{"id":1423,"date":"2021-01-06T15:43:59","date_gmt":"2021-01-06T06:43:59","guid":{"rendered":"https:\/\/dtdrz8mlqwp80.cloudfront.net\/article\/uncategorized\/400\/"},"modified":"2024-02-21T13:25:22","modified_gmt":"2024-02-21T04:25:22","slug":"400","status":"publish","type":"post","link":"https:\/\/www.spiral-platform.co.jp\/article\/mail\/400\/","title":{"rendered":"\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u300cDMARC\u300d\u3067\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5165\u308c\u3055\u305b\u306a\u3044\uff01vol.2"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"\/article\/wp-content\/uploads\/sites\/3\/pixta_43573071_M.jpg\" alt=\"\" class=\"wp-image-5698\" width=\"600\" height=\"400\"\/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list\"><li>\u30e1\u30eb\u30de\u30ac\u8cfc\u8aad\u8005\u304b\u3089\u3001\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u3068\u554f\u3044\u5408\u308f\u305b\u3092\u53d7\u3051\u305f\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f<\/li><li>\u30b9\u30d1\u30a4\u30e9\u30eb\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u8a2d\u5b9a\u306b\u3066\u3001\u9ec4\u8272\u4fe1\u53f7\u306e\u307e\u307e\u914d\u4fe1\u3057\u3066\u3044\u307e\u305b\u3093\u304b\uff1f<\/li><li>\u3042\u306a\u305f\u306e\u7d44\u7e54\u306b\u306a\u308a\u3059\u307e\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u304c\u3069\u306e\u304f\u3089\u3044\u3042\u308b\u304b\u3001\u77e5\u3063\u3066\u3044\u307e\u3059\u304b\uff1f<\/li><\/ul>\n\n\n\n<p><a href=\"\/article\/mail\/398\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u524d\u56de<\/a>\u306f\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5165\u308c\u3055\u305b\u306a\u3044\u89e3\u6c7a\u7b56\u300cDMARC\u300d\u306e\u6982\u8981\u3092\u304a\u4f1d\u3048\u3057\u307e\u3057\u305f\u3002\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u4f7f\u3063\u3066\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5165\u308c\u3055\u305b\u306a\u3044\u305f\u3081\u306b\u306f\u3001\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5074\u304a\u3088\u3073\u53d7\u4fe1\u5074\u306e\u4e21\u65b9\u304c\u53d6\u308a\u7d44\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u306f\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u300cDMARC\u300d\u306e\u9001\u4fe1\u5074\u304a\u3088\u3073\u53d7\u4fe1\u5074\u306e\u5c0e\u5165\u72b6\u6cc1\u3092\u304a\u5c4a\u3051\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"has-small-font-size\">\u524d\u56de\u306e\u8a18\u4e8b\u306f\u300c<a href=\"\/article\/mail\/398\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u300cDMARC\u300d\u3067\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5165\u308c\u3055\u305b\u306a\u3044\uff01vol.1<\/a>\u300d\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<div class=\"solLink under_head\"><a href=\"\/solution\/mail\/\"><img src=\"https:\/\/www.spiral-platform.co.jp\/article\/wp-content\/uploads\/sites\/3\/common_img\/cnt_bnr_mail01x2.gif\"><\/a><\/div><h2 class=\"wp-block-heading\">\u7dcf\u52d9\u7701\u306e\u30c7\u30fc\u30bf\u3067\u898b\u308bDMARC<\/h2>\n\n\n\n<p>DMARC\u306e\u5c0e\u5165\u3092\u63a8\u9032\u3059\u308b\u76ee\u7684\u3067\u3001\u7dcf\u52d9\u7701\u304cJP\u30c9\u30e1\u30a4\u30f3\u306eDMARC\u8a2d\u5b9a\u72b6\u6cc1\u3092\u516c\u8868\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8abf\u67fb\u306b\u3088\u308b\u3068\u30012018\u5e741\u6708\u306b\u8abf\u67fb\u958b\u59cb\u3057\u3066\u304b\u3089\u30012020\u5e746\u6708\u307e\u3067\u306e\u9593\u306b\u3001\u5168JP\u30c9\u30e1\u30a4\u30f3\u6570\u306b\u5bfe\u3059\u308bDMARC\u8a2d\u5b9a\u6570\u306e\u5272\u5408\u304c<\/p>\n\n\n\n<p class=\"has-large-font-size\">0.53 % \u2192 1.28 %<\/p>\n\n\n\n<p>\u306b\u4e0a\u6607\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/chart_soumushou.png\" alt=\"\u56f31\uff1a\u5168JP\u30c9\u30e1\u30a4\u30f3\u6570\u306b\u5bfe\u3059\u308bDMARC\u8a2d\u5b9a\u6570\u306e\u5272\u5408\" class=\"wp-image-5737\"\/><figcaption>\u56f31\uff1a\u5168JP\u30c9\u30e1\u30a4\u30f3\u6570\u306b\u5bfe\u3059\u308bDMARC\u8a2d\u5b9a\u6570\u306e\u5272\u5408 <br>\u51fa\u5178\uff1a<a href=\"https:\/\/www.soumu.go.jp\/main_sosiki\/joho_tsusin\/d_syohi\/m_mail.html#toukei\" target=\"_blank\" rel=\"noreferrer noopener\">\u7dcf\u52d9\u7701 \u96fb\u6c17\u901a\u4fe1\u6d88\u8cbb\u8005\u60c5\u5831\u30b3\u30fc\u30ca\u30fc \u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u30da\u30fc\u30b8<\/a><\/figcaption><\/figure>\n\n\n\n<p>\u4e0a\u6607\u306f\u3057\u3066\u3044\u307e\u3059\u304c\u3001<b>1.28%<\/b>\u3068\u3044\u3046\u6570\u5024\u3092\u898b\u3066\u3044\u304b\u304c\u3067\u3057\u3087\u3046\u304b\u3002<br>\u307e\u3060\u307e\u3060\u5c0e\u5165\u304c\u9032\u3093\u3067\u3044\u306a\u3044\u3068\u8a00\u3048\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b9\u30d1\u30a4\u30e9\u30eb\u5229\u7528\u8005\u306f\u3069\u3046\u3057\u3066\u308b\uff1f<\/h2>\n\n\n\n<p>\u5f53\u793e\u3067\u306f\u3001\u30b9\u30d1\u30a4\u30e9\u30eb\u3092\u5229\u7528\u3055\u308c\u3066\u3044\u308b\u7d44\u7e54\u306e\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u300cDKIM\u306e\u4f5c\u6210\u8005\u7f72\u540d\u300d\u304a\u3088\u3073\u300cDMARC\u300d\u5bfe\u5fdc\u72b6\u6cc1\u3092\u8abf\u67fb\u3044\u305f\u3057\u307e\u3057\u305f\u3002<br><font size=\"2pix\">\u203b \u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u300cSPF\u300d\u306f\u30b9\u30d1\u30a4\u30e9\u30eb\u5074\u3067\u8a2d\u5b9a\u3057\u3066\u304a\u308a\u3001\u30e6\u30fc\u30b6\u5074\u306e\u5bfe\u5fdc\u306f\u4e0d\u8981\u306e\u305f\u3081\u3001\u8abf\u67fb\u5bfe\u8c61\u304b\u3089\u9664\u5916\u3002<\/font><\/p>\n\n\n\n<p>\u8abf\u67fb\u671f\u9593\uff1a2020\u5e744\u6708 &#8211; 5\u6708<br>\u8abf\u67fb\u5bfe\u8c61\uff1a\u30b9\u30d1\u30a4\u30e9\u30eb\u306eDKIM\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3<br><font size=\"2pix\">\u203b \u7d44\u7e54\u30c9\u30e1\u30a4\u30f3\u300cexample.com\u300d\u3068\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u300caaa.example.com\u300d\u306f\u5225\u30c9\u30e1\u30a4\u30f3\u3068\u3057\u3066\u96c6\u8a08\u3002<\/font><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3069\u306e\u304f\u3089\u3044\u306e\u7d44\u7e54\u304cDMARC\u8a8d\u8a3c\u306b\u6210\u529f\u3059\u308b\u30e1\u30fc\u30eb\u3092\u914d\u4fe1\u3057\u3066\u308b\uff1f<\/h3>\n\n\n\n<p>\u30b9\u30d1\u30a4\u30e9\u30eb\u306eDKIM\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u306b\u767b\u9332\u3055\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u304a\u3088\u3073DKIM\u8b58\u5225\u60c5\u5831\u3092\u5143\u306b\u3001\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u30c9\u30e1\u30a4\u30f3\uff08\u4ee5\u4e0b\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\uff09\u306eDNS\u306b\u3001DKIM\u7f72\u540d\u306e\u516c\u958b\u9375\u304c\u8a2d\u7f6e\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u8abf\u67fb\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/chart_koukaikagi.png\" alt=\"\u56f32\uff1aDNS\u306bDKIM\u7f72\u540d\u306e\u516c\u958b\u9375\u304c\u8a2d\u7f6e\u3055\u308c\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\" class=\"wp-image-5735\"\/><figcaption>\u56f32\uff1aDNS\u306bDKIM\u7f72\u540d\u306e\u516c\u958b\u9375\u304c\u8a2d\u7f6e\u3055\u308c\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3<\/figcaption><\/figure>\n\n\n\n<p><b>\u516c\u958b\u9375\u3092DNS\u306b\u8a2d\u7f6e\u3057\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u306f\u300149.6%\u3067\u3057\u305f\u3002<\/b><\/p>\n\n\n\n<p>\u516c\u958b\u9375\u3092DNS\u306b\u8a2d\u7f6e\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u4f5c\u6210\u8005\u306b\u3088\u3063\u3066\u7f72\u540d\u3055\u308c\u305f\uff08\u4f5c\u6210\u8005\u7f72\u540d\u3068\u8a00\u3044\u307e\u3059\uff09\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30e1\u30fc\u30eb\u3068\u306a\u308a\u3001DMARC\u8a8d\u8a3c\u304c\u6210\u529f\u3057\u307e\u3059\u3002<br><font size=\"2pix\">\u203b\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u3059\u308b\u307e\u3067\u306e\u9593\u3001\u4f55\u3089\u304b\u306e\u539f\u56e0\u3067DKIM\u7f72\u540d\u304c\u58ca\u308c\u305f\u5834\u5408\u306a\u3069\u3001DMARC\u8a8d\u8a3c\u306b\u5931\u6557\u3059\u308b\u53ef\u80fd\u6027\u306f\u3042\u308a\u307e\u3059\u3002<\/font><\/p>\n\n\n\n<p>\u30b9\u30d1\u30a4\u30e9\u30eb\u306eExpress2\u914d\u4fe1\u8a2d\u5b9a\u753b\u9762\u306b\u3066\u3001\u914d\u4fe1\u3059\u308b\u524d\u306b\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30e1\u30fc\u30eb\u3068\u306a\u308b\u304b\u3069\u3046\u304b\u3092\u9001\u4fe1\u5143\u8a8d\u8a3c\u306e\u4fe1\u53f7\u8868\u793a\u3067\u304a\u77e5\u3089\u305b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/signal-blue.png\" alt=\"Express2\u914d\u4fe1\u8a2d\u5b9a\u753b\u9762\u306e\u9001\u4fe1\u5143\u8a8d\u8a3c\" class=\"wp-image-5738\"\/><figcaption>Express2\u914d\u4fe1\u8a2d\u5b9a\u753b\u9762\u306e\u9001\u4fe1\u5143\u8a8d\u8a3c<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u3069\u306e\u304f\u3089\u3044\u306e\u7d44\u7e54\u304cDMARC\u5bfe\u5fdc\u3092\u3057\u3066\u308b\uff1f<\/h3>\n\n\n\n<p>\u6b21\u306b\u3001DKIM\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u306b\u5bfe\u3057\u3001DMARC\u30ec\u30b3\u30fc\u30c9\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u8abf\u67fb\u3044\u305f\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/chart_dmarrecord.png\" alt=\"\u56f33\uff1aDKIM\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u306b\u8a2d\u5b9a\u3055\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u306e\u3046\u3061\u3001DMARC\u30ec\u30b3\u30fc\u30c9\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\" class=\"wp-image-5734\"\/><figcaption>\u56f33\uff1aDKIM\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u306b\u8a2d\u5b9a\u3055\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u306e\u3046\u3061\u3001DMARC\u30ec\u30b3\u30fc\u30c9\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3<\/figcaption><\/figure>\n\n\n\n<p><b>DMARC\u30ec\u30b3\u30fc\u30c9\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u306e\u5272\u5408\u306f\u30019.2\uff05\u3067\u3057\u305f\u3002<\/b><br>\u4e0a\u8a18\u306e\u7dcf\u52d9\u7701\u8abf\u67fb\u306b\u6bd4\u3079\u308b\u3068\u3001DMARC\u5c0e\u5165\u7387\u306f\u9ad8\u3044\u3068\u8a00\u3048\u308b\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DMARC\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306e\u6271\u3044\u306f\u3069\u3046\u3057\u3066\u308b\uff1f<\/h3>\n\n\n\n<p>DMARC\u30ec\u30b3\u30fc\u30c9\u3067\u306f\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u3092\u7ba1\u7406\u3059\u308b\u5074\u304c\u3001\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306e\u6271\u3044\u300c\u30dd\u30ea\u30b7\u30fc\u300d\u3092\u5ba3\u8a00\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u56f33\u3067DMARC\u6709\uff08DMARC\u30ec\u30b3\u30fc\u30c9\u8a2d\u5b9a\u6e08\u307f\uff09\u3068\u306a\u3063\u305f\u30c9\u30e1\u30a4\u30f3\u306eDMARC\u30ec\u30b3\u30fc\u30c9\u306b\u3064\u3044\u3066\u3001\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u30dd\u30ea\u30b7\u30fc\u3092\u8abf\u67fb\u3044\u305f\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u53d7\u4fe1\u30e1\u30fc\u30eb\u306e\u6271\u3044\u30dd\u30ea\u30b7\u30fc\u306f\u4ee5\u4e0b\u306e3\u7a2e\u985e\u304b\u3089\u9078\u629e\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u4f55\u3082\u3057\u306a\u3044\uff08\u53d7\u4fe1\u5074\u306f\u305d\u306e\u307e\u307e\u914d\u4fe1\u3057\u307e\u3059\uff09<\/li><li>\u9694\u96e2\u3059\u308b\uff08\u53d7\u4fe1\u5074\u306f\u8ff7\u60d1BOX\u306b\u632f\u308a\u5206\u3051\u307e\u3059\uff09<\/li><li>\u62d2\u5426\u3059\u308b\uff08\u53d7\u4fe1\u5074\u306f\u53d7\u4fe1\u3092\u62d2\u5426\u3057\u307e\u3059\uff09<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/chart_policy.png\" alt=\"\u56f34\uff1a\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308bDMARC\u30ec\u30b3\u30fc\u30c9\u5185\u306e\u30dd\u30ea\u30b7\u30fc\" class=\"wp-image-5736\"\/><figcaption>\u56f34\uff1a\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308bDMARC\u30ec\u30b3\u30fc\u30c9\u5185\u306e\u30dd\u30ea\u30b7\u30fc<\/figcaption><\/figure>\n\n\n\n<p><b>65.9%<\/b>\u304c\u300c\u4f55\u3082\u3057\u306a\u3044\u300d\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<br><strong>DMARC\u5c0e\u5165\u76f4\u5f8c\u306f\u3001\u3044\u304d\u306a\u308a\u53d7\u4fe1\u62d2\u5426\u3092\u958b\u59cb\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u306a\u308a\u3059\u307e\u3055\u308c\u3066\u3044\u308b\u72b6\u6cc1\u306e\u69d8\u5b50\u3092\u898b\u308b\u3053\u3068\u304c\u591a\u3044\u305f\u3081\u3001\u300c\u4f55\u3082\u3057\u306a\u3044\u300d\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n<p><b>22.0%<\/b>\u304c\u300c\u9694\u96e2\u3059\u308b\u300d\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<strong>\u300c\u9694\u96e2\u3059\u308b\u300d\u306e\u5834\u5408\u3001\u30e1\u30fc\u30eb\u53d7\u4fe1\u5074\u306b\u3088\u3063\u3066\u3001\u9001\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u306f\u8ff7\u60d1BOX\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n<p><b>12.2%<\/b>\u304c\u300c\u62d2\u5426\u3059\u308b\u300d\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<strong>\u3053\u306e\u5834\u5408\u3001\u30e1\u30fc\u30eb\u53d7\u4fe1\u8005\u306e\u53d7\u4fe1BOX\u306b\u306f\u5c4a\u304b\u306a\u3044\u305f\u3081\u3001\u5404ISP\u306e\u5bfe\u5fdc\u72b6\u6cc1\u306a\u3069\u614e\u91cd\u306b\u5224\u65ad\u3057\u3066\u300c\u62d2\u5426\u3059\u308b\u300d\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u696d\u7a2e\u5225\u306b\u898b\u3066\u307f\u308b\u3068\uff1f<\/h3>\n\n\n\n<p>DKIM\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u306b\u3064\u3044\u3066\u3001\u30c9\u30e1\u30a4\u30f3\u3092\u7ba1\u7406\u3055\u308c\u3066\u3044\u308b\u7d44\u7e54\u56e3\u4f53\u306e\u696d\u7a2e\u3092\u8abf\u67fb\u3044\u305f\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/chart_dkimgyoushu.png\" alt=\"\u56f35\uff1aDKIM\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u7d44\u7e54\u306e\u696d\u7a2e\" class=\"wp-image-5732\"\/><figcaption>\u56f35\uff1aDKIM\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u7d44\u7e54\u306e\u696d\u7a2e<\/figcaption><\/figure>\n\n\n\n<p>DKIM\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u3092\u7ba1\u7406\u3057\u3066\u3044\u308b\u7d44\u7e54\u3092\u696d\u7a2e\u3067\u898b\u308b\u3068\u3001\u30b5\u30fc\u30d3\u30b9\u696d\u3068\u60c5\u5831\u901a\u4fe1\u696d\u304c\u4e00\u756a\u591a\u3044\u7d50\u679c\u3068\u306a\u308a\u307e\u3057\u305f\u3002<br>\u6b21\u306b\u591a\u3044\u306e\u304c\u91d1\u878d\u4fdd\u967a\u696d\u3067\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u6b21\u306b\u3001DKIM\u7f72\u540d\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u306b\u3064\u3044\u3066\u3001DMARC\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u7d44\u7e54\u306e\u696d\u7a2e\u3092\u8abf\u67fb\u3044\u305f\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/chart_dmarcgyoushu.png\" alt=\"\u56f36\uff1aDMARC\u3092\u5c0e\u5165\u3057\u3066\u3044\u308b\u7d44\u7e54\u306e\u696d\u7a2e\" class=\"wp-image-5733\"\/><figcaption>\u56f36\uff1aDMARC\u3092\u5c0e\u5165\u3057\u3066\u3044\u308b\u7d44\u7e54\u306e\u696d\u7a2e<\/figcaption><\/figure>\n\n\n\n<p>DMARC\u3092\u5c0e\u5165\u3057\u3066\u3044\u308b\u7d44\u7e54\u306e\u696d\u7a2e\u306b\u3064\u3044\u3066\u3082\u3001\u60c5\u5831\u901a\u4fe1\u696d\u304a\u3088\u3073\u30b5\u30fc\u30d3\u30b9\u696d\u304c\u4e00\u756a\u591a\u304f\u306a\u308a\u307e\u3057\u305f\u3002\u6b21\u306b\u591a\u3044\u306e\u304c\u88fd\u9020\u696d\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30e1\u30fc\u30eb\u53d7\u4fe1\u5074\u306eDMARC\u5bfe\u5fdc\u72b6\u6cc1\u306f\uff1f<\/h2>\n\n\n\n<p>\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u3059\u308b\u5074\u306eISP\u5404\u793e\u3067\u306f\u3001\u3069\u306e\u304f\u3089\u3044DMARC\u3078\u306e\u5bfe\u5fdc\u304c\u9032\u3093\u3067\u3044\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n\n\n\n<p>\u65e5\u672c\u30c7\u30fc\u30bf\u901a\u4fe1\u5354\u4f1a\u3000\u8ff7\u60d1\u30e1\u30fc\u30eb\u76f8\u8ac7\u30bb\u30f3\u30bf\u30fc\u304c\u3001\u5404\u793e\u306e\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u5b9f\u65bd\u72b6\u6cc1\u3092\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002\uff082020\u5e746\u670830\u65e5\u6642\u70b9\uff09<br>\u53c2\u7167\uff1a<a href=\"https:\/\/www.dekyo.or.jp\/soudan\/contents\/auth\/index.html\" target=\"_blank\" rel=\"noreferrer noopener\">\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u5b9f\u65bd\u72b6\u6cc1 | \u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306b\u3064\u3044\u3066 | \u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u6280\u8853 | \u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56 | \u8ff7\u60d1\u30e1\u30fc\u30eb\u76f8\u8ac7\u30bb\u30f3\u30bf\u30fc<\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u4e3b\u306a\u30d7\u30ed\u30d0\u30a4\u30c0\u306f\u3001 IIJmio \u30bb\u30fc\u30d5\u30c6\u30a3\u30e1\u30fc\u30eb\u3001mineo\u3001au one net\u3001ODN\u306a\u3069\u3067\u3059\u3002<\/li><li>\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u643a\u5e2f\u4f1a\u793e\u306f\u3001NTT\u30c9\u30b3\u30e2\u3001KDDI\u3001\u30bd\u30d5\u30c8\u30d0\u30f3\u30af\u3067\u3059\u3002<\/li><li>\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u4e3b\u306a\u30d5\u30ea\u30fc\u30e1\u30fc\u30eb\u306f\u3001Outlook.com\u3001Yahoo!\u30e1\u30fc\u30eb\u3067\u3059\u3002<\/li><\/ul>\n\n\n\n<p>\u30e1\u30fc\u30eb\u9001\u4fe1\u5074\u304cDMARC\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u3066\u3001\u304b\u3064\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5148\u304c\u4e0a\u8a18\u4e8b\u696d\u8005\u306e\u30b5\u30fc\u30d3\u30b9\u3060\u3063\u305f\u5834\u5408\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3067NG\u3068\u306a\u3063\u305f\u30e1\u30fc\u30eb\u306f\u3001\u30e1\u30fc\u30eb\u9001\u4fe1\u5074\u306e\u8981\u671b\u901a\u308a\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u3001\u672c\u7269\u306e\u30e1\u30fc\u30eb\u306e\u307f\u304c\u53d7\u4fe1\u8005\u306b\u5c4a\u304f\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001\u4e0a\u8a18\u30b5\u30a4\u30c8\u306b\u306f\u63b2\u8f09\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u304c\u3001Gmail\u306b\u304a\u3044\u3066\u3001DMARC\u306e\u8a8d\u8a3c\u7d50\u679c\u304c\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u56fd\u30ec\u30d9\u30eb\u3067\u53d6\u308a\u7d44\u3080DMARC<\/h2>\n\n\n\n<p>\u6700\u5f8c\u306b\u3001\u4e16\u754c\u7684\u306a\u5c0e\u5165\u304c\u9032\u3093\u3067\u3044\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u300cDMARC\u300d\u306b\u3064\u3044\u3066\u3001\u5404\u56fd\u306e\u53d6\u308a\u7d44\u307f\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/japan.png\" alt=\"\u65e5\u672c\u56fd\u56fd\u65d7\" class=\"wp-image-5740\" width=\"192\" height=\"128\"\/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p><font size=\"5pix\">\u65e5\u672c<\/font>\u3067\u306f\u3001\u5185\u95a3\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30bb\u30f3\u30bf\u30fc\u304c\u653f\u5e9c\u6a5f\u95a2\u306b\u5bfe\u3057\u3001DMARC\u30dd\u30ea\u30b7\u30fc\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3068\u3057\u305f\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002<\/p>\n<\/div>\n<\/div>\n\n\n\n<p>\u53c2\u7167\uff1a<a href=\"https:\/\/www.nisc.go.jp\/active\/general\/pdf\/guide30.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">\u653f\u5e9c\u6a5f\u95a2\u7b49\u306e\u5bfe\u7b56\u57fa\u6e96\u7b56\u5b9a\u306e\u305f\u3081\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3 \uff08\u5e73\u6210 30 \u5e74\u5ea6\u7248\uff09<\/a> (PDF)<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/us.png\" alt=\"\u30a2\u30e1\u30ea\u30ab\u56fd\u65d7\" class=\"wp-image-5742\" width=\"192\" height=\"128\"\/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p><font size=\"5pix\">\u30a2\u30e1\u30ea\u30ab<\/font>\u3067\u306f\u3001\u56fd\u571f\u5b89\u5168\u4fdd\u969c\u7701\u304c\u9023\u90a6\u6a5f\u95a2\u306b\u5bfe\u3057\u3066\u3001\u62d8\u675f\u529b\u306e\u3042\u308b\u904b\u7528\u53f8\u4ee4\u3068\u3057\u3066\u3001DMARC\u30dd\u30ea\u30b7\u30fc\u306e\u8a2d\u5b9a\u3092\u8981\u6c42\u3057\u307e\u3057\u305f\u3002<\/p>\n<\/div>\n<\/div>\n\n\n\n<p>\u53c2\u7167\uff1a<a href=\"https:\/\/cyber.dhs.gov\/bod\/18-01\/\" target=\"_blank\" rel=\"noreferrer noopener\">Binding Operational Directive 18-01<\/a><br>\u300c90\u65e5\u4ee5\u5185\u300d\u3001\u300c1\u5e74\u4ee5\u5185\u300d\u3068\u671f\u9650\u3092\u5207\u3063\u3066\u5c0e\u5165\u3092\u9032\u3081\u308b\u91cd\u8981\u306a\u6c7a\u5b9a\u3068\u306a\u3063\u3066\u304a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/aus.png\" alt=\"\u30aa\u30fc\u30b9\u30c8\u30e9\u30ea\u30a2\u56fd\u65d7\" class=\"wp-image-5739\" width=\"192\" height=\"128\"\/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p><font size=\"5pix\">\u30aa\u30fc\u30b9\u30c8\u30e9\u30ea\u30a2<\/font>\u3067\u306f\u3001\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fc\u30bb\u30f3\u30bf\u30fc\u304c\u7d44\u7e54\u306b\u5bfe\u3057\u3066\u3001DMARC\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3092\u547c\u3073\u304b\u3051\u307e\u3057\u305f\u3002<\/p>\n<\/div>\n<\/div>\n\n\n\n<p>\u53c2\u7167\uff1a<a href=\"https:\/\/www.cyber.gov.au\/resources-business-and-government\/maintaining-devices-and-systems\/system-hardening-and-administration\/email-hardening\/malicious-email-mitigation-strategies\" target=\"_blank\" rel=\"noreferrer noopener\">Malicious Email Mitigation Strategies | Cyber.gov.au<\/a><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/sites\/3\/uk-1.png\" alt=\"\u30a4\u30ae\u30ea\u30b9\u56fd\u65d7\" class=\"wp-image-5752\" width=\"192\" height=\"128\"\/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p><font size=\"5pix\">\u30a4\u30ae\u30ea\u30b9<\/font>\u3067\u306f\u3001\u82f1\u56fd\u5185\u95a3\u5e9c\u306e\u4e00\u90e8\u3067\u3042\u308b\u653f\u5e9c\u30c7\u30b8\u30bf\u30eb\u30b5\u30fc\u30d3\u30b9\u304c\u30c9\u30e1\u30a4\u30f3\u300cxxx.gov.uk\u300d\u3067\u52d5\u4f5c\u3059\u308b\u30b5\u30fc\u30d3\u30b9\u306b\u5bfe\u3057\u3066\u30012016\u5e7410\u67081\u65e5\u307e\u3067\u306bDMARC\u306e\u30dd\u30ea\u30b7\u30fc\u3092\u300c\u53d7\u53d6\u62d2\u5426\u300d\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u5916\u90e8\u306e\u96fb\u5b50\u30e1\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306b\u3088\u3063\u3066\u96fb\u5b50\u30e1\u30fc\u30eb\u304c\u62d2\u5426\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3053\u3068\u3092\u767a\u8868\u3057\u307e\u3057\u305f\u3002<\/p>\n<\/div>\n<\/div>\n\n\n\n<p>\u53c2\u7167\uff1a<a href=\"https:\/\/technology.blog.gov.uk\/2016\/06\/28\/updating-our-security-guidelines-for-digital-services\/\" target=\"_blank\" rel=\"noreferrer noopener\">Updating our security guidelines for digital services &#8211; Technology in government<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SPIRAL\u00ae \u306e\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3078\u306e\u5bfe\u5fdc<\/h2>\n\n\n\n<p>\u30b9\u30d1\u30a4\u30e9\u30eb\u00ae \u3067\u306f\u3001\u7279\u96fb\u6cd5\u5bfe\u5fdc\u306e\u6a5f\u80fd\u63d0\u4f9b\u3084\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u5bfe\u7b56\u6280\u8853\u3067\u3042\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3cSPF\u3001DKIM\u3001DMARC\u306b\u3044\u3061\u306f\u3084\u304f\u5bfe\u5fdc\u3057\u3001\u53d7\u4fe1\u30d7\u30ed\u30d0\u30a4\u30c0\u306b\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u5224\u5b9a\u3055\u308c\u306b\u304f\u3044\u30e1\u30fc\u30eb\u9001\u4fe1\u306e\u74b0\u5883\u63d0\u4f9b\u306b\u65e5\u3005\u52aa\u3081\u3066\u304a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30b9\u30d1\u30a4\u30e9\u30eb\u00ae\u306e\u300cDKIM\u300d\u300cDMARC\u300d\u3078\u306e\u5bfe\u5fdc\u306b\u3064\u3044\u3066\u306f <a href=\"\/service\/spiralv1\/function\/mail\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u3053\u3061\u3089<\/a> \u3082\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u672c\u65e5\u306e\u307e\u3068\u3081<\/h2>\n\n\n\n<div class=\"box28\">\n    <span class=\"box-title\">POINT<\/span>\n    <p>\u65e5\u672c\u56fd\u5185\u304a\u3088\u3073\u30b9\u30d1\u30a4\u30e9\u30eb\u5229\u7528\u8005\u5185\u3067\u306e\u5c0e\u5165\u306f\u9032\u3093\u3067\u3044\u306a\u3044\u304c\u3001\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u5074\u3068\u9001\u4fe1\u5074\u306e\u4e21\u65b9\u304c\u53d6\u308a\u7d44\u3080\u5fc5\u8981\u304c\u3042\u308b\u3002<\/p>\n<\/div>\n\n\n\n<p>\u3067\u306f\u3001\u3044\u3056DMARC\u3092\u5c0e\u5165\u3059\u308b\u3068\u306a\u3063\u305f\u5834\u5408\u3001\u4f5c\u696d\u3084\u624b\u7d9a\u304d\u304c\u96e3\u3057\u304b\u3063\u305f\u308a\u5927\u5909\u306a\u3053\u3068\u306f\u3042\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002<br>\u6b21\u56de\u306fDMARC\u5c0e\u5165\u306e\u6d41\u308c\u3068\u904b\u7528\u306b\u3064\u3044\u3066\u304a\u5c4a\u3051\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30e1\u30eb\u30de\u30ac\u8cfc\u8aad\u8005\u304b\u3089\u3001\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u3068\u554f\u3044\u5408\u308f\u305b\u3092\u53d7\u3051\u305f\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f \u30b9\u30d1\u30a4\u30e9\u30eb\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u8a2d\u5b9a\u306b\u3066\u3001\u9ec4\u8272\u4fe1\u53f7\u306e\u307e\u307e\u914d\u4fe1\u3057\u3066\u3044\u307e\u305b\u3093\u304b\uff1f \u3042\u306a\u305f\u306e\u7d44\u7e54\u306b\u306a\u308a\u3059\u307e\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u304c\u3069\u306e\u304f\u3089\u3044\u3042\u308b\u304b\u3001\u77e5\u3063\u3066\u3044\u307e\u3059\u304b\uff1f \u524d\u56de\u306f\u3001\u306a\u308a\u3059\u307e\u3057\u30e1<a href=\"https:\/\/www.spiral-platform.co.jp\/article\/mail\/400\/\">[&#8230;\u7d9a\u304d\u3092\u8aad\u3080]<\/a><\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[16],"tags":[45,56,75],"class_list":["post-1423","post","type-post","status-publish","format-standard","hentry","category-mail","tag-spiral-operation","tag-security","tag-function"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u300cDMARC\u300d\u3067\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5165\u308c\u3055\u305b\u306a\u3044\uff01vol.2 | \u30b9\u30d1\u30a4\u30e9\u30eb\u682a\u5f0f\u4f1a\u793e<\/title>\n<meta name=\"description\" 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content=\"\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u300cDMARC\u300d\u3067\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5165\u308c\u3055\u305b\u306a\u3044\uff01vol.2 | \u30b9\u30d1\u30a4\u30e9\u30eb\u682a\u5f0f\u4f1a\u793e\" \/>\n<meta property=\"og:description\" content=\"\u30e1\u30eb\u30de\u30ac\u8cfc\u8aad\u8005\u304b\u3089\u3001\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u3068\u554f\u3044\u5408\u308f\u305b\u3092\u53d7\u3051\u305f\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f\u30b9\u30d1\u30a4\u30e9\u30eb\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u8a2d\u5b9a\u306b\u3066\u3001\u9ec4\u8272\u4fe1\u53f7\u306e\u307e\u307e\u914d\u4fe1\u3057\u3066\u3044\u307e\u305b\u3093\u304b\uff1f\u3042\u306a\u305f\u306e\u7d44\u7e54\u306b\u306a\u308a\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.spiral-platform.co.jp\/article\/mail\/400\/\" \/>\n<meta property=\"og:site_name\" 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