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迷惑メールに引っかからないdns設定

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共有のレンタルサーバなど、IPアドレスが同じで複数ドメインを扱うことで迷惑メールフィルタに捨てられることがある場合の対策

というか、もはやMXやAレコードと並ぶ必須の設定項目らしいのでメモ

借りてるサーバのGLOBAL IPが192.168.10.2 だった場合

DNS設定に以下のレコードを追加

IN TXT "v=spf1 +ip4:192.168.10.2 -all"

wikipediaに必要十分な情報有りました

はぁ。もっと善意に基づいて運用したいなぁ。

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