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Date: Thu, 06 Jul 2006 17:28:55 -1000
From: "David J. Orman" <ormandj@corenode.com>
In-reply-to: <cone.1152240742.658037.2598.1000@zoraida.natserv.net>
To: Francisco Reyes <lists@stringsutils.com>
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References: <cone.1152240742.658037.2598.1000@zoraida.natserv.net>
Cc: FreeBSD ISP <freebsd-isp@freebsd.org>
Subject: Re: IAMP servers in FreeBSD for ISP
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I had good luck with Dovecot and a few thousand accounts (some with  
over 5 gigs of mail) prior to switching over to JES (JES is great,  
but wait for version 5 if you are interested. 4 is very, very complex  
to get working properly.)

So, Dovecot for now, JES5 if you are interested once it's released (I  
believe 4th quarter '06).

http://www.sun.com/software/javaenterprisesystem/

Yes, JES is free now (without support.)

David

On Jul 6, 2006, at 4:52 PM, Francisco Reyes wrote:

> Anyone care to share what IMAP servers they have found to scale best?
>
> We are currently using courier and at times it seems it really will  
> not scale well into thousands of emails.
>
> We have basically one setup with self contained machines that do  
> all the work and a second setup where we break the load into MX  
> machines, NFS to store the maildir for courier and front end  
> machines to run courier and NFS.
>
> We can handle hundreds of accounts in the self contained, more or  
> less ok (depending on the mix of pop or imap).
>
> The second setup is more complex to meassure since the load is  
> distributed. The biggest problem with this second setup is that the  
> front end machines end up needing to mount several of the Maildir  
> NFS servers and we have found that one of the NFS servers going  
> down can affect all of the front end machines.
>
> What have others found to scale well and what kind of hardware are  
> you using? _______________________________________________
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