{"id":10265,"date":"2023-06-08T07:00:54","date_gmt":"2023-06-07T22:00:54","guid":{"rendered":"https:\/\/frauddetection.cacco.co.jp\/media\/?p=10265"},"modified":"2026-03-31T21:26:13","modified_gmt":"2026-03-31T12:26:13","slug":"dmarc%e3%81%ae%e8%a8%ad%e5%ae%9a%e6%96%b9%e6%b3%95%e3%82%924%e6%89%8b%e9%a0%86%e3%81%a7%e7%b4%b9%e4%bb%8b%ef%bc%81%e3%83%ac%e3%82%b3%e3%83%bc%e3%83%89%e3%81%ae%e5%86%85%e5%ae%b9%e3%82%82%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/frauddetection.cacco.co.jp\/media\/fraud-access\/10265\/","title":{"rendered":"DMARC\u306e\u8a2d\u5b9a\u65b9\u6cd5\u30924\u624b\u9806\u3067\u7d39\u4ecb\uff01\u30ec\u30b3\u30fc\u30c9\u306e\u5185\u5bb9\u3082\u89e3\u8aac"},"content":{"rendered":"<div class=\"tcdce-body\"><p>DMARC\u306f\u3001<strong>\u300c\u3053\u306e\u30e1\u30fc\u30eb\u306f\u9593\u9055\u3044\u306a\u304f\u79c1\u304c\u9001\u4fe1\u3057\u305f\u3082\u306e\u3067\u3059\u300d\u3068\u53d7\u4fe1\u5074\u306b\u4f1d\u3048\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u6280\u8853<\/strong>\u3067\u3059\u3002<\/p>\n<p>DMARC\u3092\u5229\u7528\u3059\u308b\u3068\u3001\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u8005\u306f\u81ea\u793e\u30d6\u30e9\u30f3\u30c9\u306e\u4fdd\u8b77\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001<\/p>\n<ol>\n<li>DMARC\u30ec\u30b3\u30fc\u30c9\u306e\u8a18\u8f09\u5185\u5bb9<\/li>\n<li>DMARC\u306e\u8a2d\u5b9a\u65b9\u6cd5<\/li>\n<li>DMARC\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5<\/li>\n<li>DMARC\u8a2d\u5b9a\u6642\u306b\u6c17\u3092\u3064\u3051\u305f\u3044\u3053\u3068<\/li>\n<\/ol>\n<p>\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<div class=\"cardlink\">\r\n<div class=\"cardlink_thumbnail\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3573\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2021\/12\/P9171212-1024x1024.jpg\" alt=\"\" width=\"113\" height=\"113\" \/><noscript><img src='https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2020\/03\/aoki.png' alt='\u304b\u3063\u3053\u682a\u5f0f\u4f1a\u793e\u3000O-PLUX\u4e8b\u696d\u90e8\u3000\u4e8b\u696d\u90e8\u9577\u3000\u5c0f\u91ce\u702c \u307e\u3044' width=120 height=120 \/><\/noscript><\/div>\r\n<div class=\"cardlink_content\"><span class=\"timestamp\">\u8a18\u4e8b\u76e3\u4fee<\/span>\r\n<div class=\"cardlink_title\"><strong>\u304b\u3063\u3053\u682a\u5f0f\u4f1a\u793e O-PLUX\u4e8b\u696d\u90e8<\/strong><\/div>\r\n<div class=\"cardlink_title\"><strong>\u4e8b\u696d\u90e8\u9577\u3000\u5c0f\u91ce\u702c \u307e\u3044<\/strong><\/div>\r\n<div class=\"cardlink_excerpt\">2018\u5e74\u3088\u308a\u304b\u3063\u3053\u682a\u5f0f\u4f1a\u793e\u306b\u5165\u793e\u3002\u4e0d\u6b63\u691c\u77e5\u30b5\u30fc\u30d3\u30b9\u300cO-PLUX\u300d\u306e\u30bb\u30fc\u30eb\u30b9&amp;\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u90e8\u9580\u306b\u3066\u6226\u7565\u7acb\u6848\u3084\u3001\u65b0\u898f\u52a0\u76df\u5e97\u958b\u62d3\u306b\u5f93\u4e8b\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u898f\u6a21\u3084\u5546\u6750\u306b\u95a2\u308f\u3089\u305a\u591a\u6570\u306eEC\u30b5\u30a4\u30c8\u3067\u4e0d\u6b63\u6ce8\u6587\u524a\u6e1b\u306e\u5b9f\u7e3e\u3092\u4e0a\u3052\u4e0d\u6b63\u524a\u6e1b\u30fb\u64b2\u6ec5\u306b\u53d6\u308a\u7d44\u3093\u3067\u3044\u308b\u3002<\/div>\r\n<\/div>\r\n<\/div>\n<p>\u306a\u304a\u3001DMARC\u306e\u4ed5\u7d44\u307f\u3084\u30e1\u30ea\u30c3\u30c8\u30fb\u30c7\u30e1\u30ea\u30c3\u30c8\u306b\u3064\u3044\u3066\u306f\u6b21\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u305c\u3072\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<div class=\"cardlink\"><a href=\"https:\/\/frauddetection.cacco.co.jp\/media\/knowhow\/8609\/\" target=\"_blank\"><div class=\"cardlink_thumbnail\"><img src='https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/03\/media-230303-10-120x120.jpeg' alt='DMARC\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u3084\u30e1\u30ea\u30c3\u30c8\u30fb\u30c7\u30e1\u30ea\u30c3\u30c8\u3001\u8a2d\u5b9a\u65b9\u6cd5\u3092\u89e3\u8aac' width=120 height=120 \/><\/a><\/div><div class=\"cardlink_content\"><span class=\"timestamp\">2023.03.13<\/span><div class=\"cardlink_title\"><a href=\"https:\/\/frauddetection.cacco.co.jp\/media\/knowhow\/8609\/\" target=\"_blank\">DMARC\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u3084\u30e1\u30ea\u30c3\u30c8\u30fb\u30c7\u30e1\u30ea\u30c3\u30c8\u3001\u8a2d\u5b9a\u65b9\u6cd5\u3092\u89e3\u8aac <\/a><\/div><div class=\"cardlink_excerpt\">DMARC\u3068\u306f\u3001\u306a\u308a\u3059\u307e\u3057\u3084\u30e1\u30fc\u30eb\u6539\u3056\u3093\u306a\u3069\u306e\u300c\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u300d\u306b\u6709\u52b9\u306a\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3067\u3059\u3002\r\n\r\n\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306b\u306f\u300cSPF\u300d\u3084\u300cDKIM\u300d\u306a\u3069\u3082\u3042\u308a\u307e\u3059\u304c\u3001DMARC\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3088\u308a\u5f37\u529b\u306a\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u304c\u3067\u304d\u307e\u3059\u3002\r\n\r\n\u672c\u8a18\u4e8b\u3067\u306f\u3001\r\n\r\n ...<\/div><\/div><div class=\"cardlink_footer\"><\/div><\/div>\n<p style=\"text-align: center;\"><strong>\uff3c\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u306b\u5fc5\u8981\u306aDMARC\u306b\u3064\u3044\u3066\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\uff0f<a href=\"https:\/\/frauddetection.cacco.co.jp\/o-motion\/download2\/dmarc_point\/?ref_type=media_\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-16012\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/06\/CV\u30d0\u30ca\u30fc.png\" alt=\"\" width=\"700\" height=\"210\" srcset=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/06\/CV\u30d0\u30ca\u30fc.png 700w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/06\/CV\u30d0\u30ca\u30fc-300x90.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><\/strong><\/p>\n<h2>DMARC\u30ec\u30b3\u30fc\u30c9\u306b\u66f8\u304b\u308c\u3066\u3044\u308b\u5185\u5bb9\u3068\u306f<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-10292\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-8.jpeg\" alt=\"\" width=\"1200\" height=\"635\" srcset=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-8.jpeg 1200w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-8-300x159.jpeg 300w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-8-1024x542.jpeg 1024w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-8-768x406.jpeg 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p>DMARC\u30ec\u30b3\u30fc\u30c9\u306f\u3001<strong>DMARC\u30dd\u30ea\u30b7\u30fc\u3092TXT\u30ec\u30b3\u30fc\u30c9\u306b\u8a18\u8f09\u3057\u305f\u3082\u306e<\/strong>\u3067\u3059\u3002<\/p>\n<p>DMARC\u30ec\u30b3\u30fc\u30c9\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u5185\u5bb9\u304c\u66f8\u304b\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<div class=\"s_table\"><table>\n<tbody>\n<tr>\n<td>\u300cp\u300d<\/td>\n<td>\n<ul>\n<li>\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u51e6\u7406\u30dd\u30ea\u30b7\u30fc\u3092\u5ba3\u8a00\u3059\u308b<\/li>\n<li>\u8a2d\u5b9a\u3067\u304d\u308b\u306e\u306f\u6b21\u306e3\u3064\n<ul>\n<li>\u300cnone\u300d\u2026\u4f55\u3082\u6307\u5b9a\u3057\u306a\u3044\uff08\u51e6\u7406\u65b9\u6cd5\u3092\u53d7\u4fe1\u8005\u5074\u306b\u4efb\u305b\u308b\uff09<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u203b\u300cnone\u300d\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u3001\u9001\u4fe1\u8005\u5074\u306f\u51e6\u7406\u65b9\u6cd5\u3092\u6307\u5b9a\u3057\u306a\u3044\u304c\u3001DMARC\u306e\u7d71\u8a08\u60c5\u5831\u3084\u30a8\u30e9\u30fc\u60c5\u5831\u304c\u5f97\u3089\u308c\u308b\u306e\u3067\u8a2d\u5b9a\u3059\u308b\u610f\u5473\u306f\u3042\u308b<\/p>\n<ul>\n<li>\u300cquarantine\u300d\u2026\u9694\u96e2\u3059\u308b\uff08\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306a\u3069\u5225\u306e\u5834\u6240\u3067\u53d7\u4fe1\u3059\u308b\uff09<\/li>\n<li>\u300creject\u300d\u2026\u53d7\u4fe1\u62d2\u5426\uff08\u30e1\u30fc\u30eb\u3092\u53d7\u3051\u53d6\u3089\u305a\u306b\u7834\u68c4\u3059\u308b\uff09<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr>\n<td>\u300crua\u300d<\/td>\n<td>\n<ul>\n<li>DMARC\u306e\u96c6\u8a08\u30ec\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u53d6\u308b\u30a2\u30c9\u30ec\u30b9<\/li>\n<li>\u5931\u6557\u306e\u8a73\u7d30\u306f\u308f\u304b\u3089\u306a\u3044<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr>\n<td>\u300cruf\u300d<\/td>\n<td>\n<ul>\n<li>DMARC\u306e\u8a8d\u8a3c\u30ec\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u53d6\u308b\u30a2\u30c9\u30ec\u30b9<\/li>\n<li>\u5931\u6557\u306e\u8a73\u7d30\u304c\u308f\u304b\u308b<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p>DMARC\u30ec\u30b3\u30fc\u30c9\u3092DNS\u30b5\u30fc\u30d0\u30fc\uff08\u203b\uff09\u306b\u767b\u9332\u3059\u308b\u3068\u3001DMARC\u304c\u4f7f\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u203b\u30c9\u30e1\u30a4\u30f3\u540d\u3068IP\u30a2\u30c9\u30ec\u30b9\u3092\u7d10\u3065\u3051\u3066\u5909\u63db\u3059\u308b\u30b7\u30b9\u30c6\u30e0\u306e\u3053\u3068<\/p>\n<h2>DMARC\u306e\u8a2d\u5b9a\u65b9\u6cd5\u30924\u3064\u306e\u624b\u9806\u3067\u7d39\u4ecb<\/h2>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-10277\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-3.jpeg\" alt=\"\" width=\"1200\" height=\"800\" srcset=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-3.jpeg 1200w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-3-300x200.jpeg 300w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-3-1024x683.jpeg 1024w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-3-768x512.jpeg 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p>DMARC\u691c\u8a3c\u3092\u5b9f\u65bd\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u8a2d\u5b9a\u65b9\u6cd5\u3092\u30014\u3064\u306e\u624b\u9806\u3067\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li>SPF\u3092\u8a2d\u5b9a\u3059\u308b<\/li>\n<li>DKIM\u3092\u8a2d\u5b9a\u3059\u308b<\/li>\n<li>\u96fb\u5b50\u7f72\u540d\u3092\u4f5c\u6210\u3059\u308b<\/li>\n<li>DMARC\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b<\/li>\n<\/ol>\n<p>\u624b\u9806\u3092\u9593\u9055\u3048\u3066\u3057\u307e\u3046\u3068DMARC\u3092\u6b63\u3057\u304f\u8a2d\u5b9a\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>1\u3064\u305a\u3064\u78ba\u5b9f\u306b\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u3010\u624b\u98061\u3011SPF\u3092\u8a2d\u5b9a\u3059\u308b<\/h3>\n<p>DMARC\u3092\u5229\u7528\u3059\u308b\u305f\u3081\u306e\u6700\u521d\u306e\u624b\u9806\u3068\u3057\u3066\u3001SPF\u306e\u8a2d\u5b9a\u3092\u304a\u3053\u306a\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306f\u3001<strong>\u9001\u4fe1\u5074\u306eDNS\u306bSPF\u30ec\u30b3\u30fc\u30c9\u3092\u767b\u9332\u3057\u516c\u958b\u3059\u308b<\/strong>\u3053\u3068\u3067\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a18\u8f09\u4f8b\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-10284\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-10.png\" alt=\"\" width=\"1200\" height=\"249\" srcset=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-10.png 1200w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-10-300x62.png 300w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-10-1024x212.png 1024w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-10-768x159.png 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p style=\"text-align: right;\"><span style=\"font-size: 10pt;\">\u203b\u5f15\u7528\uff1a<a href=\"https:\/\/www.dekyo.or.jp\/soudan\/data\/anti_spam\/meiwakumanual3\/manual_3rd_edition.pdf\" target=\"_blank\" rel=\"noopener\">\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u63a8\u9032\u5354\u8b70\u4f1a<\/a><\/span><\/p>\n<p style=\"text-align: left;\">SPF\u30ec\u30b3\u30fc\u30c9\u306f\u3001TXT\u30d5\u30a1\u30a4\u30eb\u3067\u767b\u9332\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u3010\u624b\u98062\u3011DKIM\u3092\u8a2d\u5b9a\u3059\u308b<\/h3>\n<p style=\"text-align: left;\">SPF\u306e\u8a2d\u5b9a\u304c\u3067\u304d\u305f\u3089\u3001\u6b21\u306bDKIM\u306e\u8a2d\u5b9a\u3092\u304a\u3053\u306a\u3044\u307e\u3059\u3002<\/p>\n<p style=\"text-align: left;\">DKIM\u306f\u516c\u958b\u9375\u6697\u53f7\u65b9\u5f0f\u3092\u7528\u3044\u305f\u8a8d\u8a3c\u65b9\u5f0f\u306e\u305f\u3081\u3001<strong>\u9001\u4fe1\u5074\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3067\u4f7f\u7528\u3059\u308b\u305f\u3081\u306e\u79d8\u5bc6\u9375\u3068\u516c\u958b\u9375\u3092\u30da\u30a2\u3067\u7528\u610f\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093<\/strong>\u3002<\/p>\n<p style=\"text-align: left;\">\u9375\u304c\u7528\u610f\u3067\u304d\u305f\u3089\u3001DNS\u30b5\u30fc\u30d0\u30fc\u306b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u516c\u958b\u9375\u306e\u60c5\u5831\u3092TXT\u30ec\u30b3\u30fc\u30c9\u3067\u516c\u958b\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-10286\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-12.png\" alt=\"\" width=\"1200\" height=\"147\" srcset=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-12.png 1200w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-12-300x37.png 300w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-12-1024x125.png 1024w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-12-768x94.png 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p style=\"text-align: right;\"><span style=\"font-size: 10pt;\">\u203b\u5f15\u7528\uff1a<a href=\"https:\/\/www.dekyo.or.jp\/soudan\/data\/anti_spam\/meiwakumanual3\/manual_3rd_edition.pdf\" target=\"_blank\" rel=\"noopener\">\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u63a8\u9032\u5354\u8b70\u4f1a<\/a><\/span><\/p>\n<p style=\"text-align: left;\">\u3053\u306e\u3068\u304d\u3001\u300c._domainkey\u30e9\u30d9\u30eb\u300d\u306f\u56fa\u5b9a\u306e\u6587\u5b57\u5217\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p style=\"text-align: left;\">\u307e\u305f\u3001<strong>1,024bit\u3088\u308a\u77ed\u3044\u9577\u3055\u306e\u9375\u306f\u89e3\u8aad\u3055\u308c\u308b\u30ea\u30b9\u30af\u304c\u9ad8\u3044<\/strong>\u305f\u3081\u3001\u9375\u306e\u9577\u3055\u306f\u5fc5\u305a1,024bit\u4ee5\u4e0a\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p style=\"text-align: left;\">\u516c\u958b\u9375\u306e\u60c5\u5831\u304c\u767b\u9332\u3067\u304d\u305f\u3089\u3001DKIM\u30ec\u30b3\u30fc\u30c9\u306e\u8a18\u8ff0\u3092\u3057\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-10287\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-13.png\" alt=\"\" width=\"1200\" height=\"155\" srcset=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-13.png 1200w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-13-300x39.png 300w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-13-1024x132.png 1024w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-13-768x99.png 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p style=\"text-align: left;\">\u203b\u30c9\u30e1\u30a4\u30f3\u540d\uff1dexample.exe\u3001\u30bb\u30ec\u30af\u30bf\u540d\uff1dsls<\/p>\n<p style=\"text-align: right;\"><span style=\"font-size: 10pt;\">\u203b\u5f15\u7528\uff1a<a href=\"https:\/\/www.dekyo.or.jp\/soudan\/data\/anti_spam\/meiwakumanual3\/manual_3rd_edition.pdf\" target=\"_blank\" rel=\"noopener\">\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u63a8\u9032\u5354\u8b70\u4f1a<\/a><\/span><\/p>\n<p style=\"text-align: left;\">\u516c\u958b\u9375\u306e\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u5404\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u300c\u30bf\u30b0\u540d\uff1d\u30bf\u30b0\u5024\u300d\u306e\u30bf\u30b0\u5f62\u5f0f\u3067\u30bb\u30df\u30b3\u30ed\u30f3\uff08\uff1b\uff09\u3092\u7528\u3044\u3066\u5217\u6319\u3057\u307e\u3059\u3002<\/p>\n<p style=\"text-align: left;\">DKIM\u30ec\u30b3\u30fc\u30c9\u306e\u5fc5\u9808\u30bf\u30b0\u306f\u516c\u958b\u9375\u30c7\u30fc\u30bf\u306e\u300cp\u300d\u306e\u307f\u3067\u3059\u304c\u3001\u4ed6\u306etxt rr\u3092\u5229\u7528\u3057\u305fDNS\u30ec\u30b3\u30fc\u30c9\u3068\u533a\u5225\u3059\u308b\u305f\u3081\u306b\u3082\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7\u300cv\u300d\u306f\u8a2d\u5b9a\u3057\u305f\u307b\u3046\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<h3>\u3010\u624b\u98063\u3011\u96fb\u5b50\u7f72\u540d\u3092\u4f5c\u6210\u3059\u308b<\/h3>\n<p style=\"text-align: left;\">SPF\u30fbDKIM\u306e\u8a2d\u5b9a\u304c\u3067\u304d\u305f\u3089\u3001<strong>\u9001\u4fe1\u5074\u3067\u30e1\u30fc\u30eb\u672c\u4f53\uff08\u30d8\u30c3\u30c0\u304a\u3088\u3073\u30e1\u30fc\u30eb\u672c\u6587\u306e\u5185\u5bb9\uff09\u3092\u5143\u306b\u96fb\u5b50\u7f72\u540d\u3092\u4f5c\u6210<\/strong>\u3057\u307e\u3059\u3002<\/p>\n<p style=\"text-align: left;\">\u4f5c\u6210\u3057\u305f\u96fb\u5b50\u7f72\u540d\u306e\u60c5\u5831\u306f\u300cDKIM-Signature\u300d\u30d8\u30c3\u30c0\u3068\u3057\u3066\u4ed8\u4e0e\u3057\u307e\u3059\u3002<\/p>\n<p style=\"text-align: left;\">\u305d\u306e\u3042\u3068\u306b\u3001\u9001\u4fe1\u5074\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306b\u3066\u6b21\u306e\u624b\u9806\u3067\u96fb\u5b50\u7f72\u540d\u3092\u4f5c\u6210\u3057\u3066DKIM-Signature\u30d8\u30c3\u30c0\u3092\u30e1\u30fc\u30eb\u306b\u8ffd\u52a0\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<div class=\"well2\">\n<p>\u3010DMARC\u8a2d\u5b9a\u306e\u305f\u3081\u306e\u96fb\u5b50\u7f72\u540d\u4f5c\u6210\u624b\u9806\u3011<\/p>\n<ol>\n<li>\u96fb\u5b50\u7f72\u540d\u3092\u4f5c\u6210\u3059\u308b\u5bfe\u8c61\u306e\u30e1\u30fc\u30eb\u304b\u78ba\u8a8d<\/li>\n<li>\u96fb\u5b50\u7f72\u540d\u3092\u4f5c\u6210\u3059\u308b\u5bfe\u8c61\u306e\u30d8\u30c3\u30c0\u3092\u6c7a\u5b9a\u3057\u3001h\u30bf\u30b0\u306b\u5217\u6319<\/li>\n<li>\u30e1\u30fc\u30eb\u672c\u6587\u306e\u5185\u5bb9\u304b\u30891\u30bf\u30b0\u306b\u6307\u5b9a\u3057\u305f\u9577\u3055\u3092\u53d6\u308a\u51fa\u3057\u3001\u6b63\u898f\u5316\u51e6\u7406\u3092\u5b9f\u65bd<\/li>\n<li>\u5bfe\u8c61\u3068\u306a\u308b\u30d8\u30c3\u30c0\u3001\u6b63\u898f\u5316\u3057\u305f\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u3001\u3053\u308c\u304b\u3089\u8ffd\u52a0\u3059\u308bDKIM-Signature\u30d8\u30c3\u30c0\u306e\u96fb\u5b50\u7f72\u540d\u306e\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u9664\u3044\u305f\u90e8\u5206\u3092\u7e4b\u3052\u305f\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u3001\u30cf\u30c3\u30b7\u30e5\u3092\u4f5c\u6210<\/li>\n<li>\u30cf\u30c3\u30b7\u30e5\u306b\u5bfe\u3059\u308b\u96fb\u5b50\u4f59\u547d\u3092\u4f5c\u6210\u3057\u3001DKIM-Signature\u30d8\u30c3\u30c0\u306eb\u30bf\u30b0\u306e\u5024\u3068\u3057\u3066\u633f\u5165\u3057\u305f\u3082\u306e\u306b\u3001DKIM-Signature\u81ea\u4f53\u3092\u5bfe\u8c61\u306e\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u306b\u8ffd\u52a0<\/li>\n<\/ol>\n<\/div>\n<p>\u96fb\u5b50\u7f72\u540d\u306e\u5bfe\u8c61\u3068\u3059\u3079\u304d\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u306f\u300cFrom\u300d\u30d8\u30c3\u30c0\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u6b21\u306e\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u3082\u30e1\u30fc\u30eb\u5185\u5bb9\u306b\u95a2\u308f\u308b\u4f8b\u3068\u3057\u3066\u6319\u3052\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-10288\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-14.png\" alt=\"\" width=\"1200\" height=\"174\" srcset=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-14.png 1200w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-14-300x44.png 300w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-14-1024x148.png 1024w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-14-768x111.png 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p style=\"text-align: right;\"><span style=\"font-size: 10pt;\">\u203b\u5f15\u7528\uff1a<a href=\"https:\/\/www.dekyo.or.jp\/soudan\/data\/anti_spam\/meiwakumanual3\/manual_3rd_edition.pdf\" target=\"_blank\" rel=\"noopener\">\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u63a8\u9032\u5354\u8b70\u4f1a<\/a><\/span><\/p>\n<p>\u4e00\u65b9\u3067\u3001\u6b21\u306e\u30d8\u30c3\u30c0\u306f\u300c\u8907\u6570\u5b58\u5728\u3059\u308b\u300d\u300c\u30e1\u30fc\u30eb\u914d\u4fe1\u4e2d\u306b\u5909\u66f4\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u300d\u305f\u3081\u3001\u96fb\u5b50\u7f72\u540d\u306e\u5bfe\u8c61\u304b\u3089\u9664\u5916\u3057\u305f\u307b\u3046\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-10289\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-15.png\" alt=\"\" width=\"1200\" height=\"104\" srcset=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-15.png 1200w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-15-300x26.png 300w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-15-1024x89.png 1024w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-15-768x67.png 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p style=\"text-align: right;\"><span style=\"font-size: 10pt;\">\u203b\u5f15\u7528\uff1a<a href=\"https:\/\/www.dekyo.or.jp\/soudan\/data\/anti_spam\/meiwakumanual3\/manual_3rd_edition.pdf\" target=\"_blank\" rel=\"noopener\">\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u63a8\u9032\u5354\u8b70\u4f1a<\/a><\/span><\/p>\n<h3>\u3010\u624b\u98064\u3011DMARC\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b<\/h3>\n<p>SPF\u30fbDKIM\u30fb\u96fb\u5b50\u7f72\u540d\u306e\u8a2d\u5b9a\u304c\u3059\u3079\u3066\u7d42\u4e86\u3057\u305f\u3089\u3001<strong>DMARC\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a<\/strong>\u3057\u307e\u3059\u3002<\/p>\n<p>DMARC\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u624b\u9806\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<div class=\"well2\">\n<p>\u3010DMARC\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u624b\u9806\u3011<\/p>\n<ol>\n<li>\u5148\u982d\u306e\u300c_dmarc.\u300d\u306e\u5f8c\u306b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u5165\u529b<\/li>\n<li>\u300cp=\u300d\u306e\u90e8\u5206\u306b\u3001\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u6642\u306e\u30dd\u30ea\u30b7\u30fc\u3092\u8a2d\u5b9a\n<ol>\n<li>\u300cnone\uff08\u4f55\u3082\u6307\u5b9a\u3057\u306a\u3044\uff09\u300d<\/li>\n<li>\u300cquarantine\uff08\u9694\u96e2\uff09\u300d<\/li>\n<li>\u300creject\uff08\u53d7\u4fe1\u62d2\u5426\uff09\u300d<\/li>\n<\/ol>\n<\/li>\n<li>\u300crua=\u300d\u306e\u90e8\u5206\u306b\u3001\u96c6\u7d04\u30ec\u30dd\u30fc\u30c8\u3092\u53d7\u4fe1\u3059\u308b\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u5165\u529b<\/li>\n<\/ol>\n<\/div>\n<p>\u3053\u306e\u624b\u9806\u3067DMARC\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306a\u8a18\u8ff0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-10285\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-11.png\" alt=\"\" width=\"1200\" height=\"137\" srcset=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-11.png 1200w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-11-300x34.png 300w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-11-1024x117.png 1024w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-11-768x88.png 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p style=\"text-align: right;\"><span style=\"font-size: 10pt;\">\u203b\u5f15\u7528\uff1a<a href=\"https:\/\/www.dekyo.or.jp\/soudan\/data\/anti_spam\/meiwakumanual3\/manual_3rd_edition.pdf\" target=\"_blank\" rel=\"noopener\">\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u63a8\u9032\u5354\u8b70\u4f1a<\/a><\/span><\/p>\n<p>DMARC\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u307e\u3067\u7d42\u4e86\u3059\u308b\u3068\u3001DMARC\u304c\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<p style=\"text-align: center;\"><strong>\\\u81ea\u793e\u306e\u306a\u308a\u3059\u307e\u3057\u30b5\u30a4\u30c8\u306e\u691c\u77e5\u30fb\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u5bfe\u7b56\u306b\uff01\/<a href=\"https:\/\/frauddetection.cacco.co.jp\/o-motion\/download2\/phishing_selfcheck\/?ref_type=media_\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-10817 size-full\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/09\/banner_1024-325-2.png\" alt=\"\u9244\u58c1PACKfor\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\" width=\"1000\" height=\"300\" \/><\/a><\/strong><\/p>\n<h2>DMARC\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b\u306b\u306f<\/h2>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-10279\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-4.jpeg\" alt=\"\" width=\"1200\" height=\"675\" srcset=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-4.jpeg 1200w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-4-300x169.jpeg 300w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-4-1024x576.jpeg 1024w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-4-768x432.jpeg 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p>DMARC\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u306f\u3001<strong>DMARC\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b<\/strong>\u3053\u3068\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<div class=\"well2\">\n<p>\u3010DMARC\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u4e00\u4f8b\u3011<\/p>\n<ol>\n<li>Gmail<\/li>\n<li>Outlook<\/li>\n<li>Yahoo!\u30e1\u30fc\u30eb<\/li>\n<\/ol>\n<\/div>\n<p>\u3053\u308c\u3089\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u5b9b\u306bDMARC\u3092\u8a2d\u5b9a\u3057\u305f\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u9001\u4fe1\u3057\u3001SPF\u30fbDKIM\u30fbDMARC\u304c\u3059\u3079\u3066\u300cpass\u300d\u306b\u306a\u3063\u3066\u3044\u308c\u3070\u3001\u554f\u984c\u306a\u304fDMARC\u304c\u8a2d\u5b9a\u3067\u304d\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>DMARC\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3067\u304d\u305f\u3089\u3001<strong>\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u6642\u306e\u30dd\u30ea\u30b7\u30fc\u306f\u300cquarantine\u300d\u300creject\u300d\u306e\u3069\u3061\u3089\u304b\u306b\u8a2d\u5b9a\u3059\u308b<\/strong>\u306e\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n<p>\u30e1\u30fc\u30eb\u306e\u6271\u3044\u3092\u9001\u4fe1\u5074\u304c\u3042\u3089\u304b\u3058\u3081\u5ba3\u8a00\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5b89\u5168\u306b\u30e1\u30fc\u30eb\u306e\u3084\u308a\u3068\u308a\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>DMARC\u8a2d\u5b9a\u6642\u306b\u6c17\u3092\u4ed8\u3051\u305f\u30443\u3064\u306e\u3053\u3068<\/h2>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-10280\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-5.jpeg\" alt=\"\" width=\"1200\" height=\"703\" srcset=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-5.jpeg 1200w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-5-300x176.jpeg 300w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-5-1024x600.jpeg 1024w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-5-768x450.jpeg 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p>DMARC\u306f\u3001\u6b63\u3057\u304f\u8a2d\u5b9a\u3057\u306a\u3044\u3068\u8a8d\u8a3c\u5931\u6557\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>DMARC\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3057\u3001\u8a8d\u8a3c\u304c\u5931\u6557\u3059\u308b\u5834\u5408\u306b\u306f\u6b21\u306e\u3053\u3068\u306b\u6c17\u3092\u3064\u3051\u3066\u518d\u5ea6\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<ol>\n<li>\u30c9\u30e1\u30a4\u30f3\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u9069\u5408\u3055\u305b\u308b<\/li>\n<li>DKIM\u306e\u7f72\u540d\u3092\u8ffd\u52a0\u3059\u308b<\/li>\n<li>DNS\u306b\u9001\u4fe1\u5143\u3092\u767b\u9332\u3059\u308b<\/li>\n<\/ol>\n<p>\u305d\u308c\u305e\u308c\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h3>\u3010\u305d\u306e1\u3011\u30c9\u30e1\u30a4\u30f3\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u9069\u5408\u3055\u305b\u308b<\/h3>\n<p>DMARC\u306e\u300c\u30c9\u30e1\u30a4\u30f3\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u300d\u3068\u306f\u3001<strong>\u30c9\u30e1\u30a4\u30f3\u306e\u7167\u5408\u95a2\u4fc2\u3092\u8868\u3059\u3082\u306e<\/strong>\u3067\u3059\u3002<\/p>\n<p>SPF\u3068DKIM\u306e\u8a8d\u8a3c\u7d50\u679c\u3068\u30c9\u30e1\u30a4\u30f3\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304c\u9069\u5408\u3059\u308b\u3068\u3001DMARC\u304c\u6210\u529f\u3057\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u305f\u3081\u3001\u30c9\u30e1\u30a4\u30f3\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304cFrom\u30d8\u30c3\u30c0\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3068\u7570\u306a\u308b\u5834\u5408\u306fDMARC\u304c\u5931\u6557\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<div class=\"well2\">\n<p>\u3010\u30c9\u30e1\u30a4\u30f3\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304c\u539f\u56e0\u3067DMARC\u304c\u5931\u6557\u3059\u308b\u4f8b\u3011<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>\u5c4a\u3044\u305f\u30e1\u30fc\u30eb\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u300cexample.com\u300d<\/li>\n<li>\u5c4a\u3044\u305f\u30e1\u30fc\u30eb\u306eFrom\u30d8\u30c3\u30c0\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304c\u300c\u25cb\u25cb@example.com\u300d<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<\/li>\n<li style=\"list-style-type: none;\">SPF\u3084DKIM\u306f\u3001\u53ef\u8996\u5316\u3055\u308c\u3066\u3044\u308bFrom\u30d8\u30c3\u30c0\u30a2\u30c9\u30ec\u30b9\u3068\u975e\u8868\u793a\u306eReturn-Path\u30d8\u30c3\u30c0\u304a\u3088\u3073DKIM\u7f72\u540d\u30d8\u30c3\u30c0\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u3092\u7167\u5408\u3059\u308b\u3002\u3053\u306e\u5834\u5408\u306f\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\u3057\u306a\u3044\u305f\u3081\u3001DMARC\u306f\u5931\u6557\u3059\u308b\u3002<\/li>\n<\/ol>\n<\/div>\n<p>DMARC\u304c\u5931\u6557\u3059\u308b\u5834\u5408\u306f\u30c9\u30e1\u30a4\u30f3\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u78ba\u8a8d\u3057\u3001\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u4fee\u6b63\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u3010\u305d\u306e2\u3011DKIM\u306e\u7f72\u540d\u3092\u8ffd\u52a0\u3059\u308b<\/h3>\n<p>DMARC\u304c\u5931\u6557\u3059\u308b\u4e8b\u4f8b\u3068\u3057\u3066\u3001<strong>\u30c9\u30e1\u30a4\u30f3\u306bDKIM\u7f72\u540d\u304c\u3055\u308c\u3066\u3044\u306a\u3044\u30b1\u30fc\u30b9<\/strong>\u304c\u975e\u5e38\u306b\u591a\u304f\u898b\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>DKIM\u306e\u7f72\u540d\u304c\u306a\u3044\u5834\u5408\u3001\u30e1\u30fc\u30eb\u4ea4\u63db\u30b5\u30fc\u30d3\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u5074\u3067\u30c7\u30d5\u30a9\u30eb\u30c8\u306eDKIM\u7f72\u540d\u3092\u5272\u308a\u5f53\u3066\u308b\u305f\u3081\u7f72\u540d\u304c\u4e00\u81f4\u305b\u305a\u3001DKIM\u3068DMARC\u304c\u5931\u6557\u3057\u307e\u3059\u3002<\/p>\n<p>\u30c9\u30e1\u30a4\u30f3\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u304c\u9069\u5408\u3057\u3066\u3044\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305aDMARC\u304c\u5931\u6557\u3059\u308b\u5834\u5408\u306f\u3001DKIM\u306e\u7f72\u540d\u304c\u8ffd\u52a0\u3055\u308c\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3057\u3066\u307f\u308b\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<h3>\u3010\u305d\u306e3\u3011DNS\u306b\u9001\u4fe1\u5143\u3092\u767b\u9332\u3059\u308b<\/h3>\n<p>DMARC\u3092\u8a2d\u5b9a\u3057\u305f\u30c9\u30e1\u30a4\u30f3\u3092DNS\u306b\u767b\u9332\u3057\u5fd8\u308c\u305f\u3053\u3068\u304c\u539f\u56e0\u3067\u3001DMARC\u304c\u5931\u6557\u3059\u308b\u4e8b\u4f8b\u3082\u3088\u304f\u898b\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>DMARC\u3092\u8a2d\u5b9a\u3057\u305f\u5834\u5408\u3001\u30c9\u30e1\u30a4\u30f3\u306eDNS\u306b\u8a31\u53ef\u3055\u308c\u305f\u9001\u4fe1\u30bd\u30fc\u30b9\u304c\u3059\u3079\u3066\u30ea\u30b9\u30c8\u30a2\u30c3\u30d7\u3055\u308c\u3066\u3044\u306a\u3044\u3068\u3001\u30ea\u30b9\u30c8\u306b\u306a\u3044\u30c9\u30e1\u30a4\u30f3\u306f\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001<strong>DMARC\u3092\u8a2d\u5b9a\u3057\u305f\u30c9\u30e1\u30a4\u30f3\u306f\u3059\u3079\u3066DNS\u306b\u767b\u9332<\/strong>\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>DMARC\u3092\u8a2d\u5b9a\u3057\u3066\u3082\u9632\u3052\u306a\u3044\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u304c\u3042\u308b<\/h2>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-10281\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-6.jpeg\" alt=\"\" width=\"1200\" height=\"800\" srcset=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-6.jpeg 1200w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-6-300x200.jpeg 300w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-6-1024x683.jpeg 1024w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-6-768x512.jpeg 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p>DMARC\u306f\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u5bfe\u7b56\u304c\u3067\u304d\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u3072\u3068\u3064\u3067\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001DMARC\u3092\u6b63\u3057\u304f\u8a2d\u5b9a\u3057\u3066\u3044\u3066\u3082\u3001<strong>\u3059\u3079\u3066\u306e<a href=\"https:\/\/frauddetection.cacco.co.jp\/media\/fraud-access\/4735\/\" target=\"_blank\" rel=\"noopener\">\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb<\/a>\u3092\u9632\u6b62\u3067\u304d\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093<\/strong>\u3002<\/p>\n<p>\u4e00\u4f8b\u3068\u3057\u3066\u3001\u4ee5\u4e0b\u306b\u8a72\u5f53\u3059\u308b\u5834\u5408\u306f\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u306e\u88ab\u5bb3\u306b\u906d\u3046\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<div class=\"well2\">\n<p>\u3010DMARC\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u3066\u3082\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u9632\u3052\u306a\u3044\u4f8b\u3011<\/p>\n<ol>\n<li>DMARC\u8a8d\u8a3c\u306e\u8aa4\u5224\u5b9a<\/li>\n<li>\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u305d\u306e\u3082\u306e\u304b\u3089\u306a\u308a\u3059\u307e\u3057\u3066\u3044\u305f\u5834\u5408\uff08\u203b\uff09<\/li>\n<\/ol>\n<p>\u203b\u305f\u3068\u3048\u3070\u3001yahooo.co.jp\u3068\u306a\u308a\u3059\u307e\u3057\u305f\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u9001\u4fe1\u3057\u3001SPF\u3084DKIM\u3092yahooo.co.jp\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u8981\u6c42\u3057\u305f\u5834\u5408\u306f\u8a8d\u8a3c\u304c\u6210\u529f\u3059\u308b<\/p>\n<\/div>\n<p>\u307e\u305f\u3001DMARC\u3092\u8a2d\u5b9a\u3059\u308b\u305f\u3081\u306b\u306fSPF\u30fbDKIM\u30fbDMARC\u3078\u306e\u77e5\u8b58\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e0a\u8a18\u3092\u8e0f\u307e\u3048\u3001\u300cDMARC\u306e\u8a2d\u5b9a\u65b9\u6cd5\u304c\u308f\u304b\u3089\u306a\u3044\u300d\u300c\u3082\u3063\u3068\u7c21\u5358\u306b\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u3092\u5f37\u5316\u3057\u305f\u3044\u300d\u3068\u3044\u3063\u305f\u65b9\u306b\u306f\u3001<strong>\u4e0d\u6b63\u691c\u77e5\u30b5\u30fc\u30d3\u30b9\u306e\u5c0e\u5165<\/strong>\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001Cacco\u306e\u300cO-PLUX\u300d\u3092\u5c0e\u5165\u3059\u308b\u3068\u6b21\u306e\u3088\u3046\u306a\u30e1\u30ea\u30c3\u30c8\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<div class=\"well2\">\n<p>\u3010\u4e0d\u6b63\u691c\u77e5\u30b5\u30fc\u30d3\u30b9\u300cO-PLUX\u300d\u306e\u5c0e\u5165\u30e1\u30ea\u30c3\u30c8\u3011<\/p>\n<ul>\n<li>\u306a\u308a\u3059\u307e\u3057\u30ed\u30b0\u30a4\u30f3\u3092\u691c\u77e5\u3057\u305f\u969b\u306b\u300c2\u8981\u7d20\u8a8d\u8a3c\u300d\u300c\u30a2\u30af\u30bb\u30b9\u906e\u65ad\u300d\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3092\u9632\u3052\u308b<\/li>\n<li>IT\u77e5\u8b58\u304c\u9ad8\u304f\u306a\u304f\u3066\u3082\u3001\u300cO-PLUX\u300d\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u3092\u5f37\u5316\u3067\u304d\u308b<\/li>\n<li>\u660e\u3089\u304b\u306a\u4e0d\u6b63\u306b\u5bfe\u3057\u3066\u81ea\u52d5\u3067\u30d6\u30ed\u30c3\u30af\u3059\u308b\u6a5f\u80fd\u304c\u3042\u308b\u305f\u3081\u3001\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u306b\u304b\u304b\u308b\u8ca0\u62c5\u3092\u524a\u6e1b\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/div>\n<p>\u300cO-PLUX\u300d\u306f<strong>Web\u30b5\u30a4\u30c8\u306b\u30b3\u30fc\u30c9\u3092\u57cb\u3081\u8fbc\u3080\u3060\u3051\u3067\u7c21\u5358\u306b\u5c0e\u5165<\/strong>\u3067\u304d\u3001\u3053\u308c\u307e\u3067\u5927\u624b\u30cd\u30c3\u30c8\u8a3c\u5238\u3084\u9280\u884c\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u591a\u304f\u306e\u4f01\u696d\u3067\u5c0e\u5165\u3055\u308c\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3084\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u5bfe\u7b56\u3092\u5f37\u5316\u3057\u3001\u304a\u5ba2\u69d8\u306e\u4fe1\u983c\u3092\u9ad8\u3081\u305f\u3044\u3068\u8003\u3048\u3066\u3044\u308b\u65b9\u306f\u3001\u4e0b\u8a18\u306e\u30d0\u30ca\u30fc\u3092\u30af\u30ea\u30c3\u30af\u306e\u3046\u3048\u304a\u6c17\u8efd\u306b\u30b5\u30fc\u30d3\u30b9\u8cc7\u6599\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<p><a href=\"https:\/\/frauddetection.cacco.co.jp\/o-motion\/?ref_type=media_\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-26640\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2026\/03\/O-PLUX_for-money-1000x300.png\" alt=\"O-PLUX_for finance\" width=\"1000\" height=\"300\" srcset=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2026\/03\/O-PLUX_for-money-1000x300.png 1000w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2026\/03\/O-PLUX_for-money-300x90.png 300w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2026\/03\/O-PLUX_for-money-768x230.png 768w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2026\/03\/O-PLUX_for-money-400x120.png 400w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2026\/03\/O-PLUX_for-money-800x240.png 800w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2026\/03\/O-PLUX_for-money-1200x360.png 1200w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2026\/03\/O-PLUX_for-money.png 1400w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/a><\/p>\r\n<p style=\"text-align: center;\">\u81ea\u793e\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u72b6\u6cc1\u304c\u5206\u304b\u308b\u30c8\u30e9\u30a4\u30a2\u30eb\u5229\u7528\u53d7\u4ed8\u4e2d\uff01<br \/><a class=\"q_button bt_blue pill sz_l\" href=\"https:\/\/frauddetection.cacco.co.jp\/various_download\/materials_o-pluxfinance\/?ref_type=media_\" target=\"_blank\" rel=\"noopener\">O-PLUX\u306e\u8cc7\u6599DL\u306f\u3053\u3061\u3089<\/a><\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-10283\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-7.jpeg\" alt=\"\" width=\"1200\" height=\"675\" srcset=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-7.jpeg 1200w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-7-300x169.jpeg 300w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-7-1024x576.jpeg 1024w, https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/05\/media-230531-7-768x432.jpeg 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p>DMARC\u3068\u306f\u3001<strong>\u9001\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u304c\u9593\u9055\u3044\u306a\u304f\u9001\u4fe1\u8005\u672c\u4eba\u306e\u3082\u306e\u3060\u3068\u53d7\u4fe1\u8005\u5074\u306b\u4f1d\u3048\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853<\/strong>\u3067\u3059\u3002<\/p>\n<p>DMARC\u306f\u300cSPF\u300d\u300cDKIM\u300d\u300cDMARC\u30ec\u30b3\u30fc\u30c9\u300d\u3092\u624b\u9806\u306b\u5f93\u3063\u3066\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>DMARC\u30ec\u30b3\u30fc\u30c9\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u8a18\u8ff0\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<div class=\"well2\">\n<p>\u3010DMARC\u30ec\u30b3\u30fc\u30c9\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u5185\u5bb9\u3011<\/p>\n<ul>\n<li>P\u2026\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u51e6\u7406\u30dd\u30ea\u30b7\u30fc\u3092\u5ba3\u8a00\u3059\u308b<\/li>\n<li>rua\u2026DMARC\u306e\u96c6\u8a08\u30ec\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u53d6\u308b\u30a2\u30c9\u30ec\u30b9<\/li>\n<li>ruf\u2026DMARC\u306e\u8a8d\u8a3c\u30ec\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u53d6\u308b\u30a2\u30c9\u30ec\u30b9<\/li>\n<\/ul>\n<\/div>\n<p>\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u3092\u5f37\u5316\u3059\u308b\u305f\u3081\u306b\u3082\u3001\u672c\u8a18\u4e8b\u306e\u5185\u5bb9\u3092\u53c2\u8003\u306b\u3057\u3066DMARC\u3092\u8a2d\u5b9a\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u306a\u304a\u3001\u5f53\u30b5\u30a4\u30c8\u3092\u904b\u55b6\u3057\u3066\u3044\u308bCacco\u3067\u306fDMARC\u904b\u7528\u3092\u652f\u63f4\u30fb\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u5bfe\u7b56\u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u307e\u305a\u306f\u3001\u81ea\u793e\u306e\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u5bfe\u7b56\u72b6\u6cc1\u3092\u30bb\u30eb\u30d5\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u3066\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u8cc7\u6599\u3092\u6d3b\u7528\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p style=\"text-align: center;\"><strong>\\\u81ea\u793e\u306e\u306a\u308a\u3059\u307e\u3057\u30b5\u30a4\u30c8\u306e\u691c\u77e5\u30fb\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u5bfe\u7b56\u306b\uff01\/<a href=\"https:\/\/frauddetection.cacco.co.jp\/o-motion\/download2\/phishing_selfcheck\/?ref_type=media_\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-10817 size-full\" src=\"https:\/\/frauddetection.cacco.co.jp\/media\/wp-content\/uploads\/2023\/09\/banner_1024-325-2.png\" alt=\"\u9244\u58c1PACKfor\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\" width=\"1000\" height=\"300\" \/><\/a><\/strong><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"DMARC\u306f\u3001\u300c\u3053\u306e\u30e1\u30fc\u30eb\u306f\u9593\u9055\u3044\u306a\u304f\u79c1\u304c\u9001\u4fe1\u3057\u305f\u3082\u306e\u3067\u3059\u300d\u3068\u53d7\u4fe1\u5074\u306b\u4f1d\u3048\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u6280\u8853\u3067\u3059\u3002 DMARC\u3092\u5229\u7528\u3059\u308b\u3068\u3001\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u8005\u306f\u81ea\u793e\u30d6\u30e9\u30f3\u30c9\u306e\u4fdd\u8b77\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 \u672c\u8a18\u4e8b\u3067\u306f\u3001 DMARC\u30ec\u30b3\u30fc\u30c9\u306e\u8a18\u8f09\u5185\u5bb9 DMARC\u306e\u8a2d\u5b9a\u65b9\u6cd5 DMARC\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5 DMARC\u8a2d\u5b9a\u6642\u306b\u6c17\u3092\u3064\u3051\u305f\u3044\u3053\u3068 \u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002 \u306a\u304a\u3001DMARC\u306e\u4ed5\u7d44\u307f\u3084\u30e1\u30ea\u30c3\u30c8\u30fb\u30c7\u30e1\u30ea\u30c3\u30c8\u306b\u3064\u3044\u3066\u306f\u6b21\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u305c\u3072\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002 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