Solved: Re: Help please, cyrus imapd production system down

Simon Matter simon.matter at
Thu Mar 27 09:46:01 EDT 2008

> On Wed, 26 Mar 2008, Andrew Morgan might have said:
>> On Wed, 26 Mar 2008, Mike Eggleston wrote:
>> >It looks like there is just one user that when that user connects to
>> >cyrus the imapd starts coring and when a message is sent to that user's
>> >address then lmtpd starts coring. How do I find out what is wrong the
>> >user's account and why these processes are coring?
>> In my experience, this can happen when a user has a corrupted seen file.
>> Locate the user's seen file and remove it.
>> 	Andy
> Thank you. I removed the user's seen file and everything started working
> normally. Any idea why this file got corrupted, how to recover from the
> corruption other than deleting the file (/var/lib/imap/user/?/$USER.seen),
> and how to keep the corruption from happening again. This file was
> corrupted at my site in the middle of the night (sometime after 23:19
> local). The user was not actively using IMAP, but the user was still
> logged into a workstation and had M$ Outlook running.

Well, now that we are talking about it I remember that I once had
something similar. As I said before 2.3.1 was early in the 2.3 line and
maybe there were bugs which have since be fixed upstream.
To fix skiplist files I thinks you usually have to strip the corrupted
bytes from the file. I think it logs the position in hex where the
corruption begins when cyrus tries to access the file or when you try to
convert a file with cvt_cyrusdb to another format. My cyrus-imapd rpms
include this script
which helps to fix the file. Maybe you could give it a try an report back.


> Problem symptoms:
> lmtpd cored receiving email
> imapd cored when the user connected
> lots of messages in /var/log/maillog referring to:
>   master[2438]: process 2482 exited, signaled to death by 7
> higher than normal system load
> Problem solution:
> remove the user's seen file at /var/lib/imap/user/?/$USER.seen
>   no restarting of cyrus required after removing the broken file
> Environment:
> Fedora Core 5 (current patches)
> # rpm -qa | grep cyrus
> cyrus-imapd-devel-2.3.1-2.8.fc5
> cyrus-sasl-lib-2.1.21-10
> cyrus-sasl-2.1.21-10
> cyrus-imapd-utils-2.3.1-2.8.fc5
> cyrus-sasl-ldap-2.1.21-10
> cyrus-imapd-2.3.1-2.8.fc5
> cyrus-sasl-devel-2.1.21-10
> Mike

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