{"categories":["\u5168\u4f53\u3092\u307f\u308b","\u601d\u8003\u3068\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3","\u7d4c\u6e08\u30fb\u7d4c\u55b6\u30d3\u30b8\u30cd\u30b9","\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306eCIA\u3068\u7279\u6027","\u73fe\u4ee3\u793e\u4f1a\u3068\u5fc3\u7406\uff08\u793e\u4f1a\u30fb\u884c\u52d5\uff09"],"author_name":"slowtrain2013","description":"\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u5bfe\u7b56\u306e\uff33\uff30\uff26 \u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u300c\u306a\u308a\u3059\u307e\u308a\u300d\u304c\u6a2a\u884c\u3057\u3066\u3044\u307e\u3059\u3002\u96fb\u5b50\u30e1\u30fc\u30eb\u306f\u9001\u4fe1\u5143\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304c\u81ea\u7531\u306b\u8a2d\u5b9a\u304c\u51fa\u6765\u308b\u305f\u3081\u3067\u3059\u3002\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u306e\u3088\u3046\u306a\u8ff7\u60d1\u30e1\u30fc\u30eb\u304c\u5897\u3048\u308b\u3068\u3001\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u304c\u3055\u304c\u308a\u307e\u3059\u3002\u3053\u306e\u8ab2\u984c\u3092\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5\u306e\u3072\u3068\u3064\u306b\u3001SPF (Sender Policy Framework)\u304c\u3042\u308a\u307e\u3059\u3002SPF\u306fDNS\u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u304c\u8a50\u79f0\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3092\u691c\u67fb\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002 DNS\u306bSPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u9001\u4fe1\u3055\u308c\u3066\u304d\u305f\u30e1\u30fc\u30eb\u304cDNS\u306b\u8a18\u8f09\u304c\u3042\u308b\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u306e\u30e1\u30fc\u30eb\u304b\u3092\u5224\u65ad\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002SPF\u306e\u30a4\u30e1\u30fc\u30b8\u3092\u66f8\u304d\u307e\u3059\u3002\u4e0b\u56f3\u306e\u9752\u7dda\u306fB\u793e\u306e\u793e\u54e1\u304cA\u793e\u2026","author_url":"https://blog.hatena.ne.jp/slowtrain2013/","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.three-wise-monkeys.com%2Fentry%2F2021%2F09%2F12%2F080000\" title=\"\uff33\uff30\uff26\u304b\u3089\u8003\u3048\u308b\u300c\u6055\u300d - \u53e1\u667a\u306e\u4e09\u733f\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/s/slowtrain2013/20210712/20210712010635.jpg","published":"2021-09-12 08:00:00","version":"1.0","height":"190","blog_url":"https://www.three-wise-monkeys.com/","width":"100%","provider_url":"https://hatena.blog","blog_title":"\u53e1\u667a\u306e\u4e09\u733f","url":"https://www.three-wise-monkeys.com/entry/2021/09/12/080000","type":"rich","title":"\uff33\uff30\uff26\u304b\u3089\u8003\u3048\u308b\u300c\u6055\u300d"}