1 Topic by krishnat

  • krishnat
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  • Registered: 2010-12-23
  • Posts: 14

Topic: mail postfix/smtpd[13729]: too many errors after UNKNOWN from unknown

I am seeing a quite few of these messages, in the error log. Any ideas, how to troubleshoot this?

Feb 16 18:12:04 mail postfix/smtpd[13729]: connect from unknown[93.180.77.178]
Feb 16 18:12:50 mail postfix/smtpd[13729]: too many errors after UNKNOWN from unknown[93.180.77.178]
Feb 16 18:12:50 mail postfix/smtpd[13729]: disconnect from unknown[93.180.77.178]
Feb 16 18:13:31 mail postfix/smtpd[13729]: connect from unknown[93.180.77.178]
Feb 16 18:14:16 mail postfix/smtpd[13729]: too many errors after UNKNOWN from unknown[93.180.77.178]
Feb 16 18:14:16 mail postfix/smtpd[13729]: disconnect from unknown[93.180.77.178]
Feb 16 18:14:54 mail postfix/smtpd[13729]: connect from unknown[93.180.77.178]
Feb 16 18:15:40 mail postfix/smtpd[13729]: too many errors after UNKNOWN from unknown[93.180.77.178]
Feb 16 18:15:40 mail postfix/smtpd[13729]: disconnect from unknown[93.180.77.178]
Feb 16 18:16:21 mail postfix/smtpd[13729]: connect from unknown[93.180.77.178]
Feb 16 18:17:06 mail postfix/smtpd[13729]: too many errors after UNKNOWN from unknown[93.180.77.178]
Feb 16 18:17:06 mail postfix/smtpd[13729]: disconnect from unknown[93.180.77.178]

2 Reply by ZhangHuangbin

  • ZhangHuangbin
  • iRedMail Developers
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  • Registered: 2009-05-06
  • Posts: 5,607

Re: mail postfix/smtpd[13729]: too many errors after UNKNOWN from unknown

It should be OK.

This is caused by DNS resolve, because Postfix is chrooted under /var/spool/postfix/, it can't reverse IP address to hostname. Leave postfix 'smtpd' unchrooted in master.cf will fix it.