[kdepim-users] Problem with INBOX - a clue?

[Anne Wilson]

On Friday 25 September 2009 20:20:09 Ingo Klöcker wrote:
> On Friday 25 September 2009, Anne Wilson wrote:
> > On Friday 25 September 2009 14:20:51 Anne Wilson wrote:
> > > On Friday 25 September 2009 13:01:57 you wrote:
> > > > On fredag 25 september 2009 13:02:30 Anne Wilson wrote:
> > > > > One user has a problem with INBOX (on a local IMAP server).
> > > > > All subfolders work fine.  I have removed index files, but the
> > > > > problem persists.  The error message says
> > > > >
> > > > > Error while querying the server status.  Unable to open folder
> > > > > INBOX. The server replied: Internal error occurred. Refer to
> > > > > server log for more information.
> > > > >
> > > > > There's nothing in /var/log/maillog.  Which log should I be
> > > > > reading?
> > > >
> > > > Three short questions:
> > > > 1. What OS?
> > > > 2. Which IMAP-server
> > > > 3. Which syslog-server?
> > > >
> > > >
> > > > Usually courier, cyrus or dovecot for IMAP. I use courier and
> > > > there it is courierlogger that handles the logs. Courierlogger
> > > > logs to syslog. My syslog is syslog-ng and the options is
> > > > normally in
> > > >  /etc/syslog-ng/syslog-ng.conf. I've got:
> > > >
> > > > destination mail { file("/var/log/mail"); };
> > > >
> > > > So for me it's /var/log/mail. But it is also up to what OS you're
> > > > using to define where the syslog should go.
> > >
> > > Just one thing I should mention.  I always set up my users with the
> > > same username and UID as previously held.  David is always 501
> > > (Mandriva always used to start users at 500, and I've maintained
> > > the list of UIDs for 7 years or more).  When I looked at the perms
> > > for David's Inbox on the server it was owned 501:VBoxusers.  This
> > > is crazy, and I've no idea where that came from. On the server I
> > > changed ownership recursively to david:david.  Unfortunately, this
> > > didn't resolve the issue.  I'm just hoping that it rings a bell
> > > with someone, though.
> >
> > Continuing to study logs, I came across this in the dovecot log:
> >
> >  dovecot: Sep 05 13:25:10 Error: imap-login: Time just moved
> > backwards by 1 seconds. I'll sleep now until we're back in present.
> > http://wiki.dovecot.org/TimeMovedBackwards
> > dovecot: Sep 13 08:53:04 Error: IMAP(david):
> > unlink(/home/david/Maildir/cur/cur:2,ST) failed: Is a directory
> >
> > Whatever is causing this, it happened long before I did the new
> > install (it shows how infrequently he checks his mail, too).  There
> > are many repetitions of that last entry during yesterday and today,
> > as I've tried to solve the problem.
> 
> Hmm, in Maildir each maildir directory contains three subdirectories
> cur, new and tmp. The names of the files holding the actual messages
> are usually built in a way that makes them globally unique. 'cur:2,ST'
> most certainly is not globally unique. :-) Moreover, 'cur:2,ST' is a
> directory and thus does not belong in Maildir/cur/.
> 
> Maybe (for whatever reason) a 'cur' subdirectory of another maildir
> folder was moved to /home/david/Maildir/cur. I suggest to
> move /home/david/Maildir/cur/cur:2,ST somewhere else and re-try. You
> might also want to check whether cur:2,ST contains messages which could
> explain the origin of this directory.
> 
 There was indeed a /home/david/Maildir/cur/cur:2,ST.  I have no idea how it 
got there.  I certainly didn't add it, and there's no way that David 
could/would have done.  It was empty, and removing it has solved the problem.

Interestingly someone else had had the same problem recently.   I suspect that 
dovecot has one of those bugs that's only triggered when venus aligns with 
mars, the user was born under pisces and the date is the 23rd :-D

Anne
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