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Date: Tue, 19 Aug 2008 09:00:18 -0400
From: Steve Bertrand <steve@ibctech.ca>
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To: Robby Balona <robby@grab.co.za>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Best SMTP Gateway Program and Reporting Tools
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Robby Balona wrote:

> I love qmail also.. but didn't do well under heavy smtp load in my 
> environment. I put qmail +vpopmail + qmailadmin 
> +clamav+dovecot+spamassasin + assap +squirrelmail together. 

I use Qmail on almost all of our SMTP servers. On the ones that only 
house a couple hundred email addresses, your setup works flawlessly in 
our environment.

On the boxes with 10k+ email accounts, I do away with all of the 
filtering stuff, and front-end the Qmail/Vpopmail boxes with third party 
appliances.

 From what I can tell, it's the filtering processes that are the 
bottleneck under heavy load. Take them out of the equation and load is 
no longer an issue.

Just my .02.

Steve