I have just upgraded from postfix 2.3.3 (CentOS 5.3 stock package) to 2.6.5-1. The process went quite smoothly and everything seems good, except I just noticed a log entry pertaining to failed delivery for a virtual user. I am not familiar enough with milters to know if this indicates a problem or not... I suspect the message may have been SPAM anyway, but I'd like to be sure. BTW, I tried sending mail for the same virtuser from the CLI on the box, and it sent without any problem.
It's the third and fourth lines here that concern me... Sep 24 14:31:44 tmail postfix/smtpd[4457]: connect from me-ss2-n2jgvp.mailengine1.com[66.59.0.146] Sep 24 14:31:45 tmail postfix/smtpd[4457]: 2AC7C87E48: client=me-ss2-n2jgvp.mailengine1.com[66.59.0.146] Sep 24 14:31:45 tmail postfix/smtpd[4457]: warning: milter unix:/var/run/dk-milter/dk.sock: can't read SMFIC_DATA reply packet header: Success Sep 24 14:31:45 tmail postfix/smtpd[4457]: 2AC7C87E48: milter-reject: DATA from me-ss2-n2jgvp.mailengine1.com[66.59.0.146]: 451 4.7.1 Service unavailable - try again later; from=<streamsendboun...@me-ss2-n2jgvp.mailengine1.com> to=<m...@virtdomain.com> proto=ESMTP helo=<me-ss2-n2jgvp.mailengine1.com> Sep 24 14:31:45 tmail postfix/smtpd[4457]: disconnect from me-ss2-n2jgvp.mailengine1.com[66.59.0.146] Please let me know if additional config/logs are needed. - Andrew Long
