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assylias
Asked: 2020-11-17 08:37:55 +0800 CST

Postfix 在 451 错误/灰名单后不重试

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我有一个使用 postfix/dovecot 的转发服务器，它接收来自第三方邮件客户端（比如 gmail）的电子邮件并将电子邮件转发给最终收件人。

我注意到当收件人电子邮件服务器使用灰名单时，postfix 不会像我预期的那样在几分钟后尝试重新发送电子邮件。我所有的backoff设置都使用默认值，bounce_queue_lifetime = 0虽然我不认为这是相关的。

以下是此类灰名单响应的日志摘录。似乎有几件事出错了：重试几乎是立即的，然后服务器向自己发送一条消息，该消息被退回等等......没有与此消息相关的进一步日志条目。

任何想法如何解决这个问题并让 postfix/dovecot 在几分钟后重试？

Nov 16 15:55:46 mail2 postfix/submission/smtpd[24769]: connect from mail-yb1-f174.google.com[209.85.219.174]
Nov 16 15:55:46 mail2 postfix/submission/smtpd[24769]: Anonymous TLS connection established from mail-yb1-f174.google.com[209.85.219.174]: TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)
Nov 16 15:55:47 mail2 postfix/submission/smtpd[24769]: 50DB53E8EE: client=mail-yb1-f174.google.com[209.85.219.174], sasl_method=PLAIN, sasl_username=xxxx
Nov 16 15:55:47 mail2 postfix/cleanup[24775]: 50DB53E8EE: message-id=<CAOPu7Eg7445dbRTT+_EV7s8=0de0=ce0cJmqOO_49-gXokdXLg@mail.gmail.com>
Nov 16 15:55:47 mail2 opendkim[1011]: 50DB53E8EE: DKIM-Signature field added
Nov 16 15:55:47 mail2 postfix/qmgr[24745]: 50DB53E8EE: from=<[email protected]>, size=2483, nrcpt=1 (queue active)
Nov 16 15:55:47 mail2 postfix/submission/smtpd[24769]: disconnect from mail-yb1-f174.google.com[209.85.219.174] ehlo=2 starttls=1 auth=1 mail=1 rcpt=1 data=1 quit=1 commands=8
Nov 16 15:55:48 mail2 postfix/smtp[24776]: 50DB53E8EE: host je-smtp-inbound-1.mimecast-offshore.com[213.167.75.36] said: 451 Internal resource temporarily unavailable - https://community.mimecast.com/docs/DOC-1369#451 [FrAlAYP7MGavfrTQVnqFbQ.jer5] (in reply to RCPT TO command)
Nov 16 15:55:49 mail2 postfix/smtp[24776]: 50DB53E8EE: to=<[email protected]>, relay=je-smtp-inbound-1.mimecast-offshore.com[213.167.81.36]:25, delay=1.7, delays=0.26/0.02/1.3/0.19, dsn=4.0.0, status=deferred (host je-smtp-inbound-1.mimecast-offshore.com[213.167.81.36] said: 451 Internal resource temporarily unavailable - https://community.mimecast.com/docs/DOC-1369#451 [CrknqwFZOxmiUomNi_j5xw.jer4] (in reply to RCPT TO command))
Nov 16 15:56:01 mail2 postfix/pickup[24746]: 404853F264: uid=0 from=<[email protected]>
Nov 16 15:56:01 mail2 postfix/cleanup[24775]: 404853F264: message-id=<CAOPu7Eg7445dbRTT+_EV7s8=0de0=ce0cJmqOO_49-gXokdXLg@mail.gmail.com>
Nov 16 15:56:01 mail2 opendkim[1011]: 404853F264: DKIM-Signature field added
Nov 16 15:56:01 mail2 postfix/postsuper[24805]: 50DB53E8EE: removed
Nov 16 15:56:01 mail2 postfix/postsuper[24805]: Deleted: 1 message
Nov 16 15:56:01 mail2 postfix/qmgr[24745]: 404853F264: from=<[email protected]>, size=2955, nrcpt=1 (queue active)
Nov 16 15:56:01 mail2 postfix/pickup[24746]: 6189F3E8EE: uid=0 from=<root>
Nov 16 15:56:01 mail2 postfix/cleanup[24775]: 6189F3E8EE: message-id=<20201116155601.6189F3E8EE@POSTFIX_SERVER>
Nov 16 15:56:01 mail2 opendkim[1011]: 6189F3E8EE: no signing table match for 'root@POSTFIX_SERVER'
Nov 16 15:56:01 mail2 opendkim[1011]: 6189F3E8EE: no signature data
Nov 16 15:56:01 mail2 postfix/qmgr[24745]: 6189F3E8EE: from=<root@POSTFIX_SERVER>, size=787, nrcpt=1 (queue active)
Nov 16 15:56:01 mail2 postfix/postscreen[24810]: CONNECT from [POSTFIX_SERVER]:50962 to [POSTFIX_SERVER]:25
Nov 16 15:56:01 mail2 postfix/smtp[24776]: 404853F264: to=<[email protected]>, relay=je-smtp-inbound-1.mimecast-offshore.com[213.167.81.36]:25, delay=0.63, delays=0.08/0/0.45/0.1, dsn=5.0.0, status=bounced (host je-smtp-inbound-1.mimecast-offshore.com[213.167.81.36] said: 550 Anti-Spoofing policy - Inbound not allowed - https://community.mimecast.com/docs/DOC-1369#550 [22wPIJELPUOp5GuDx4lfGw.jer2] (in reply to RCPT TO command))
Nov 16 15:56:01 mail2 postfix/cleanup[24775]: ED7723F26B: message-id=<20201116155601.ED7723F26B@POSTFIX_SERVER>
Nov 16 15:56:01 mail2 postfix/bounce[24818]: 404853F264: sender non-delivery notification: ED7723F26B
Nov 16 15:56:01 mail2 postfix/qmgr[24745]: ED7723F26B: from=<>, size=5588, nrcpt=1 (queue active)
Nov 16 15:56:01 mail2 postfix/qmgr[24745]: 404853F264: removed
Nov 16 15:56:02 mail2 postfix/postscreen[24810]: PASS OLD [POSTFIX_SERVER]:50962
Nov 16 15:56:02 mail2 postfix/smtpd[24819]: connect from POSTFIX_SERVER
Nov 16 15:56:02 mail2 dovecot: auth: Debug: auth client connected (pid=0)
Nov 16 15:56:02 mail2 postfix/smtp[24809]: warning: host POSTFIX_SERVER:25 greeted me with my own hostname POSTFIX_SERVER
Nov 16 15:56:02 mail2 postfix/smtp[24809]: warning: host POSTFIX_SERVER:25 replied to HELO/EHLO with my own hostname POSTFIX_SERVER
Nov 16 15:56:02 mail2 postfix/smtp[24809]: 6189F3E8EE: to=<root@POSTFIX_SERVER>, orig_to=<root>, relay=POSTFIX_SERVER:25, delay=0.72, delays=0.04/0.09/0.59/0, dsn=5.4.6, status=bounced (mail for POSTFIX_SERVER loops back to myself)
Nov 16 15:56:02 mail2 postfix/smtpd[24819]: disconnect from POSTFIX_SERVER ehlo=1 quit=1 commands=2
Nov 16 15:56:02 mail2 postfix/cleanup[24775]: 1D6A53F264: message-id=<20201116155602.1D6A53F264@POSTFIX_SERVER>
Nov 16 15:56:02 mail2 postfix/qmgr[24745]: 1D6A53F264: from=<>, size=2779, nrcpt=1 (queue active)
Nov 16 15:56:02 mail2 postfix/bounce[24818]: 6189F3E8EE: sender non-delivery notification: 1D6A53F264
Nov 16 15:56:02 mail2 postfix/qmgr[24745]: 6189F3E8EE: removed
Nov 16 15:56:02 mail2 postfix/postscreen[24810]: CONNECT from [POSTFIX_SERVER]:50968 to [POSTFIX_SERVER]:25
Nov 16 15:56:02 mail2 postfix/postscreen[24810]: PASS OLD [POSTFIX_SERVER]:50968
Nov 16 15:56:02 mail2 postfix/smtpd[24819]: connect from POSTFIX_SERVER
Nov 16 15:56:02 mail2 postfix/smtp[24809]: warning: host POSTFIX_SERVER:25 greeted me with my own hostname POSTFIX_SERVER
Nov 16 15:56:02 mail2 postfix/smtp[24809]: warning: host POSTFIX_SERVER:25 replied to HELO/EHLO with my own hostname POSTFIX_SERVER
Nov 16 15:56:02 mail2 postfix/smtp[24809]: 1D6A53F264: to=<root@POSTFIX_SERVER>, relay=POSTFIX_SERVER:25, delay=0.01, delays=0/0/0/0, dsn=5.4.6, status=bounced (mail for POSTFIX_SERVER loops back to myself)
Nov 16 15:56:02 mail2 postfix/smtpd[24819]: disconnect from POSTFIX_SERVER ehlo=1 quit=1 commands=2
Nov 16 15:56:02 mail2 postfix/qmgr[24745]: 1D6A53F264: removed
Nov 16 15:56:02 mail2 postfix/smtp[24776]: ED7723F26B: to=<[email protected]>, relay=je-smtp-inbound-2.mimecast-offshore.com[213.167.81.36]:25, delay=0.62, delays=0/0/0.42/0.19, dsn=5.0.0, status=bounced (host je-smtp-inbound-2.mimecast-offshore.com[213.167.81.36] said: 550 Invalid Recipient - https://community.mimecast.com/docs/DOC-1369#550 [wEA4IvMnPkWfW2uIBVHiIg.jer2] (in reply to RCPT TO command))
Nov 16 15:56:02 mail2 postfix/qmgr[24745]: ED7723F26B: removed
spam postfix dovecot greylisting

2 个回答

  1. 这似乎与灰名单无关，是因为550mimecast 的代码。

    Nov 16 15:56:01 mail2 postfix/smtp[24776]: 404853F264: to=<[email protected]>, relay=je-smtp-inbound-1.mimecast-offshore.com[213.167.81.36]:25, delay=0.63, delays=0.08/0/0.45/0.1, dsn=5.0.0, status=bounced (host je-smtp-inbound-1.mimecast-offshore.com[213.167.81.36] said: 550 Anti-Spoofing policy - Inbound not allowed - https://community.mimecast.com/docs/DOC-1369#550 [22wPIJELPUOp5GuDx4lfGw.jer2] (in reply to RCPT TO command))

    查看日志中提供的链接，它会告诉您解决方案是创建反欺骗策略：

    550 反欺骗策略 - 不允许入站 邮件已触发反欺骗策略。创建反欺骗策略以不对发件人的地址或 IP 地址采取任何措施。

    是你做的吗？

    • 2
  2. Best Answer

    消息正在被自定义脚本重写并从队列中删除。一旦该脚本被禁用，postfix 能够在几分钟后重新发送消息并按预期通过灰名单检查。

    • 0

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