Re: Unusual Problem

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On 9/17/07, Scott Moseman <scmoseman@xxxxxxxxx> wrote:
> On 9/14/07, Scott Moseman <scmoseman@xxxxxxxxx> wrote:
> > On 9/14/07, Wm Mussatto <mussatto@xxxxxxx> wrote:
> > >
> > > > I have one user who occasionally has a unique problem.  She will
> > > > continue receiving email, but she's unable to move or delete them in
> > > > Squirrelmail.  She can't even mark them as read.  And the interface is
> > > > very slow to respond.  If I simply open/close her mailbox with pine,
> > > > the problem vanishes.  Response is back to being quick, she can move,
> > > > delete and whatever else.
> > >
> > > Might help to provide more information. Like, Mail Delivery Agent (e.g.,
> > > dovecot).  I've seen slow response when someone goes into a folder that
> > > they haven't accessed for a while because, I think, that Dovecot does a
> > > reindex for the new entries.  If I go back in the huge mailbox after a bit
> > > I get great response because Dovecot continues to index and the next time
> > > the box is accessed the indexes are up to date.  You could have something
> > > similar and its totally outside of SM's area.  Don't know if this matches
> > > what you are seeing.
> > >
> >
> > Email is received and delivered with sendmail+procmail.
> > Email is retrieved using SquirrelMail on Apache with UW.
> >
> > At this point, we've noticed no lengthy delay that solves it.
> > I think the problem was going on for over a day this last time,
> > and the mailbox was only about 13MB in size.  Not too large.
> >
>
> I suppose the next time I see the problem I will make a copy of the spool,
> open/close it with pine to "fix" the problem, and diff them to see what was
> changed by pine to resolve the problem.  I guess it isn't a common issue.
>

I'm looking at a diff on the mail spool before and after I opened it with
pine to "fix" the problem.  The MAILER-DAEMON internal format msg
has an updated timestamp and some X-* headers were added to the
last 5 messages in the spool -- although there's more than 5 unread.

So I still have no clue what was going on with the spool before I used
pine to open it and "fix" it.  Although I do see several of these errors in
the log prior to the user telling me that they were having a problem...

imapd[22090]: Command stream end of file, while reading line
 user=xxxxxxxx host=localhost [127.0.0.1]

But I couldn't tell you if something happened to cause the problem to
the spool that caused the imap problem, or if perhaps the imap server
caused the problem itself.  I guess it's not a SM issue, AFAIK, unless
the SM to IMAP interaction has a problem somewhere.  Not sure how
in the world to troubleshoot at this point.  Maybe I can try a different
IMAP service and see if the problem comes back again?

Thanks,
Scott

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