On Saturday, July 19, 2003, at 05:21 PM, Paul H Byerly wrote:
Twice now my CPU has pegged after a message went through Mailman. Top shows a python2.2 process belonging to Mailman. Shutting Mailman down stops it, but it comes right back when Mailman is restarted. Killing the process ends the problem.
In digging through the logs I found similar entries in mailmn/logs/smtp-failure:
Jul 17 23:06:57 2003 (2643) delivery to [EMAIL PROTECTED] failed with code 451: 4.0.0 cannot flock(/etc/mail/access.db, fd=7, type=1, omode=37777777777, euid=0): No locks available
Jul 18 22:30:49 2003 (22481) delivery to [EMAIL PROTECTED] failed with code 451: 4.0.0 cannot flock(/etc/mail/access.db, fd=7, type=1, omode=37777777777, euid=0): No locks available
As this is the only two times I have such an entry and each proceeds the runaway process to the minute, I assume it's related. Google produced nothing that enlightened me.
The excessive CPU usage seems likely to result from MM's over-enthusiasm for retrying when the outgoing MTA reports temporary failures. This can manifest in a variety of circumstances.
Barry Warsaw has made changes in the CVS (see http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/mailman/mailman/Mailman/ Queue/RetryRunner.py) to curb this over-enthusiasm but I do not know if they are available as a separate patch or when MM 2.1.3, which will presumably incorporate the changes, will be available.
The primary trigger, from your log entries, is apparently a Sendmail problem causing a 451 SMTP response but I'll leave comment about that to an expert.
Mailman 2.1.2 Redhat 7.1 Python 2.2.2
TIA, Paul
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