[Dovecot] corrupt mbox, mailboxes not found, and message read status
I'm running dovecot 0.99.10-0.rc2 deb packages for Debian Woody from braincells.com. My old environment was a server running UW-IMAP for IMAP and POP services. We are still using mbox for all mailboxes. I use IMP for web based access.
Forgive me if these issues have already been discussed or fixed in cvs. Any additional pointers to this info. would be appreciated.
I have noticed a few issues.
I've seen a whole slew of entries like the following:
pop3(username): Error indexing mbox file /home/username/mail/inbox: LF not found where expected
According to this mailing list post from June 16, 2003: http://dovecot.procontrol.fi/list/dovecot/2003-June/001668.html it may be because of adjacent From mail headers in a message.
I've had one user that this was not the case. They said they were deleting lots of messages in IMP and when he went back to his inbox, it was empty. When I looked at the mbox file, a message had been truncated. When I deleted the imap index and removed that truncated message, the mailbox became visible again.
Has the adjacent From issue been fixed?
Is there a way to find out more specifically what part of the mbox file dovecot is unhappy about? ie. a line number.
Inside IMP several users have set up a filter to send messages marked as spam by SpamAssassin into a spam folder. When they log-in or click the filter icon, the filter runs. However, now when the the filter runs, it reports: "Problem with filter rule 1: folder does not exist: mail/spam". However, the spam folder is still there, and when I open that folder in IMP, it opens just fine. I've already changed IMP's folder prefix from 'mail/' to ''. I've also tried deleting the imap index. The message still shows up and the filter fails to run.
With the old set-up, when I check mail with a pop3 client, the UW pop
server modifies the Status and/or X-Keywords headers for the message.
When the mailbox is viewed with an IMAP client such as IMP, messages
that have already been downloaded via pop are marked as read. This
doesn't seem to happen with dovecot. I found a Oct 19 2003 thread
( http://dovecot.procontrol.fi/list/dovecot/2002-October/000774.html )
on the mailing list where Timo said he was intending to use the
X-Keywords trick. Did this ever get implemented?
Thanks, -jared
On Wed, 2003-07-30 at 00:30, Jared wrote:
pop3(username): Error indexing mbox file /home/username/mail/inbox: LF not found where expected
I've had one user that this was not the case. They said they were deleting lots of messages in IMP and when he went back to his inbox, it was empty. When I looked at the mbox file, a message had been truncated. When I deleted the imap index and removed that truncated message, the mailbox became visible again.
Hm. A truncated message shouldn't corrupt the whole mbox, at least if you delete index file..
Of course the truncation itself isn't good either. Could it be because you've set Dovecot to use different locking methods than your MTA? I haven't noticed corruption myself yet and I use mboxes all the time. Maybe I've been lucky though.
I'll probably also rewrite most of the mbox handling code in a few months..
Has the adjacent From issue been fixed?
Not yet, but it will be.
Is there a way to find out more specifically what part of the mbox file dovecot is unhappy about? ie. a line number.
No. Hmm. Counting line numbers is a bit too kludgy to add, but exact offset would be possible.
Inside IMP several users have set up a filter to send messages marked as spam by SpamAssassin into a spam folder. When they log-in or click the filter icon, the filter runs. However, now when the the filter runs, it reports: "Problem with filter rule 1: folder does not exist: mail/spam". However, the spam folder is still there, and when I open that folder in IMP, it opens just fine. I've already changed IMP's folder prefix from 'mail/' to ''. I've also tried deleting the imap index. The message still shows up and the filter fails to run.
Looks like IMP still tries to use mail/ prefix for the filter. Does the filter configuration have the mailbox set to mail/spam? Just guessing, I've never used IMP.
With the old set-up, when I check mail with a pop3 client, the UW pop server modifies the Status and/or X-Keywords headers for the message.
When the mailbox is viewed with an IMAP client such as IMP, messages that have already been downloaded via pop are marked as read. This doesn't seem to happen with dovecot. I found a Oct 19 2003 thread ( http://dovecot.procontrol.fi/list/dovecot/2002-October/000774.html ) on the mailing list where Timo said he was intending to use the X-Keywords trick. Did this ever get implemented?
X-Keywords have been used for a long time now. It's possible to set \Seen flag for messages downloaded with POP3, but I don't know if it's worth the trouble. Who uses POP3 and IMAP mixed anyway?
On Thu, Jul 31, 2003 at 05:58:32AM +0300, Timo Sirainen wrote:
X-Keywords have been used for a long time now. It's possible to set \Seen flag for messages downloaded with POP3, but I don't know if it's worth the trouble. Who uses POP3 and IMAP mixed anyway?
Why does dovecot support POP3 if you don't intend that kind of usage?
On Sat, 2003-08-02 at 17:58, Moe Webber wrote:
On Thu, Jul 31, 2003 at 05:58:32AM +0300, Timo Sirainen wrote:
X-Keywords have been used for a long time now. It's possible to set \Seen flag for messages downloaded with POP3, but I don't know if it's worth the trouble. Who uses POP3 and IMAP mixed anyway?
Why does dovecot support POP3 if you don't intend that kind of usage?
It's useful to support different users who use either POP3 or IMAP, but a same user using both of them can't get really sensible behaviour in any case.
But I guess using POP3 normally and IMAP webmail occationally is good enough excuse to save the \Seen flags.
Timo Sirainen tss@iki.fi writes:
It's useful to support different users who use either POP3 or IMAP, but a same user using both of them can't get really sensible behaviour in any case.
For sensible use, POP3 supports UIDL.
Timo Sirainen tss@iki.fi writes:
X-Keywords have been used for a long time now. It's possible to set \Seen flag for messages downloaded with POP3, but I don't know if it's worth the trouble. Who uses POP3 and IMAP mixed anyway?
I do. In fact, many people do that handle their mail from various sites. If you claim Courier-IMAP compatibility, you'll have to do the marking, for Courier-IMAP does it, too.
On Tue, 29 Jul 2003, Jared wrote:
I'm running dovecot 0.99.10-0.rc2 deb packages for Debian Woody from braincells.com.
Yikes! That reminds me I never uploaded the backport of 0.99.10 final. (It's been in sid for a long time.) The packages are up there now.
participants (5)
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Jaldhar H. Vyas
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Jared
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Matthias Andree
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Moe Webber
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Timo Sirainen