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

[Adam Tauno Williams]

> 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 

UW-Imap is antique and has lots of performance issues.  Migrate to
Cyrus.  Seriously.

> 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.

Are you running an IMAP proxy on the web-head?  That is *strongly*
encouraged and *very* simple to setup.  The performance upside is
*huge*.

> 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?