I have recently installed cyrus-imap 2.0.9 in a test environment in
hopes of upgrading my company's mail server which is currently running
the UW imap servers. In general I have been very impressed with the
operation, but I have run across one problem that is holding me up.
As a test, I dumped a high load of messages at the server (200 messages
being delivered via smtp). Sendmail accepts the messages and fires up a
copy of deliver for each one. This is where things get a little shaky.
Now I have roughly 200 copies of deliver running each trying to connect
to lmtpd. At this point lmtpd dies, here is the syslog entries:
Dec 27 07:34:49 blackops service-lmtpd[28232]: executed
Dec 27 07:34:51 blackops lmtpd[28232]: DBERROR db3:
/var/imap/db/__db.003: Too many open files in system
Dec 27 07:34:52 blackops lmtpd[28232]: DBERROR: dbenv->open
'/var/imap/db' failed: Too many open files in system
Dec 27 07:34:52 blackops master[26906]: process 28232 exited, signaled
to death by 11
Dec 27 07:37:53 blackops master[26906]: process 28433 exited, status 0
Dec 27 07:45:10 blackops master[26906]: exiting on SIGTERM
Dec 27 07:45:10 blackops deliver[28456]: connect(/var/imap/socket/lmtp)
failed: Connection refused
What I would like to do is limit the number of copies of deliver (and
hence lmtpd) that are running at any one time. If this number is
exceeded, I want it to refuse delivery, forcing the mail to be queued
up. Is this possible?
And is there aby documentation for the /etc/cyrus.conf file available?
I have a feeling my question could be answered by that, but I can't seem
to find it.
Thanks in advance.
-Jeremy
--
Jeremy Beker, Technical Manager
Research & Development, 3-G International
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