[Dovecot] messages_count too large errors (1.0RC5)

[Jeff Turner]

Hi,

Just today, Thunderbird started throwing errors when accessing a particular
mail folder. Looking in the logs showed this:

dovecot: Aug 09 15:36:31 Error: IMAP(nmenere): Corrupted index file /imap/mailboxes/nmenere/shared-settings/jira-support/index/.INBOX.Triaged/dovecot.index: messages_count too large (51 > 39)

This is a new user's first attempt to access a shared jira-support/
folder, so there is no chance of their index files being corrupt.
Deleting the dovecot* files didn't help. Neither did 'cp -rp
.INBOX.Triaged .INBOX._Triaged' and then subscribing to the new folder.

In fact, the problem seems to be with the files in cur/. There are 51 in total,
and 39 of them have an 'i' flag:


1155084961.P27685Q5.redback.sydney.atlassian.com:2,Sbrk
1155084979.P27685Q6.redback.sydney.atlassian.com:2,Sbtk
1155085103.P27685Q10.redback.sydney.atlassian.com:2,Sbwk
1155085175.P28321Q1.redback.sydney.atlassian.com:2,Sbcki
1155085221.P27685Q12.redback.sydney.atlassian.com:2,Sbwk
1155085228.P28321Q4.redback.sydney.atlassian.com:2,Sbki
1155085231.P28321Q5.redback.sydney.atlassian.com:2,Sbki
1155085246.P28321Q6.redback.sydney.atlassian.com:2,Sbki

Loading the maildir in mutt and re-saving them all to a clean maildir
fixes the problem, by resetting the flags.

Going through the logs, I see other users hitting this problem with other
mailboxes.

Anyone know what 'i' means?  I guess it's a dovecot extension?

I should mention that this happened a few months ago too, with 1.0b8 (I
think).

This is all running on a linux box, mail delivered with procmail, no
special settings.

Anyone seen this before?


Cheers,
Jeff