{"type":"rich","height":"190","blog_url":"https://tech-book.precena.co.jp/","author_url":"https://blog.hatena.ne.jp/precena_engineer/","width":"100%","published":"2025-04-01 00:00:00","provider_url":"https://hatena.blog","categories":["\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3","Mail"],"description":"\u306f\u3058\u3081\u306b \u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30e1\u30fc\u30eb\u9001\u4fe1\u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u5b9a\u6642\u306b\u3001\u307b\u307c\u5fc5\u305a\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u306b\u306a\u308bSPF\u3001DKIM\u3001DMARC\u306b\u3064\u3044\u3066\u3001\u77e5\u8b58\u306e\u6574\u7406\u3068\u5171\u6709\u306e\u305f\u3081\u306b\u6982\u8981\u3084\u52b9\u679c\u3001\u8a2d\u5b9a\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002 SPF SPF\u306f\u3001Sender Policy Framework\u306e\u7565\u3067\u3001\u30c9\u30e1\u30a4\u30f3\u306e\u6240\u6709\u8005\u304c\u300c\u81ea\u5206\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u9001\u4fe1\u3092\u8a31\u53ef\u3059\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\uff08IP\u30a2\u30c9\u30ec\u30b9\u3084\u30db\u30b9\u30c8\u540d\uff09\u300d\u3092DNS\u306b\u516c\u958b\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002 2006\u5e74\u306bRFC4408\u3067\u5b9a\u7fa9\u3055\u308c\u3001RFC7208\u3067\u6700\u65b0\u7248\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002 SPF\u306e\u52b9\u679c SPF\u306e\u4ed5\u7d44\u307f\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u4ee5\u4e0b\u306e\u52b9\u679c\u304c\u5f97\u3089\u308c\u307e\u3059\u3002 \u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u306e\u6b63\u5f53\u6027\u3092\u53d7\u4fe1\u5074\u304c\u691c\u8a3c\u3067\u304d\u308b \u653b\u6483\u8005\u304c\u7279\u5b9a\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u507d\u88c5\u3057\u3066\u2026","blog_title":"Precena Tech Book","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftech-book.precena.co.jp%2Fentry%2Fsecurity%2Fmail%2Fspf_dkim_dmarc\" title=\"SPF\u3001DKIM\u3001DMARC\u3092\u4f7f\u7528\u3057\u305f\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56 - Precena Tech Book\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","version":"1.0","author_name":"precena_engineer","image_url":null,"url":"https://tech-book.precena.co.jp/entry/security/mail/spf_dkim_dmarc","title":"SPF\u3001DKIM\u3001DMARC\u3092\u4f7f\u7528\u3057\u305f\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56"}