{"version":"1.0","title":"Null MX\u30ec\u30b3\u30fc\u30c9","author_url":"https://blog.hatena.ne.jp/kurita1/","width":"100%","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkurita1.hatenadiary.com%2Fentry%2F2025%2F01%2F23%2F143018\" title=\"Null MX\u30ec\u30b3\u30fc\u30c9 - external storage 1\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","image_url":null,"description":"3. MX (Mail Exchange) \u306e\u8a2d\u5b9a MX\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u306b\u5bfe\u3059\u308b\u30e1\u30fc\u30eb\u306e\u914d\u9001\u5148\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002 \u30e1\u30fc\u30eb\u3092\u9001\u53d7\u4fe1\u3057\u306a\u3044\u30c9\u30e1\u30a4\u30f3\u306e\u5834\u5408\u3001MX\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u5b9b\u306e\u3059\u3079\u3066\u306e\u30e1\u30fc\u30eb\u304c\u53d7\u3051\u53d6\u3089\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 RFC7505\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306bNull MX\u3068\u3044\u3046\u5b9a\u7fa9\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002 MX 0 .https://maildata.jp/tips/defensive_domain.html RFC 7505 - A \"Null MX\" No Service Resource Record for Domains That Accept No Mail\u2026","author_name":"kurita1","height":"190","blog_title":"external storage 1","published":"2025-01-23 14:30:18","url":"https://kurita1.hatenadiary.com/entry/2025/01/23/143018","blog_url":"https://kurita1.hatenadiary.com/","categories":[],"type":"rich"}