[ale] IMAP slowness

[Stephan Uphoff]

Try the cyrus imap server.

A friend ran 150 000 Users+ on a single linux box. 
(Big fibre connected storage back-end)

I am running it at home as my email store.

Excellent caching and low memory footprint. 
The documentation may be a bit overwhelming at first - but you can get
by with a simple howto.

I am pretty sure that it supports Quotas.

Stephan 

On Fri, 2005-04-22 at 09:35, Christopher Fowler wrote:
> Our IMAP server is running slow.  I/m getting complaints that Outlook
> takes forever to load inboxes.
> 
> One users mail is totalling 380M for just the sub folders
> 
> [root at moses INBOX]# ls -l
> total 388948
> -rw-------    1 perry    perry    54952675 Jan 24 12:56 2003
> -rw-------    1 perry    perry    151311973 Apr 21 12:18 2004
> -rw-------    1 perry    perry         507 Mar 13  2003 CCC-32
> -rw-------    1 perry    perry    49931884 Apr 22 08:48 Chris
> -rw-------    1 perry    perry    141657343 Apr 22 08:35 George
> [root at moses INBOX]# du -h
> 380M    .
> 
> His inbox is 88M
> [root at moses INBOX]# du -h /var/spool/mail/perry
> 88M     /var/spool/mail/perry
> 
> 
> I use the fetchmail -> procmail system here and we use IMAP to view the
> inboxes
> 
> [root at moses INBOX]# rpm -qa | grep imap-2
> imap-2001a-1.72.0
> [root at moses INBOX]# uname -a
> Linux moses.outpostsentinel.com 2.4.9-34 #1 Sat Jun 1 06:10:23 EDT 2002
> i686 unknown
> 
> 
> When we access the IMAP server I see the hdd light on solid for a few
> minutes.  They keep saying that the problem is that IMAP can't handle it
> and that Exchange will.  With 500M of data in your mailbox I doubt
> Exchange can handle it any better than Linux running IMAP.
> 
> I get in arguments with this guy all the time about mailbox size and
> that at a real company he would be given a quota.  Using fetchmail to
> retrieve mail from a pop3 server and then procmail to place them in
> boxes is there a way I could impose a quota?  Maybe add a filter to
> procmailrc that will count the bytes in an email and redirect to
> /dev/null if it is greater than 5M.  That could limit the amount of
> damage done by quotas.
> 
> 
> 
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