{"id":3509,"date":"2024-01-29T11:30:31","date_gmt":"2024-01-29T02:30:31","guid":{"rendered":"https:\/\/ec2-54-238-200-5.ap-northeast-1.compute.amazonaws.com\/blog\/?p=3509"},"modified":"2026-04-22T19:05:47","modified_gmt":"2026-04-22T10:05:47","slug":"%e9%80%81%e4%bf%a1%e3%83%89%e3%83%a1%e3%82%a4%e3%83%b3%e3%82%92%e8%aa%8d%e8%a8%bc%e3%81%99%e3%82%8b%e3%81%9f%e3%82%81%e3%81%aespf%e3%83%ac%e3%82%b3%e3%83%bc%e3%83%89%e3%81%ab%e8%a9%b3%e3%81%97","status":"publish","type":"post","link":"https:\/\/sendgrid.kke.co.jp\/blog\/?p=3509","title":{"rendered":"\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u3092\u8a8d\u8a3c\u3059\u308b\u305f\u3081\u306eSPF\u30ec\u30b3\u30fc\u30c9\u306b\u8a73\u3057\u304f\u306a\u308d\u3046"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/08\/20200807_blog.png\" alt=\"\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u3092\u8a8d\u8a3c\u3059\u308b\u305f\u3081\u306eSPF\u30ec\u30b3\u30fc\u30c9\u306b\u8a73\u3057\u304f\u306a\u308d\u3046\" width=\"100%\" class=\"aligncenter size-full wp-image-15714\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/08\/20200807_blog.png 650w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/08\/20200807_blog-300x185.png 300w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><\/p>\n<blockquote><p>\u3053\u306e\u8a18\u4e8b\u306f <a href=\"https:\/\/www.twilio.com\/en-us\/blog\/insights\/sender-policy-framework\" target=\"_blank\" rel=\"noopener\">Sender Policy Framework (SPF): A Layer of Protection in Email Infrastructure<\/a> \u306e\u6284\u8a33\u3067\u3059\u3002<\/p><\/blockquote>\n<p>\u8ab0\u304b\u304c\u3042\u306a\u305f\u306e\u30b9\u30de\u30db\u3092\u53d6\u308a\u4e0a\u3052\u3066\u3001\u52dd\u624b\u306bSMS\u3092\u9001\u4fe1\u3057\u3066\u3057\u307e\u3063\u305f\u3089\uff1f\u56f0\u308a\u307e\u3059\u3088\u306d\u30021\u5ea6\u305d\u3093\u306a\u3053\u3068\u304c\u8d77\u304d\u308b\u3068\u3001\u53d7\u4fe1\u8005\u306f\u672c\u5f53\u306b\u3042\u306a\u305f\u304b\u3089\u9001\u3089\u308c\u305fSMS\u306a\u306e\u304b\u305a\u3063\u3068\u7591\u3046\u3088\u3046\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002\u3042\u3063\u3068\u3044\u3046\u9593\u306b\u4fe1\u983c\u95a2\u4fc2\u306f\u5d29\u308c\u53bb\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306fE\u30e1\u30fc\u30eb\u306e\u4e16\u754c\u3067\u3082\u540c\u3058\u3067\u3059\u3002\u6050\u308d\u3057\u3044\u3053\u3068\u306b\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u8a50\u6b3a\u5e2b\u306f\u30e6\u30fc\u30b6\u540d\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u304c\u7121\u304f\u3066\u3082\u3042\u306a\u305f\u306b\u306a\u308a\u3059\u307e\u3057\u3066\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3067\u304d\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u3067\u3082\u5b89\u5fc3\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3042\u306a\u305f\u306e\u30d6\u30e9\u30f3\u30c9\u3068\u30e1\u30fc\u30eb\u306e\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u5b88\u3063\u3066\u304f\u308c\u308b\u3001Sender Policy Framework\uff08SPF\uff09\u3068\u3044\u3046\u4ed5\u7d44\u307f\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>Twilio SendGrid\u306a\u3069\u591a\u304f\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u3001\u30b5\u30fc\u30d0\u304b\u3089\u30b5\u30fc\u30d0\u3078\u30e1\u30fc\u30eb\u3092\u9001\u308b\u969b\u306bSimple Mail Transfer Protocol (SMTP)\u3068\u3044\u3046\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>SMTP\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u5f31\u70b9\u3068\u3057\u3066\u3001\u8ab0\u3067\u3082\u4efb\u610f\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u5dee\u51fa\u4eba\u306b\u306a\u308a\u3059\u307e\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3001\u3068\u3044\u3046\u3082\u306e\u304c\u3042\u308a\u307e\u3059\uff08\u30c9\u30ca\u30eb\u30c9\u30fb\u30c8\u30e9\u30f3\u30d7\u6c0f\u306eX\u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u5927\u91cf\u306b\u4f5c\u6210\u3055\u308c\u308b\u3088\u3046\u306a\u3082\u306e\u3067\u3059\uff09\u3002 \u305d\u306e\u305f\u3081\u53d7\u4fe1\u8005\u306b\u306f\u3001\u672c\u5f53\u306b\u305d\u306e\u5dee\u51fa\u4eba\u304b\u3089\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u3055\u308c\u305f\u304b\u3069\u3046\u304b\u5206\u304b\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u53d7\u4fe1\u8005\u306f\u30e1\u30fc\u30eb\u3092\u4fe1\u983c\u3067\u304d\u306a\u304f\u306a\u308a\u3001\u9001\u4fe1\u8005\u306f\u81ea\u5206\u306e\u30d6\u30e9\u30f3\u30c9\u306b\u306a\u308a\u3059\u307e\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u4e0d\u5b89\u306b\u304b\u3089\u308c\u308b\u2026\u3053\u308c\u306f\u8ab0\u306b\u3068\u3063\u3066\u3082\u826f\u3044\u3053\u3068\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff01 \u3053\u3093\u306a\u6642\u3001DNS\u306eTXT\u30ec\u30b3\u30fc\u30c9\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308bSPF\u30ec\u30b3\u30fc\u30c9\u304c\u89e3\u6c7a\u7b56\u306e\u4e00\u7aef\u3092\u62c5\u3044\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001SPF\u306e\u6982\u8981\u304b\u3089\u30c1\u30a7\u30c3\u30af\u65b9\u6cd5\u307e\u3067\u3001\u3059\u3079\u3066\u3092\u7db2\u7f85\u3057\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h3>SPF\u30ec\u30b3\u30fc\u30c9\u3068\u306f\uff1f<\/h3>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-12863\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/08\/sender-authentication-technology-outline.png\" alt=\"SPF\u30ec\u30b3\u30fc\u30c9\u3068\u306f\uff1f\" width=\"100%\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/08\/sender-authentication-technology-outline.png 1158w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/08\/sender-authentication-technology-outline-300x206.png 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/08\/sender-authentication-technology-outline-768x529.png 768w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/08\/sender-authentication-technology-outline-1024x705.png 1024w\" sizes=\"(max-width: 1158px) 100vw, 1158px\" \/><\/p>\n<p>SPF\u3068\u306f\u3001\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u3072\u3068\u3064\u3067\u3001\u30e1\u30fc\u30eb\u304c\u6b63\u898f\u306e\u30b5\u30fc\u30d0\uff08\uff1d\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u306e\u9001\u4fe1\u304c\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u30b5\u30fc\u30d0\uff09\u304b\u3089\u9001\u4fe1\u3055\u308c\u3066\u3044\u308b\u306e\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308b\u306e\u306b\u6709\u52b9\u3067\u3059\u3002SPF\u304c\u3042\u308c\u3070\u3001ISP\u306f\u3042\u306a\u305f\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u5229\u7528\u3057\u305f\u60aa\u610f\u306e\u3042\u308b\u30e1\u30fc\u30eb\u3092\u5224\u65ad\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>SPF\u3092\u4f7f\u7528\u3059\u308c\u3070\u3001\u53d7\u4fe1\u8005\u306f\u671f\u5f85\u901a\u308a\u306e\u76f8\u624b\u304b\u3089\u30e1\u30fc\u30eb\u304c\u9001\u3089\u308c\u305f\u3068\u78ba\u4fe1\u304c\u6301\u3066\u307e\u3059\u3057\u3001\u9001\u4fe1\u8005\u306f\u306a\u308a\u3059\u307e\u3057\u3084\u30d6\u30e9\u30f3\u30c9\u540d\u3092\u9a19\u3063\u305f\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u3055\u308c\u306a\u3044\u3053\u3068\u3067\u5b89\u5fc3\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u6280\u8853\u7684\u306b\u3044\u3046\u3068\u3001SPF\u30ec\u30b3\u30fc\u30c9\u3068\u306f\u30c9\u30e1\u30a4\u30f3\u306e\u7ba1\u7406\u8005\u304c\u4f5c\u6210\u3059\u308b\u77ed\u3044\u30c6\u30ad\u30b9\u30c8\u30c7\u30fc\u30bf\u3067\u3059\u3002\u3053\u306eTXT\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u4ed6\u306e\u30ec\u30b3\u30fc\u30c9\uff08A\u3001PTR\u3001MX\u306a\u3069\uff09\u3068\u4e00\u7dd2\u306b\u3001<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=19931\" target=\"_blank\" rel=\"noopener\">DNS (domain name system) <\/a>\u3078\u767b\u9332\u3057\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\n&quot;v=spf1 ip4:12.34.56.78 include:example.com -all&quot;\r\n<\/pre>\n<h3>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u4f8b<\/h3>\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u4e00\u822c\u7684\u306a\u4f8b\u3092\u898b\u306a\u304c\u3089\u3001\u305d\u306e\u610f\u5473\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h4>\u4f8b1\uff1a\u57fa\u672c\u7684\u306aSPF\u30ec\u30b3\u30fc\u30c9<\/h4>\n<p>\u57fa\u672c\u7684\u306aSPF\u30ec\u30b3\u30fc\u30c9\u306e\u4f8b\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\nv=spf1 ip4:192.168.0.1 -all\r\n<\/pre>\n<p>\u3053\u306e\u30ec\u30b3\u30fc\u30c9\u3067\u306f\u3001\u30e1\u30fc\u30eb\u304cIP\u30a2\u30c9\u30ec\u30b9192.168.0.1\u304b\u3089\u9001\u4fe1\u3055\u308c\u308b\u3053\u3068\u3092\u8a31\u53ef\u3057\u3001\u305d\u308c\u4ee5\u5916\u306eIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u306e\u9001\u4fe1\u3092\u7981\u6b62\u3057\u3066\u3044\u307e\u3059\uff08-all\uff09\u30021\u3064\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u304b\u3089\u9001\u4fe1\u3057\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3067\u898b\u3089\u308c\u308b\u30b7\u30f3\u30d7\u30eb\u306aSPF\u8a2d\u5b9a\u3067\u3059\u3002<\/p>\n<h4>\u4f8b2\uff1a\u8907\u6570\u306e\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u304c\u3042\u308b\u5834\u5408<\/h4>\n<p>\u8907\u6570\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u304b\u3089\u9001\u4fe1\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001SPF\u30ec\u30b3\u30fc\u30c9\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\nv=spf1 ip4:192.168.0.1 ip4:192.168.0.2 -all\r\n<\/pre>\n<p>\u3053\u306e\u30ec\u30b3\u30fc\u30c9\u3067\u306f\u3001\u30e1\u30fc\u30eb\u304c2\u3064\u306eIP\u30a2\u30c9\u30ec\u30b9\uff08192.168.0.1\u3068192.168.0.2\uff09\u304b\u3089\u9001\u4fe1\u3055\u308c\u308b\u3053\u3068\u3092\u8a31\u53ef\u3057\u3001\u305d\u308c\u4ee5\u5916\u306eIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u306e\u9001\u4fe1\u3092\u7981\u6b62\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h4>\u4f8b3: \u30e1\u30fc\u30eb\u9001\u4fe1\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408<\/h4>\n<p>SendGrid\u306e\u3088\u3046\u306a\u30e1\u30fc\u30eb\u9001\u4fe1\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306aSPF\u30ec\u30b3\u30fc\u30c9\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\nv=spf1 ip4:192.168.0.1 ip4:192.168.0.2 include:sendgrid.net -all\r\n<\/pre>\n<p>\u3053\u306e\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u81ea\u793e\u3067\u7ba1\u7406\u3059\u308b\u30b5\u30fc\u30d0\u304b\u3089\u9001\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u3001SendGrid\u7d4c\u7531\u3067\u9001\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u306e\u4e21\u65b9\u3092\u6b63\u5f53\u3068\u307f\u306a\u3059\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u3088\u3046\u306bSPF\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u9001\u4fe1\u74b0\u5883\u306b\u5fdc\u3058\u3066\u67d4\u8edf\u306b\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002SPF\u30ec\u30b3\u30fc\u30c9\u3092\u9069\u5207\u306b\u8a2d\u5b9a\u3057\u3001\u81ea\u8eab\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u4fdd\u8b77\u3057\u3066\u30e1\u30fc\u30eb\u3092\u78ba\u5b9f\u306b\u53d7\u4fe1\u8005\u306b\u5c4a\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>SPF\u306e\u4ed5\u7d44\u307f<\/h3>\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3092\u898b\u308c\u3070\u3001\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u30e1\u30fc\u30eb\u9001\u4fe1\u3092\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u306e\u306f\u3069\u3046\u3044\u3063\u305f\u30b5\u30fc\u30d0\u306a\u306e\u304b\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u901a\u5e38\u3001SPF\u30ec\u30b3\u30fc\u30c9\u306f\u3001SMTP\u306e\u4e00\u9023\u306e\u901a\u4fe1\u624b\u9806\u306e\u3046\u3061\u3001\u30e1\u30fc\u30eb\u672c\u6587\u304c\u9001\u4fe1\u3055\u308c\u308b\u524d\u306e\u6bb5\u968e\u3067\u554f\u3044\u5408\u308f\u305b\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3059\u308b\u305f\u3081\u306b\u3001\u307e\u305a\u306f\u9001\u4fe1\u30b5\u30fc\u30d0\u3068\u53d7\u4fe1\u30b5\u30fc\u30d0\u306e\u9593\u3067TCP\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u304c\u958b\u304b\u308c\u307e\u3059\u3002\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u304c\u78ba\u7acb\u3057\u305f\u306e\u3061\u3001HELO\u30b3\u30de\u30f3\u30c9\u306b\u3088\u3063\u3066\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u3092\u53d7\u4fe1\u30b5\u30fc\u30d0\u306b\u4f1d\u3048\u307e\u3059\u3002 \u6b21\u306b\u3001MAIL FROM\u30b3\u30de\u30f3\u30c9\u306b\u3088\u3063\u3066\u9001\u4fe1\u5143\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u4f1d\u3048\u307e\u3059\u3002 MAIL FROM\u30b3\u30de\u30f3\u30c9\u3067\u5165\u529b\u3055\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u304cSPF\u30ec\u30b3\u30fc\u30c9\u306e\u30c1\u30a7\u30c3\u30af\u306b\u4f7f\u7528\u3055\u308c\u308b\u30c9\u30e1\u30a4\u30f3\u3067\u3001\u30e1\u30fc\u30eb\u306e\u30a8\u30f3\u30d9\u30ed\u30fc\u30d7From\u3068Return-Path\u30d8\u30c3\u30c0\u306b\u8a2d\u5b9a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070MAIL FROM\u30b3\u30de\u30f3\u30c9\u306b\u304a\u3044\u3066\u3001luke@example.com\u304c\u5165\u529b\u3055\u308c\u305f\u3068\u3057\u307e\u3059\u3002 \u53d7\u4fe1\u30b5\u30fc\u30d0\u306f\u3001example.com\u306e\u30d1\u30d6\u30ea\u30c3\u30afDNS\u30ec\u30b3\u30fc\u30c9\u7fa4\u306e\u3046\u3061\u201dv=spf1\u2033\u3067\u59cb\u307e\u308bTXT\u30ec\u30b3\u30fc\u30c9\u3001\u3059\u306a\u308f\u3061SPF\u30ec\u30b3\u30fc\u30c9\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002SPF\u30ec\u30b3\u30fc\u30c9\u304c\u306a\u3051\u308c\u3070\u8a8d\u8a3c\u306f\u901a\u308a\u3001\u8907\u6570\u3042\u308c\u3070\u30a8\u30e9\u30fc\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002SPF\u30ec\u30b3\u30fc\u30c9\u304c\u4e00\u3064\u3060\u3051\u306a\u3089\u3070\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u306f\u305d\u308c\u306b\u5f93\u3063\u3066\u3001\u9001\u4fe1\u30b5\u30fc\u30d0\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u8a8d\u8a3c\u3059\u308b\u304b\u3069\u3046\u304b\u5224\u65ad\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u3068\u304d\u30011\u4ef6\u306eSPF\u30ec\u30b3\u30fc\u30c9\u304c\u898b\u3064\u304b\u3063\u305f\u3068\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\n&quot;v=spf1 ip4:12.34.56.78 include:example.com -all&quot;\r\n<\/pre>\n<p>\u53d7\u4fe1\u30b5\u30fc\u30d0\u306f\u3001\u9001\u4fe1\u30b5\u30fc\u30d0\u306eIP\u30a2\u30c9\u30ec\u30b9\u304cSPF\u30ec\u30b3\u30fc\u30c9\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002 IP\u30a2\u30c9\u30ec\u30b9\u304c\u542b\u307e\u308c\u3066\u3044\u308c\u3070SPF\u8a8d\u8a3c\u306f\u901a\u308a\u307e\u3059\u3002<\/p>\n<h3>SPF\u30ec\u30b3\u30fc\u30c9\u3092\u5f62\u4f5c\u308b\u3082\u306e<\/h3>\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306f\u69d8\u3005\u306a\u6a5f\u69cb(mechanism)\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u3063\u3066\u51fa\u6765\u3066\u3044\u307e\u3059\u3002\u5404\u6a5f\u69cb\u306f\u3001\u5de6\u5074\u306b\u66f8\u304b\u308c\u3066\u3044\u308b\u3082\u306e\u304b\u3089\u9806\u756a\u306b\u8a55\u4fa1\u3055\u308c\u307e\u3059\u3002<\/p>\n<h4>include<\/h4>\n<p>include\u6a5f\u69cb\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u5f15\u6570\u3068\u3057\u307e\u3059\u3002<br \/>\ninclude\u5148\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3067\u8a8d\u8a3c\u51e6\u7406\u304c\u901a\u308b\u306a\u3089\u3070\u3001\u8a8d\u8a3c\u3092\u901a\u3057\u307e\u3059\u3002include\u5148\u3067\u3055\u3089\u306binclude\u6a5f\u69cb\u304c\u3042\u3063\u305f\u5834\u5408\u306f\u3001\u518d\u5e30\u7684\u306b\u8a55\u4fa1\u3057\u307e\u3059\u3002<\/p>\n<h4>A<\/h4>\n<p>a\u6a5f\u69cb\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u5f15\u6570\u3068\u3057\u307e\u3059\u3002<br \/>\n\u9001\u4fe1\u30b5\u30fc\u30d0\u306eIP\u30a2\u30c9\u30ec\u30b9\u304c\u3001\u4e0e\u3048\u3089\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u306eA\u30ec\u30b3\u30fc\u30c9\u3082\u3057\u304f\u306fAAAA\u30ec\u30b3\u30fc\u30c9\u3067\u89e3\u6c7a\u3055\u308c\u308b\u306a\u3089\u3070\u3001\u8a8d\u8a3c\u3092\u901a\u3057\u307e\u3059\u3002<\/p>\n<h4>MX<\/h4>\n<p>mx\u6a5f\u69cb\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u5f15\u6570\u3068\u3057\u307e\u3059\u3002<br \/>\n\u9001\u4fe1\u30b5\u30fc\u30d0\u306eIP\u30a2\u30c9\u30ec\u30b9\u304c\u3001\u4e0e\u3048\u3089\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u306eMX\u30ec\u30b3\u30fc\u30c9\u3067\u89e3\u6c7a\u3055\u308c\u308b\u306a\u3089\u3070\u3001\u8a8d\u8a3c\u3092\u901a\u3057\u307e\u3059\u3002<\/p>\n<h4>IP4\u3001IP6<\/h4>\n<p>IP4\u6a5f\u69cb\u3068IP6\u6a5f\u69cb\u306f\u3001IP\u30a2\u30c9\u30ec\u30b9\u3092\u5f15\u6570\u3068\u3057\u307e\u3059\u3002<br \/>\nCIDR\u8a18\u6cd5\u306b\u3088\u308b\u30d6\u30ed\u30c3\u30af\u6307\u5b9a(\u4f8b 192.168.0.0\/16)\u3082\u53ef\u80fd\u3067\u3059\u3002\u9001\u4fe1\u30b5\u30fc\u30d0\u306eIP\u30a2\u30c9\u30ec\u30b9\u304c\u3001\u4e0e\u3048\u3089\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9\u306b\u542b\u307e\u308c\u308b\u306a\u3089\u3070\u3001\u8a8d\u8a3c\u3092\u901a\u3057\u307e\u3059\u3002<\/p>\n<h4>PTR<\/h4>\n<p>ptr\u6a5f\u69cb\u306f\u4f7f\u308f\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<br \/>\n\u3044\u304f\u3064\u304b\u306e\u6280\u8853\u7684\u306a\u7406\u7531\u306b\u3088\u308a\u30a8\u30e9\u30fc\u3068\u306a\u3063\u3066\u3057\u307e\u3046\u5834\u5408\u304c\u3042\u308a\u3001\u540d\u524d\u89e3\u6c7a\u306e\u305f\u3081\u306b\u53d7\u4fe1\u30b5\u30fc\u30d0\u306e\u30e1\u30e2\u30ea\u3068\u5e2f\u57df\u3092\u591a\u304f\u6d88\u8cbb\u3057\u307e\u3059\u3002\u53d7\u4fe1\u30b5\u30fc\u30d0\u306b\u3088\u3063\u3066\u306f\u3001ptr\u6a5f\u69cb\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3060\u3051\u3067\u3001\u8a8d\u8a3c\u3092\u5f3e\u3044\u3066\u3057\u307e\u3046\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<h4>ALL<\/h4>\n<p>all\u6a5f\u69cb\u306f\u3001\u5f15\u6570\u3092\u53d6\u3089\u305a\u5e38\u306b\u8a8d\u8a3c\u3092\u901a\u3057\u307e\u3059\u3002<br \/>\nSPF\u30ec\u30b3\u30fc\u30c9\u306e\u672b\u5c3e\u3067\u4f7f\u3046\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u8a8d\u8a3c\u7d50\u679c\u3092\u5931\u6557\u306b\u3059\u308b\u691c\u8a3c\u5b50(qualifier)\u3068\u7d44\u307f\u3042\u308f\u305b\u305f\u300c-all\u300d\u306f\u3001\u300c\u3053\u308c\u307e\u3067\u306e\u6a5f\u69cb\u306b\u3088\u3063\u3066\u8a8d\u8a3c\u304c\u901a\u3089\u306a\u304b\u3063\u305fIP\u30a2\u30c9\u30ec\u30b9\u306f\u3001\u5168\u3066\u8a8d\u8a3c\u5931\u6557\u3059\u308b\u300d\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n<h4>REDIRECT<\/h4>\n<p>redirect\u306f\u3001\u6b63\u78ba\u306b\u306f\u6a5f\u69cb\u3067\u306f\u306a\u304f\u5909\u66f4\u5b50(modifier)\u3067\u3059\u3002<br \/>\nredirect\u5148\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3092\u4f7f\u3063\u3066\u8a8d\u8a3c\u51e6\u7406\u3092\u884c\u3044\u307e\u3059\u3002redirect\u5909\u66f4\u5b50\u3092\u5229\u7528\u3059\u308b\u306a\u3089\u3070\u3001\u4ed6\u306e\u6a5f\u69cb\u306f\u4f7f\u308f\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002redirect\u5909\u66f4\u5b50\u3092\u4f7f\u3063\u305f\u30b7\u30f3\u30d7\u30eb\u306a\u4f8b\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\n&quot;v=spf1 redirect:example.com&quot;\r\n<\/pre>\n<p>\u6a5f\u69cb\u306e\u3046\u3061include\u3001a\u3001mx\u3001ptr\u3001exists\u3001redirect\u306f\u3001DNS\u306e\u554f\u3044\u5408\u308f\u305b\u304c\u5fc5\u8981\u306b\u306a\u308b\u305f\u3081\u3001\u4e00\u3064\u306eSPF\u30ec\u30b3\u30fc\u30c9\u5185\u3067\u306e\u4f7f\u7528\u306f10\u56de\u4ee5\u4e0b\u306b\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3001\u3068\u3044\u3046\u5236\u9650\u304c\u3042\u308a\u307e\u3059\u3002\u4e00\u898b\u300110\u56de\u307e\u3067\u3067\u3042\u308c\u3070\u5341\u5206\u306a\u4f59\u88d5\u304c\u3042\u308b\u3088\u3046\u306b\u601d\u308f\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001include\u6a5f\u69cb\u306f\u518d\u5e30\u7684\u306b\u8a55\u4fa1\u3055\u308c\u308b\u305f\u3081\u3001\u305f\u3068\u3048\u3070include\u5148\u306eSPF\u30ec\u30b3\u30fc\u30c9\u304c\u3055\u3089\u306b2\u3064\u306einclude\u6a5f\u69cb\u3092\u542b\u3093\u3067\u3044\u305f\u306a\u3089\u3070\u30013\u56de\u3068\u3057\u3066\u30ab\u30a6\u30f3\u30c8\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u306f\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<h3>SendGrid\u30e6\u30fc\u30b6\u304c\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3053\u3068<\/h3>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-12865\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/08\/SGA_Authenticate_TW.png\" alt=\"SendGrid\u30e6\u30fc\u30b6\u304c\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3053\u3068\" width=\"100%\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/08\/SGA_Authenticate_TW.png 1024w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/08\/SGA_Authenticate_TW-300x150.png 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/08\/SGA_Authenticate_TW-768x384.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p>\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u306e\u53c2\u7167\u5148\u3092SendGrid\u30c9\u30e1\u30a4\u30f3(sendgrid.net)\u306b\u5411\u3051\u308b\u305f\u3081\u3001CNAME\u30ec\u30b3\u30fc\u30c9\u3092\u767b\u9332\u3057\u307e\u3059\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001SMTP\u306e\u53d7\u4fe1\u30b5\u30fc\u30d0\u306f\u3001\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3067\u306f\u306a\u304f\u3001CNAME\u3067\u6307\u5b9a\u3055\u308c\u3066\u3044\u308bSendGrid\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>DNS\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u5185\u5bb9\u306b\u3064\u3044\u3066\u3001\u8a73\u3057\u304f\u306f\u300e<a href=\"https:\/\/support.sendgrid.kke.co.jp\/hc\/ja\/articles\/203703439\" target=\"_blank\" rel=\"noopener\">\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u5229\u7528\uff08Sender Authentication\uff09\u304a\u3088\u3073\u8a2d\u5b9a\u6642\u306eDNS\u30ec\u30b3\u30fc\u30c9\u306b\u3064\u3044\u3066\u3001\u8a73\u3057\u304f\u6559\u3048\u3066\u304f\u3060\u3055\u3044<\/a>\u300f\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u30c6\u30b9\u30c8\u65b9\u6cd5<\/h3>\n<p>\u3059\u3079\u3066\u306eISP\u304cSPF\u8a8d\u8a3c\u3092\u5c0e\u5165\u3057\u3066\u3044\u308b\u8a33\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u8a8d\u8a3c\u304c\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306f\u30d6\u30ed\u30c3\u30af\u3055\u308c\u305f\u308a\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u308c\u3089\u308c\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a18\u8ff0\u65b9\u6cd5\u306f\u8907\u6570\u3042\u308a\u3001\u5c11\u3057\u305a\u3064\u7570\u306a\u308a\u307e\u3059\u3002\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002 \u30ec\u30b3\u30fc\u30c9\u306e\u691c\u8a3c\u306b\u5f79\u7acb\u3064\u30c4\u30fc\u30eb\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/www.kitterman.com\/spf\/validate.html\" target=\"_blank\" rel=\"noopener\">Scott Kitterman\u2019s SPF Testing Tools<\/a>\uff1a\u3042\u306a\u305f\u306e\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u304c\u3059\u3067\u306b\u5b58\u5728\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001SPF\u30ec\u30b3\u30fc\u30c9\u306e\u6709\u52b9\u6027\u3084\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30c6\u30b9\u30c8\u3092\u884c\u3048\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/mxtoolbox.com\/spf.aspx\" target=\"_blank\" rel=\"noopener\">SPF Record Check<\/a>\uff1aSPF\u30ec\u30b3\u30fc\u30c9\u306e\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u3068\u691c\u8a3c\u304c\u884c\u3048\u307e\u3059\u3002\u5165\u529b\u3055\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u306b\u5bfe\u3057\u3066\u8a3a\u65ad\u30c6\u30b9\u30c8\u3092\u5b9f\u884c\u3057\u3001\u914d\u4fe1\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u30a8\u30e9\u30fc\u3092\u5f37\u8abf\u8868\u793a\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>SPF\u306e\u8a2d\u5b9a\u306f\u7387\u5148\u3057\u3066\u5b9f\u65bd\u3057\u3088\u3046<\/h3>\n<p>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u8a50\u6b3a\u5e2b\u306f\u3001SPF\u304c\u8a2d\u5b9a\u6e08\u307f\u3067\u3042\u308b\u30c9\u30e1\u30a4\u30f3\u3088\u308a\u3082\u672a\u8a2d\u5b9a\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u6a19\u7684\u306b\u3057\u307e\u3059\u3002 SPF\u306f\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u3092\u9632\u3050\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u304c\u3001\u653b\u6483\u3092\u53d7\u3051\u306b\u304f\u304f\u3059\u308b\u6291\u6b62\u529b\u306b\u306a\u308b\u306e\u3067\u3059\u3002\u305d\u308c\u3092\u671b\u307e\u306a\u3044\u4eba\u306f\u3044\u306a\u3044\u3067\u3059\u3088\u306d\uff1fSPF\u30ec\u30b3\u30fc\u30c9\u306e\u4f5c\u6210\u3092\u63a8\u5968\u3059\u308b\u306e\u306f\u3053\u306e\u305f\u3081\u3067\u3059\u3002<\/p>\n<p>SPF\u3092Sender ID\u3084<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=2044\" target=\"_blank\" rel=\"noopener\">DKIM<\/a>\u3001<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=3137\" target=\"_blank\" rel=\"noopener\">DMARC<\/a>\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3059\u308c\u3070\u3001\u30b9\u30d1\u30e0\u9001\u4fe1\u8005\u304b\u3089\u306e\u30e1\u30fc\u30eb\u3092\u9069\u5207\u306b\u8b58\u5225\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30e1\u30fc\u30eb\u306f\u3001\u3068\u3066\u3082\u5927\u5207\u306a\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u30c4\u30fc\u30eb\u3067\u3059\u3002\u30e6\u30fc\u30b6\u304b\u3089\u306e\u4fe1\u983c\u3092\u4fdd\u3061\u3001\u30e1\u30fc\u30eb\u3092\u78ba\u5b9f\u306b\u5c4a\u3051\u308b\u305f\u3081\u306b\u4e0b\u8a18\u30ea\u30f3\u30af\u3082\u305c\u3072\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=2044\" target=\"_blank\" rel=\"noopener\">DKIM\u3068\u306f\uff1f<\/a><\/li>\n<li><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=3137\" target=\"_blank\" rel=\"noopener\">DMARC\u3068\u306f\uff1f\u30ec\u30b3\u30fc\u30c9\u306e\u8aad\u307f\u65b9\u3084\u5bfe\u5fdc\u65b9\u6cd5\u3092\u89e3\u8aac<\/a><\/li>\n<li><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=10121\" target=\"_blank\" rel=\"noopener\">SPF\u3001DKIM\u306e\u7279\u5fb4\u3068\u9055\u3044<\/a><\/li>\n<li><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=10883\" target=\"_blank\" rel=\"noopener\">SendGrid\u304b\u3089\u30e1\u30fc\u30eb\u9001\u4fe1\u3059\u308b\u5834\u5408\u306eSPF\u3068DKIM\u306e\u8a8d\u8a3c\u306e\u4ed5\u7d44\u307f &#8211; \u524d\u7de8<\/a><\/li>\n<li><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=10894\" target=\"_blank\" rel=\"noopener\">SendGrid\u304b\u3089\u30e1\u30fc\u30eb\u9001\u4fe1\u3059\u308b\u5834\u5408\u306eSPF\u3068DKIM\u306e\u8a8d\u8a3c\u306e\u4ed5\u7d44\u307f &#8211; \u5f8c\u7de8<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u306e\u8a18\u4e8b\u306f Sender Policy Framework (SPF): A Layer of Protection in Email Infrastructure \u306e\u6284\u8a33\u3067\u3059\u3002 \u8ab0\u304b\u304c\u3042\u306a\u305f\u306e\u30b9\u30de\u30db\u3092\u53d6\u308a\u4e0a\u3052\u3066\u3001\u52dd\u624b\u306b <a class=\"read-more\" href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=3509\">&#8230;\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":2,"featured_media":20166,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[9,11],"tags":[],"class_list":["post-3509","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-best-practices","category-technical"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3509","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3509"}],"version-history":[{"count":26,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3509\/revisions"}],"predecessor-version":[{"id":20727,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3509\/revisions\/20727"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/media\/20166"}],"wp:attachment":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3509"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3509"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3509"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}