servername not honored in imapd.c?

Steve Huston huston at
Fri Feb 10 13:11:11 EST 2006

(Apologies, meant to send this to the list)

---------- Forwarded message ----------
Date: Fri, 10 Feb 2006 12:31:59 -0500 (EST)
From: Steve Huston <huston at>
To: Simon Matter <simon.matter at>
Subject: Re: servername not honored in imapd.c?

On Fri, 10 Feb 2006, Simon Matter wrote:
> My current RPM 2.3.1-3 includes updates from CVS of yesterday.

How much testing did you do on it?  I ask because when I saw Ken's response, I
pulled the latest from CVS, built it, brought Cyrus down and installed it.
Things went okay for awhile (the tls_sessions.db and deliver.db had to be
deleted, or it didn't want to start) but then every now and then an imapd
process would start eating up gobs of memory.  Without my noticing a couple of
them ended up taking the whole machine and its swap; after a reboot (and
unfortunately a mailbox.db restore, and a 'reconstruct -rf user') I was able
to watch now and then when one would lock up.  An strace showed it was
constantly checking for /var/imap/msg/shutdown, which I found a description of
in the archives, so I don't think that was the problem but I don't know what
it was.  I reverted to the original 2.3.1 and just made the changes in imapd.c
which started this thread, and it's running fine now - so one of the other
changes seems to have caused the problem.

If there's interest, I might be able to setup the latest CVS code on our test
machine and see if I can provoke it again, but there seemed to be no rhyme or
reason to it - more than one user triggered the problem, and yet the same user
wouldn't trigger it the next time.

Steve Huston - W2SRH - Unix Sysadmin, Dept. of Astrophysical Sciences
  Princeton University  |    ICBM Address: 40.346525   -74.651285
    126 Peyton Hall     |"On my ship, the Rocinante, wheeling through
  Princeton, NJ   08544 | the galaxies; headed for the heart of Cygnus,
    (609) 258-7375      | headlong into mystery."  -Rush, 'Cygnus X-1'

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