[horde] Imp/Dimp Inbox incorrectly shows 0 emails

[Joe Besko]

Quoting Andy Dorman <adorman at ironicdesign.com>:

> Using Horde/IMP/DIMP, Cyrus 2.3 and OpenLDAP (latest debian stable)
>
> Just updated all Horde packages to latest versions below before this  
> problem happened...
>
> Horde 3.3.11
> Imp 4.3.9
> Dimp 1.1.6
>
> We have several thousand users over several domains on a cluster of  
> servers using Horde/Imp/Dimp webmail with Cyrus 2.3 IMAP and virtual  
> hosts.  It works great for everyone except one person apparently...
>
> Just this past weekend we had one user report an empty Inbox even  
> though he was sure he had email and indeed, the Horde sidebar folder  
> showed 17 total /8 unread.
>
> After much poking and prodding over 3 days here is what we have found...
>
> - we are unable to recreate this problem on any other account.
> - if you do a search on the Inbox with no parameters, you can see  
> all the email in the inbox.
> - If you move all the Inbox emails to another folder, the other  
> folder shows them correctly
> - restarting Cyrus & horde has no effect
> - re-indexing the Cyrus mailbox has no effect (and I have confirmed  
> the mail files, db files and directories all have the proper  
> ownership and perms)
> - when I set this account up on Thunderbird/Snowdove, the Inbox  
> displays it's contents correctly.
>
> As a temporary bandaid I have used IMP search to create a  
> "virtual_inbox" and set that folder to display on login.
>
> I am now working through the IMP code trying to figure out  
> when/where IMP decides a mailbox is empty and see what Cyrus IMAP is  
> passing to IMP to indicate that.
>
> But I wanted to ask the list if anyone has ever seen this before with Cyrus?
>
> In searching the list archives I found one or two instances of a  
> similar problem, but they appeared to be with a different IMAP  
> server and hence not applicable to this case.
>
> Any thoughts are welcome.  And when we figure this out I will post  
> back to the group what we found.  Possibly we have stumbled on a  
> "corner case" for what Cyrus is telling IMP and we can help improve  
> IMP by figuring out how to handle it.  We will see.

Check the user's sorting pref on the Inbox.  The user may have changed  
the sort field and failing to display all the entries.  You can also  
find this user's sortpref and delete that and the default sort order  
will be in effect again.

It's been pointed out that the culprit is likely the c-client library  
causing this to fail.

Hope this works for you in this case.

-- 

Joe Besko                      Phone:        517.432.5335
Systems Programmer             Fax:          517.353.9847
Michigan State University      E-mail:       jbesko(a)msu.edu
313 Computer Center
East Lansing, MI 48824-1042