[Dovecot] Converting from UW-IMAP to dovecot - odd client problems

[Timo Sirainen]

On Wed, 2008-03-19 at 10:43 -0700, Michael Durket wrote:
> We've noticed some oddities which we can't figure out:
> 
>      1) When siwtching a Thunderbird user running on a Fedora system  
> (latest version of
>           Thunderbird) Thunderbird couldn't see his mail folders even  
> when the appropriate
>           checkbox  (Server Settings -> Advanced -> Show Only  
> Subscribed Folders) was
>           unchecked. Clearing out the IMAP Server Directory setting  
> seemed to fix this, but
>           the very next day, the folders were gone again and we've  
> been unable since to get
>           Thunderbird to see them.

Maybe TB broke its cache after the change. For a completely transparent
UW-IMAP -> Dovecot migration where these kind of problems shouldn't
happen see http://wiki.dovecot.org/Namespaces

>            Another problem with this same user involved a test wherein  
> we created a new
>            mail folder and then deleted it. The deletion caused an  
> error message to be displayed
>            (inferior folders, etc) but on the Mac OS X version no such  
> error occurred and the
>            folder was deleted. Investigating the protocol traces for  
> Thunderbird showed that in the
>            error case, it attempted to rename the deleted folder as a  
> subfolder of the Trash folder
>            (thus generating the error message) but on the Mac OS X  
> version, it actually deleted
>            the folder (which would seem to make more sense). The  
> settings pertaining to the Trash
>            folder are the same on both clients.

Disable "Server supports folders that contain sub-folders and messages"
setting. https://bugzilla.mozilla.org/show_bug.cgi?id=284933

UW-IMAP has this exact same problem, so I don't know why it wouldn't
have happened with it (unless TB has some special UW-IMAP checking
code).

>      2)  When switching an Apple Mail.app user running on Mac OS X  
> 10.4.11 (Tiger) at the
>            latest patch level, things appeared to work fine, and then  
> the user mentioned that
>            no mail was showing up in her inbox. Closing and restarting  
> Mail.app appeared to
>            fix that temporarily. She normally keeps a large number of  
> messages in her inbox
>            (approximately 7000+) and receives a large number of  
> messages each day (several
>            hundred).

No idea. I've used Mail.app for several years with Solaris+mboxes for my
own mails..

> solutions, or could point me to
> some ways of debugging these problems (with Thunderbird I can at least  
> debug IMAP protocol exchanges,
> but since dovecot doesn't log IMAP exchanges for specific IPs and  
> since the socket connections are all
> via STARTTLS I can't use tcpdump so I'm kind of at a loss for how to  
> track these things down short of
> patching the dovecot code to put in tracing messages).

http://wiki.dovecot.org/Debugging/Rawlog
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part
Url : http://dovecot.org/pipermail/dovecot/attachments/20080319/f49d0177/attachment-0001.bin