POP lock problem

[David Carter]

On Thu, 4 Aug 2005, Josh Endries wrote:

> I've been trying to resolve a POP lock problem I'm having for a week 
> now. :( I've looked through the archives and online and haven't figured 
> out how to fix it. A client's mailbox got locked and is now somehow 
> stuck in that state. There's no TCP connection open anymore, nobody is 
> accessing the box, and it's been many days since it last worked 
> correctly but imapd still says it's locked and won't let anyone log in. 
> How can I remove/reset the POP lock? I can't find a "lock" file anywhere 
> to remove. Would restarting imapd do it? The server machine itself?

Are talking about errors of the form:

   -ERR [IN-USE] Unable to lock maildrop

This means a process has taken out a fcntl() or flock() lock on the 
cyrus.header file associated with that mailbox. Probably a POP process 
given that they take a lock and hold it for the duration of the login 
session, but it might be an IMAP process which has got stuck. lsof is a 
useful utility for working out which processes have opened a given file.

-- 
David Carter                             Email: David.Carter at ucs.cam.ac.uk
University Computing Service,            Phone: (01223) 334502
New Museums Site, Pembroke Street,       Fax:   (01223) 334679
Cambridge UK. CB2 3QH.
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