Cyrus dies

[Colin Bruce]

Dear All,

Another problem which may be related to the one I reported earlier but I
don't think so.

The facts

    cyrus imap 2.2.3
    Linux 2.4.25

The server only runs cyrus imap. There are no other services on this machine
and only a few administrators can login.

The Problem

As far as I can tell every night at approximately 21:15 the server dies.
Here is some uptimes as that times approaches.

root at imap2: uptime
 21:01:19  up 40 days, 22:48, 21 users,  load average: 0.88, 0.55, 0.33
root at imap2: uptime
 21:17:33  up 40 days, 23:05, 21 users,  load average: 0.18, 0.27, 0.31
root at imap2: uptime
 21:17:37  up 40 days, 23:05, 21 users,  load average: 0.18, 0.27, 0.31
root at imap2: uptime
 21:17:55  up 40 days, 23:05, 21 users,  load average: 0.74, 0.39, 0.34


Following that last one I cant type anything at all. I also can't login
to the server and anyone using it will find that they can't read any e-mail.
After 10 or 15 minutes like this it will start responding again and the
load average will be falling from somewhere between 80 and 100. It will
fairly quickly fall to values of less than 1 again. There are no cron or
at jobs running at this time.

This seems to happen most evenings.

Does anyone know what might be the cause?

Best wishes.....
Colin Bruce

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