postfix 如何限制使用者寄信或拒收來信
如何限制某一使用者從 Postfix 寄信
在 /etc/postfix/main.cf 中加入 smtpd_sender_restrictions = hash:/etc/postfix/access
在 /etc/postfix/access 加入 user@ REJECT sorry,we don't provide smtp service for you
更新 access.db
postmap /etc/postfix/access
重啟 postfix
/etc/rc.d/init.d/postfix restart
參考：http://tsongyao.blogspot.tw/2009/03/postfix.html
看了一些網頁解說,及自己的測試,發現 smtpd_sender_restrictions 偵測的是原始信件來源,也就是 From: 後面的位址,所以不論是我們寄信,或者是對方寄信的 email 位址都有效,假設 access 如下:
info.org.tw REJECT sorry,we don't provide smtp service for you
info.org.tw discard
info@ discard
那麼不管是我門寄信,或者是對方來信,只要來源 email 位址符合都有效,也就是 From: 後面的位址
而用 REJECT 會回一封信回去, discard 會直接丟棄,不理它
迴響
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