304c\u554f\u308f\u308c\u307e\u3059\u3002<strong>\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u30de\u30fc\u30af\uff08P\u30de\u30fc\u30af\uff09\u3084ISMS\uff08ISO\/IEC 27001\uff09\u3068\u3044\u3063\u305f\u7b2c\u4e09\u8005\u8a8d\u8a3c<\/strong>\u3092\u53d6\u5f97\u3057\u3066\u3044\u308b\u304b\u306f\u3001\u5ba2\u89b3\u7684\u306a\u4fe1\u983c\u6027\u306e\u6307\u6a19\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u8a8d\u8a3c\u306f\u3001\u7d44\u7e54\u3068\u3057\u3066\u500b\u4eba\u60c5\u5831\u3084\u60c5\u5831\u8cc7\u7523\u3092\u9069\u5207\u306b\u7ba1\u7406\u3059\u308b\u4ed5\u7d44\u307f\u304c\u6574\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<h3>\u5927\u4f01\u696d\u3084\u5b98\u516c\u5e81\u306e\u5c0e\u5165\u5b9f\u7e3e\u304c\u3042\u308b\u304b<\/h3>\n<p><strong>\u5927\u4f01\u696d\u3084\u5b98\u516c\u5e81\u3067\u306e\u5c0e\u5165\u5b9f\u7e3e<\/strong>\u3082\u6709\u529b\u306a\u5224\u65ad\u6750\u6599\u3067\u3059\u3002\u53b3\u683c\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8981\u4ef6\u3092\u6c42\u3081\u3089\u308c\u308b\u7d44\u7e54\u306b\u63a1\u7528\u3055\u308c\u3066\u3044\u308b\u3068\u3044\u3046\u4e8b\u5b9f\u306f\u3001\u305d\u306e\u30b7\u30b9\u30c6\u30e0\u304c\u9ad8\u3044\u5b89\u5168\u57fa\u6e96\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u3053\u3068\u306e\u88cf\u4ed8\u3051\u306b\u306a\u308a\u307e\u3059\u3002\u5c0e\u5165\u793e\u6570\u3084\u63a1\u7528\u696d\u7a2e\u306e\u5e45\u5e83\u3055\u306f\u3001\u30b5\u30fc\u30d3\u30b9\u306e\u4fe1\u983c\u6027\u3092\u6e2c\u308b\u3046\u3048\u3067\u53c2\u8003\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<h3>\u5c0e\u5165\u304b\u3089\u904b\u7528\u307e\u3067\u76f8\u8ac7\u3067\u304d\u308b\u30b5\u30dd\u30fc\u30c8\u4f53\u5236\u304c\u3042\u308b\u304b<\/h3>\n<p>\u96fb\u8a71\u30fb\u30e1\u30fc\u30eb\u30fb\u30c1\u30e3\u30c3\u30c8\u306a\u3069\u81ea\u793e\u306b\u5408\u3063\u305f\u624b\u6bb5\u3067\u9023\u7d61\u3067\u304d\u308b\u304b\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u306f\u65e9\u3044\u304b\u3001\u5c0e\u5165\u6642\u306b\u521d\u671f\u8a2d\u5b9a\u3092\u624b\u4f1d\u3063\u3066\u3082\u3089\u3048\u308b\u304b\u306a\u3069\u3092\u78ba\u8a8d\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u3068\u304f\u306b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u95a2\u308f\u308b\u30c8\u30e9\u30d6\u30eb\u306f\u521d\u52d5\u306e\u65e9\u3055\u304c\u91cd\u8981\u306b\u306a\u308b\u305f\u3081\u3001<strong>\u3044\u3056\u3068\u3044\u3046\u3068\u304d\u306b\u8fc5\u901f\u306b\u5bfe\u5fdc\u3057\u3066\u3082\u3089\u3048\u308b\u4f53\u5236<\/strong>\u304c\u6574\u3063\u3066\u3044\u308b\u304b\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u9078\u3073\u306e\u5927\u5207\u306a\u5224\u65ad\u6750\u6599\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u304a\u3059\u3059\u3081\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u300c\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\u300d<\/h2>\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>\u30d6\u30e9\u30b9\u30c8\u30e1\u30fc\u30eb\uff08blastmail\uff09\u306f\u300115\u5e74\u9023\u7d9a\u3067\u5c0e\u5165\u793e\u6570\u30b7\u30a7\u30a2No.1\uff08\u203b\uff09\u3092\u7372\u5f97\u3057\u3066\u3044\u308b\u65e5\u672c\u6700\u5927\u7d1a\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3067\u3059\u3002\u3042\u3089\u3086\u308b\u30ea\u30b9\u30af\u3092\u60f3\u5b9a\u3057\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3092\u8b1b\u3058\u3066\u304a\u308a\u3001\u5927\u624b\u4f01\u696d\u3084\u81ea\u6cbb\u4f53\u306a\u306927,000\u793e\u3092\u8d85\u3048\u308b\u4f01\u696d\u306b\u5c0e\u5165\u3092\u3044\u305f\u3060\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>\u901a\u4fe1\u6697\u53f7\u5316\uff08SSL\/TLS\u30fbSTARTTLS\uff09<\/strong>\uff1a\u7ba1\u7406\u753b\u9762\u3078\u306e\u30a2\u30af\u30bb\u30b9\u306fSSL\/TLS\u3067\u6697\u53f7\u5316\u3002\u30e1\u30fc\u30eb\u914d\u4fe1\u6642\u306fSTARTTLS\u306b\u5bfe\u5fdc\u3057\u3001\u30b5\u30fc\u30d0\u30fc\u9593\u901a\u4fe1\u3092\u6697\u53f7\u5316\u3002<\/li>\n<li><strong>\u4e0d\u6b63\u30ed\u30b0\u30a4\u30f3\u5bfe\u7b56<\/strong>\uff1aIP\u30a2\u30c9\u30ec\u30b9\u5236\u9650\u6a5f\u80fd\u3092\u642d\u8f09\uff08Standard\u30d7\u30e9\u30f3\u4ee5\u4e0a\uff09\u3002\u8a31\u53efIP\u4ee5\u5916\u304b\u3089\u306e\u7ba1\u7406\u753b\u9762\u30a2\u30af\u30bb\u30b9\u3092\u906e\u65ad\u3002<\/li>\n<li><strong>\u30b5\u30fc\u30d0\u30fc\u30fbDB\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u5bfe\u7b56<\/strong>\uff1a\u4e0d\u6b63\u901a\u4fe1\u306e\u691c\u77e5\u30fb\u906e\u65ad\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306b\u3088\u308b\u4e0d\u8981\u901a\u4fe1\u306e\u906e\u65ad\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3078\u306e\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u3067\u60c5\u5831\u6f0f\u6d29\u30ea\u30b9\u30af\u3092\u4f4e\u6e1b\u3002<\/li>\n<li><strong>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c<\/strong>\uff1aSPF\u30fbDKIM\u30fbDMARC\u306b\u5bfe\u5fdc\u3002<\/li>\n<li><strong>\u30e1\u30fc\u30eb\u627f\u8a8d\u6a5f\u80fd<\/strong>\uff1a\u9001\u4fe1\u524d\u306e\u627f\u8a8d\u30d5\u30ed\u30fc\u3067\u8aa4\u9001\u4fe1\u3092\u9632\u6b62\u3002<\/li>\n<li><strong>\u30e6\u30fc\u30b6\u30fc\u3054\u3068\u306e\u6a29\u9650\u8a2d\u5b9a<\/strong>\uff1a\u62c5\u5f53\u8005\u3054\u3068\u306b\u64cd\u4f5c\u6a29\u9650\u3092\u5272\u308a\u5f53\u3066\u53ef\u80fd\u3002<\/li>\n<li><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8a3a\u65ad<\/strong>\uff1a\u7b2c\u4e09\u8005\u6a5f\u95a2\u306b\u3088\u308b\u8106\u5f31\u6027\u8a3a\u65ad\u3092\u5b9a\u671f\u7684\u306b\u5b9f\u65bd\u3002<\/li>\n<li><strong>\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u30de\u30fc\u30af<\/strong>\uff1a2006\u5e7410\u6708\u306b\u53d6\u5f97\u3002JIS Q 15001\u306b\u57fa\u3065\u304d\u500b\u4eba\u60c5\u5831\u3092\u9069\u5207\u306b\u904b\u7528\u3002<\/li>\n<li><strong>ISMS\u8a8d\u8a3c<\/strong>\uff1a2023\u5e7411\u6708\u306b\u53d6\u5f97\u3002\u60c5\u5831\u8cc7\u7523\u5168\u822c\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u9069\u5207\u306b\u7ba1\u7406\u3059\u308b\u4f53\u5236\u3092\u7d99\u7d9a\u3002<\/li>\n<li><strong>\u30b5\u30dd\u30fc\u30c8\u4f53\u5236<\/strong>\uff1a\u96fb\u8a71\u30fb\u30e1\u30fc\u30eb\u30fb\u30c1\u30e3\u30c3\u30c8\u306b\u52a0\u3048\u3001Pro\u30d7\u30e9\u30f3\u3067\u306f\u5c02\u4efb\u62c5\u5f53\u306b\u3088\u308b\u30b5\u30dd\u30fc\u30c8\u3092\u63d0\u4f9b\u3002<\/li>\n<\/ul>\n<\/div>\n<p>\u5c0e\u5165\u5b9f\u7e3e\u306e\u8c4a\u5bcc\u3055\u3068\u4f4e\u4fa1\u683c\u3092\u4e21\u7acb\u3057\u3066\u304a\u308a\u3001\u521d\u3081\u3066\u30e1\u30eb\u30de\u30ac\u3092\u59cb\u3081\u308b\u4f01\u696d\u304b\u3089\u5927\u898f\u6a21\u914d\u4fe1\u3092\u884c\u3046\u4f01\u696d\u307e\u3067\u3001\u5b89\u5168\u306a\u914d\u4fe1\u74b0\u5883\u3092\u6c42\u3081\u308b\u3042\u3089\u3086\u308b\u30cb\u30fc\u30ba\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002\u307e\u305a\u306f\u7121\u6599\u30c8\u30e9\u30a4\u30a2\u30eb\u3067\u3001\u305d\u306e\u4f7f\u3044\u3084\u3059\u3055\u3068\u64cd\u4f5c\u6027\u3092\u78ba\u304b\u3081\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u516c\u5f0f\u30b5\u30a4\u30c8\uff1a<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><\/p>\n<div class=\"su-button-center\"><a href=\"https:\/\/blastmail.jp\/order\/input\" class=\"su-button su-button-style-flat event_bnr\" style=\"color:#FFFFFF;background-color:#c12620;border-color:#9b1f1a;border-radius:5px\" target=\"_blank\" rel=\"noopener noreferrer\"><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<p>\uff08\u203b\u30df\u30c3\u30afIT\u30ea\u30dd\u30fc\u30c82025\u5e748\u6708\u53f7\u300c\u30af\u30e9\u30a6\u30c9\u578be\u30e1\u30fc\u30eb\u4e00\u6589\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u306e\u5e02\u5834\u52d5\u5411\u3068\u4e2d\u671f\u4e88\u6e2c\uff08\u58f2\u4e0a\u9ad8\/\u30a2\u30af\u30c6\u30a3\u30d6\u6cd5\u4eba\u9867\u5ba2\u6570\uff09\u300d\u3088\u308a\uff09<\/p>\n<h2>\u304a\u3059\u3059\u3081\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u300cblastengine\u300d<\/h2>\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>blastengine\uff08\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\uff09\u306f\u3001\u304a\u5ba2\u69d8\u306e\u30b7\u30b9\u30c6\u30e0\u3068SMTP\u30ea\u30ec\u30fc\u3084API\u3067\u9023\u643a\u3059\u308b\u3053\u3068\u3067\u3001\u4e00\u6589\u914d\u4fe1\u3084\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30e1\u30fc\u30eb\u3092\u7c21\u5358\u306b\u884c\u3048\u308b\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002\u904b\u7528\u30fb\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3092\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u5074\u3067\u884c\u3046\u305f\u3081\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u9762\u5012\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u7ba1\u7406\u304b\u3089\u89e3\u653e\u3057\u3064\u3064\u3001\u9ad8\u3044\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6c34\u6e96\u3092\u7dad\u6301\u3067\u304d\u307e\u3059\u3002<\/p>\n<div class=\"list04\">\n<ul>\n<li><strong>SPF\/DKIM\/DMARC\u5bfe\u5fdc<\/strong>\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><strong>SMTP\u8a8d\u8a3c\u30fbIP\u30a2\u30c9\u30ec\u30b9\u5236\u9650<\/strong>\uff1a\u4e0d\u6b63\u4e2d\u7d99\u3084\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3092\u9632\u304e\u3001\u5b89\u5168\u306a\u914d\u4fe1\u7d4c\u8def\u3092\u78ba\u4fdd<\/li>\n<li><strong>TLS\u5bfe\u5fdc<\/strong>\uff1a\u901a\u4fe1\u3092\u6697\u53f7\u5316\u3057\u3001\u76d7\u8074\u30fb\u6539\u3056\u3093\u306e\u30ea\u30b9\u30af\u3092\u4f4e\u6e1b<\/li>\n<li><strong>IP\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u7ba1\u7406<\/strong>\uff1a\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u5074\u3067\u904b\u7528\u30fb\u7ba1\u7406\u3057\u3001\u5e38\u306b\u9ad8\u3044\u9001\u4fe1\u8005\u8a55\u4fa1\u3092\u7dad\u6301<\/li>\n<\/ul>\n<\/div>\n<p>API\u3084SMTP\u30ea\u30ec\u30fc\u3067\u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\u306b\u7d44\u307f\u8fbc\u3081\u308b\u305f\u3081\u3001\u30b7\u30b9\u30c6\u30e0\u9023\u643a\u3092\u524d\u63d0\u306b\u9ad8\u3044\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u5230\u9054\u7387\u3092\u4e21\u7acb\u3057\u305f\u3044\u4f01\u696d\u306b\u6700\u9069\u3067\u3059\u3002\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u5165\u529b\u306e\u307f\u3067\u7121\u6599\u30c8\u30e9\u30a4\u30a2\u30eb\u304c\u53ef\u80fd\u3067\u3059\u306e\u3067\u3001\u307e\u305a\u306f\u6c17\u8efd\u306b\u304a\u8a66\u3057\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u30d6\u30e9\u30b9\u30c8\u30a8\u30f3\u30b8\u30f3\u516c\u5f0f\u30b5\u30a4\u30c8\uff1a<a href=\"https:\/\/blastengine.jp\/\">https:\/\/blastengine.jp\/<\/a><\/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=\"_blank\" rel=\"noopener noreferrer\"><span style=\"color:#FFFFFF;padding:0px 34px;font-size:25px;line-height:50px;border-color:#d46863;border-radius:5px;text-shadow:none\"> blastengine\u3092\u7121\u6599\u3067\u8a66\u3059 &gt;<\/span><\/a><\/div>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3051\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u306f\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3084\u306a\u308a\u3059\u307e\u3057\u306a\u3069\u306e\u300c\u5916\u90e8\u8981\u56e0\u300d\u3068\u3001\u8aa4\u9001\u4fe1\u3084\u6a29\u9650\u7ba1\u7406\u306e\u4e0d\u5099\u306a\u3069\u306e\u300c\u5185\u90e8\u8981\u56e0\u300d\u306e2\u3064\u306b\u5927\u5225\u3055\u308c\u307e\u3059\u3002\u4e00\u898b\u3059\u308b\u3068\u5bfe\u7b56\u3059\u3079\u304d\u7bc4\u56f2\u306f\u591a\u5c90\u306b\u308f\u305f\u308b\u3088\u3046\u306b\u611f\u3058\u3089\u308c\u307e\u3059\u304c\u3001\u9069\u5207\u306a\u5bfe\u7b56\u3092\u8b1b\u3058\u308b\u3053\u3068\u3067\u3001\u3053\u308c\u3089\u306e\u30ea\u30b9\u30af\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<p>SSL\/TLS\u30fbSTARTTLS\u306b\u3088\u308b\u901a\u4fe1\u306e\u6697\u53f7\u5316\u3001\u4e0d\u6b63\u30ed\u30b0\u30a4\u30f3\u5bfe\u7b56\u3001SPF\/DKIM\/DMARC\u306b\u3088\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3001\u8aa4\u9001\u4fe1\u3092\u9632\u3050\u627f\u8a8d\u6a5f\u80fd\u3001\u6a29\u9650\u30fb\u30ed\u30b0\u7ba1\u7406\u2014\u2014\u3053\u3046\u3057\u305f\u5bfe\u7b56\u304c\u3042\u3089\u304b\u3058\u3081\u5099\u308f\u3063\u305f\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u9078\u3079\u3070\u3001\u5c02\u9580\u77e5\u8b58\u304c\u306a\u304f\u3066\u3082\u3001\u3053\u308c\u3089\u306e\u30ea\u30b9\u30af\u306b\u307e\u3068\u3081\u3066\u5099\u3048\u3089\u308c\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u8106\u5f31\u6027\u8a3a\u65ad\u3084\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u30de\u30fc\u30af\u30fbISMS\u3068\u3044\u3063\u305f\u7b2c\u4e09\u8005\u8a8d\u8a3c\u3001\u30b5\u30dd\u30fc\u30c8\u4f53\u5236\u3084\u5c0e\u5165\u5b9f\u7e3e\u307e\u3067\u78ba\u8a8d\u3057\u3066\u304a\u3051\u3070\u3001\u3088\u308a\u5b89\u5fc3\u3057\u3066\u4efb\u305b\u3089\u308c\u308b\u30b7\u30b9\u30c6\u30e0\u3092\u898b\u6975\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u81ea\u793e\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u306b\u5c11\u3057\u3067\u3082\u4e0d\u5b89\u304c\u3042\u308b\u306a\u3089\u3001\u672c\u8a18\u4e8b\u306e\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8\u3092\u624b\u304c\u304b\u308a\u306b\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u304c\u6a19\u6e96\u3067\u5099\u308f\u3063\u305f\u30b7\u30b9\u30c6\u30e0\u3092\u9078\u3093\u3067\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u5b89\u5168\u306a\u914d\u4fe1\u74b0\u5883\u306f\u3001\u9867\u5ba2\u304b\u3089\u306e\u4fe1\u983c\u3092\u5b88\u308a\u3001\u30d3\u30b8\u30cd\u30b9\u3092\u7d99\u7d9a\u7684\u306b\u6210\u9577\u3055\u305b\u308b\u305f\u3081\u306e\u571f\u53f0\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<div class=\"blog-faq\"><h2 class=\"blog-faq__title\">FAQ<\/h2><dl class=\"blog-faq__list\">\n<dt class=\"blog-faq__question\">\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u306b\u306f\u3001\u3069\u3093\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u5927\u304d\u304f<strong>\u300c\u5916\u90e8\u304b\u3089\u306e\u653b\u6483\u300d<\/strong>\u3068<strong>\u300c\u5185\u90e8\u306e\u30df\u30b9\u30fb\u4e0d\u6b63\u306b\u3088\u308b\u6d41\u51fa\u300d<\/strong>\u306e2\u3064\u306b\u5206\u3051\u3089\u308c\u307e\u3059\u3002\u5916\u90e8\u8981\u56e0\u306f\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u306b\u3088\u308b\u30b7\u30b9\u30c6\u30e0\u3078\u306e\u4fb5\u5165\u3084\u9867\u5ba2\u60c5\u5831\u306e\u7a83\u53d6\u3001\u5185\u90e8\u8981\u56e0\u306f\u62c5\u5f53\u8005\u306e\u64cd\u4f5c\u30df\u30b9\u306b\u3088\u308b\u8aa4\u9001\u4fe1\u3084\u3001\u6a29\u9650\u7ba1\u7406\u30fb\u9000\u8077\u8005\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u4e0d\u5099\u306b\u3088\u308b\u60c5\u5831\u6d41\u51fa\u304c\u4ee3\u8868\u4f8b\u3067\u3059\u3002\u3069\u3061\u3089\u304b\u4e00\u65b9\u3067\u306f\u306a\u304f\u3001\u4e21\u9762\u3078\u306e\u5099\u3048\u304c\u5fc5\u8981\u3067\u3059\u3002<\/dd>\n<dt class=\"blog-faq__question\">\u5916\u90e8\u304b\u3089\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3092\u9632\u3050\u306b\u306f\u3001\u3069\u3093\u306a\u6a5f\u80fd\u3092\u78ba\u8a8d\u3059\u3079\u304d\u3067\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u4e0d\u6b63\u30ed\u30b0\u30a4\u30f3\u3092\u9632\u3050<strong>IP\u30a2\u30c9\u30ec\u30b9\u5236\u9650<\/strong>\u3084<strong>2\u6bb5\u968e\u8a8d\u8a3c<\/strong>\u3001\u901a\u4fe1\u3092\u6697\u53f7\u5316\u3059\u308b<strong>SSL\/TLS<\/strong>\u3078\u306e\u5bfe\u5fdc\u304c\u307e\u305a\u91cd\u8981\u3067\u3059\u3002\u3042\u308f\u305b\u3066\u3001\u63d0\u4f9b\u4e8b\u696d\u8005\u304c\u30b7\u30b9\u30c6\u30e0\u3092\u76e3\u8996\u3057\u3001<strong>\u4e0d\u5be9\u306a\u30a2\u30af\u30bb\u30b9\u3092\u906e\u65ad\u3059\u308b<\/strong>\u904b\u7528\u3092\u3057\u3066\u3044\u308b\u304b\u3001\u7b2c\u4e09\u8005\u6a5f\u95a2\u306b\u3088\u308b<strong>\u8106\u5f31\u6027\u8a3a\u65ad<\/strong>\u3092\u884c\u3063\u3066\u3044\u308b\u304b\u3082\u78ba\u8a8d\u3059\u308b\u3068\u3001\u3088\u308a\u5916\u90e8\u653b\u6483\u306b\u5f37\u3044\u30b7\u30b9\u30c6\u30e0\u3092\u9078\u3079\u307e\u3059\u3002<\/dd>\n<dt class=\"blog-faq__question\">\u793e\u5185\u306e\u4eba\u70ba\u7684\u306a\u30df\u30b9\u306b\u3088\u308b\u60c5\u5831\u6f0f\u6d29\u306f\u3001\u3069\u3046\u9632\u3052\u307e\u3059\u304b\uff1f<\/dt><dd class=\"blog-faq__answer\">A\uff1a\u4eba\u306e\u6ce8\u610f\u529b\u3060\u3051\u306b\u983c\u3089\u305a\u3001\u4ed5\u7d44\u307f\u3067\u9632\u3050\u3053\u3068\u304c\u6709\u52b9\u3067\u3059\u3002\u9001\u4fe1\u524d\u306b\u627f\u8a8d\u8005\u306e\u30c1\u30a7\u30c3\u30af\u3092\u5fc5\u9808\u3068\u3059\u308b<strong>\u627f\u8a8d\u6a5f\u80fd<\/strong>\u304c\u3042\u308c\u3070\u8aa4\u9001\u4fe1\u3092\u9632\u3052\u307e\u3059\u3057\u3001\u62c5\u5f53\u8005\u3054\u3068\u306b<strong>\u64cd\u4f5c\u6a29\u9650\u3092\u8a2d\u5b9a\u3057\u64cd\u4f5c\u30ed\u30b0\u3092\u6b8b\u305b\u308b\u6a5f\u80fd<\/strong>\u304c\u3042\u308c\u3070\u3001\u6a29\u9650\u7ba1\u7406\u306e\u4e0d\u5099\u3084\u5185\u90e8\u4e0d\u6b63\u306e\u30ea\u30b9\u30af\u3092\u6291\u3048\u3089\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u304c\u6a19\u6e96\u3067\u5099\u308f\u3063\u305f\u30b7\u30b9\u30c6\u30e0\u3092\u9078\u3076\u3068\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/dd>\n<dt 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27001\uff09<\/strong>\u3068\u3044\u3063\u305f\u8a8d\u8a3c\u3092\u53d6\u5f97\u3057\u3066\u3044\u308b\u304b\u304c\u5ba2\u89b3\u7684\u306a\u6307\u6a19\u306b\u306a\u308a\u307e\u3059\u3002\u3042\u308f\u305b\u3066\u3001<strong>\u5927\u4f01\u696d\u3084\u5b98\u516c\u5e81\u3067\u306e\u5c0e\u5165\u5b9f\u7e3e<\/strong>\u3084\u3001\u56f0\u3063\u305f\u3068\u304d\u306b\u76f8\u8ac7\u3067\u304d\u308b<strong>\u30b5\u30dd\u30fc\u30c8\u4f53\u5236<\/strong>\u3082\u3001\u4fe1\u983c\u6027\u3092\u5224\u65ad\u3059\u308b\u6750\u6599\u306b\u306a\u308a\u307e\u3059\u3002<\/dd>\n<\/dl><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3084\u6c0f\u540d\u3068\u3044\u3063\u305f\u5927\u91cf\u306e\u500b\u4eba\u60c5\u5831\u3092\u53d6\u308a\u6271\u3046\u30c4\u30fc\u30eb\u3067\u3059\u3002\u30e1\u30eb\u30de\u30ac\u3084\u304a\u77e5&#8230;<\/p>\n","protected":false},"author":19,"featured_media":22316,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-22312","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mail-delivery"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/blastmail.jp\/blog\/wp-json\/wp\/v2\/posts\/22312","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blastmail.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blastmail.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blastmail.jp\/blog\/wp-json\/wp\/v2\/users\/19"}],"replies":[{"embeddable":true,"href":"https:\/\/blastmail.jp\/blog\/wp-json\/wp\/v2\/comments?post=22312"}],"version-history":[{"count":32,"href":"https:\/\/blastmail.jp\/blog\/wp-json\/wp\/v2\/posts\/22312\/revisions"}],"predecessor-version":[{"id":22365,"href":"https:\/\/blastmail.jp\/blog\/wp-json\/wp\/v2\/posts\/22312\/revisions\/22365"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blastmail.jp\/blog\/wp-json\/wp\/v2\/media\/22316"}],"wp:attachment":[{"href":"https:\/\/blastmail.jp\/blog\/wp-json\/wp\/v2\/media?parent=22312"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blastmail.jp\/blog\/wp-json\/wp\/v2\/categories?post=22312"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blastmail.jp\/blog\/wp-json\/wp\/v2\/tags?post=22312"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}