[horde] Error communicating with server during search

[Mike]

Quoting Mike <barjunk at attglobal.net>:

> Quoting Michael J Rubinsky <mrubinsk at horde.org>:
>
>> Quoting Mike <barjunk at attglobal.net>:
>>
>>> Had a recent upgrade on my server and got an "Error communicating  
>>> with server" when trying to do a search for an e-mail.
>>>
>>> I'm happy to troubleshoot this, but really don't know where to  
>>> start since all the other functions seem to work as I have known  
>>> them to.
>>>
>>> For example, I can get and read messages, send them and use active-sync.
>>>
>>> Using "doveadm search..." on the mailbox returns records, so I  
>>> don't think it is the mail servers issue.
>>>
>>> I turned on test.php and it didn't reveal anything obvious.
>>>
>>> What should I do next for further troubleshooting?
>>
>> Check the horde/server/php logs for errors. Also, enable IMAP debug  
>> logging in imp/config/backends.local.php - this will output the  
>> conversation between Horde's imap client and the mail server.
>>
>
>
> Looks like some sort of timeout occured.
>
> Additionally the mail.err log showed: Fatal: master: service(imap):  
> child 3480 killed with signal 11 (core dumped
>
> Imap debug log below....what should I do next?
>
>>> SEARCH: Expired from cache [INBOX]
> C: 6 UID SORT RETURN (ALL COUNT) (ARRIVAL) UTF-8 TEXT dovecot
>>> Slow Command: 9.539 seconds
> S: * OK Searched 46% of the mailbox, ETA 0:10
>>> Slow Command: 9.884 seconds
> S: * OK Searched 78% of the mailbox, ETA 0:05
>>> ERROR: read/timeout error.
>>> ERROR: Server closed the connection.

More INFO:

When I do a full text search on IMAP server, I get a core dump.  Other  
searches seem fine.  This IS an IMAP server issue...I'll work with  
those folks and report back.

Thanks for the hints for troubleshooting.

Mike