救命啊！如何解決 550 Backscatter Protection?
本文章最後由 jtain 於 2010-2-26 02:35 PM 編輯因為公司網站換IP，結果出現錯誤。
我公司網站是透過公司的 mdaemon 寄信進來，所以我原先有特別設定了白名單。
但昨天晚上換IP後，我今天設定之後還是有問題。
Fri 2010-02-26 13:45:10: Session 9273; child 3; thread 2724
Fri 2010-02-26 13:45:10: Accepting SMTP connection from
Fri 2010-02-26 13:45:10: --> 220 x.com.tw ESMTP MDaemon 9.6.3; Fri, 26 Feb 2010 13:45:10 +0800
Fri 2010-02-26 13:45:10: <-- EHLO x.x.com.tw
Fri 2010-02-26 13:45:10: --> 250-x.com.tw Hello x.x.com.tw, pleased to meet you
Fri 2010-02-26 13:45:10: --> 250-ETRN
Fri 2010-02-26 13:45:10: --> 250-AUTH=LOGIN
Fri 2010-02-26 13:45:10: --> 250-AUTH LOGIN CRAM-MD5
Fri 2010-02-26 13:45:10: --> 250-8BITMIME
Fri 2010-02-26 13:45:10: --> 250 SIZE 8192000
Fri 2010-02-26 13:45:10: <-- MAIL FROM:<> SIZE=932
Fri 2010-02-26 13:45:10: Performing SPF lookup (x.x.com.tw / 203.160.x.x)
Fri 2010-02-26 13:45:10: *Result: none; no SPF record in DNS
Fri 2010-02-26 13:45:10: ---- End SPF results
Fri 2010-02-26 13:45:10: --> 250 <>, Sender ok
Fri 2010-02-26 13:45:10: <-- RCPT TO:<[email protected]>
Fri 2010-02-26 13:45:10: Performing Backscatter Protection...
Fri 2010-02-26 13:45:10: *Address: [email protected]
Fri 2010-02-26 13:45:10: *Verifier: <none>
Fri 2010-02-26 13:45:10: *Result: fail
Fri 2010-02-26 13:45:10: *Reject: Yes
Fri 2010-02-26 13:45:10: --- End Backscatter Protection
Fri 2010-02-26 13:45:10: --> 550 Backscatter Protection detected an invalid or expired email address
Fri 2010-02-26 13:45:10: <-- RCPT TO:<[email protected]>
Fri 2010-02-26 13:45:10: Performing Backscatter Protection...
Fri 2010-02-26 13:45:10: *Address: [email protected]
Fri 2010-02-26 13:45:10: *Verifier: <none>
Fri 2010-02-26 13:45:10: *Result: fail
Fri 2010-02-26 13:45:10: *Reject: Yes
Fri 2010-02-26 13:45:10: --- End Backscatter Protection
Fri 2010-02-26 13:45:10: --> 550 Backscatter Protection detected an invalid or expired email address
Fri 2010-02-26 13:45:10: <-- RCPT TO:<[email protected]>
Fri 2010-02-26 13:45:10: Performing Backscatter Protection...
Fri 2010-02-26 13:45:10: *Address: [email protected]
Fri 2010-02-26 13:45:10: *Verifier: <none>
Fri 2010-02-26 13:45:10: *Result: fail
Fri 2010-02-26 13:45:10: *Reject: Yes
Fri 2010-02-26 13:45:10: --- End Backscatter Protection
Fri 2010-02-26 13:45:10: --> 550 Backscatter Protection detected an invalid or expired email address
Fri 2010-02-26 13:45:10: <-- RSET
Fri 2010-02-26 13:45:10: --> 250 RSET? Well, ok.
Fri 2010-02-26 13:45:10: <-- QUIT
Fri 2010-02-26 13:45:10: --> 221 See ya in cyberspace
Fri 2010-02-26 13:45:10: SMTP session terminated (Bytes in/out: 161/505)
Fri 2010-02-26 13:45:10: ---------- 你沒有說上面的 log 是誰寄給誰...還有，Backscatter Protection 似乎跟 IP 無關。你可能要先去了解一下 Backscatter Protection 作用是什麼。 那個網站是有關 user 的一些訊息，如：註冊、錯誤回報等等。
上面的 log 是寄進公司內有關的客服。
我有打開 mdaemon 的反向散射保護，難不成我得關掉...
因為我公司的網站是 hinet 托管... http://www.zensoftware.co.uk/kb/article.aspx?id=10212
希望有點幫助!
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