[imp] UW-imap 'imap_config' configuration and high load

[Arminas]

Hi Piotr,

I don't know if its the same problem, but our mail server was crashed when
we started using imap-proxy. Mail server wasn't configured to handle lots of
open files. We've set lower cache limits at imap-proxy configuration and
that solved our problems. You should check how many opened files your mail
server can handle and according to that, configure imap-proxy.

Also there are useful properties described, that can be used in server's
configuration in imp/config/servers.php (timeout, login_tries).


On 3 February 2011 15:44, Piotr Legiecki <piotrlg at pum.edu.pl> wrote:

> Hi
>
> I was a long time horde/2imp3 user. And it worked. Recently I have upgraded
> to horde3/imap4 (debian/lenny) and the problem rised. The point is about
> namespaces of course and I am aware of this.
>
> We have imap (UW-Imap) server on one machine and horde3 on another. Of
> course our clients (outlook etc) are configured (hardcoded) to use mail/
> folders. With imp3 it was not a problem, with imp4 there are some solutions
> and I have choosen this one:
>
>  'imap_config' => array(
>>        'children' => false,
>>        'namespace' => array(
>>            'mail/' => array(
>>                'name' => 'mail/',
>>                'delimiter' => '/',
>>                'type' => 'personal',
>>                'hidden' => false,
>>            ),
>>        ),
>>        'search_charset' => array(
>>            'UTF-8' => true,
>>            'ISO8859-2' => true,
>>      ),
>>    ),
>>
>
> But it works only in testing environment. when there are many connections
> to the imap server it (the imap server) just dies with 'w' pointing to 200
> or more.
>
> So my question is. What to do with this? How to tune the imap_config
> properly (if it is not good already).
>
> How to check if it is the right imap_config configuration?
>
> And why the imap server has so big load?
>
> Regards
> P.
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