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From: Jo Rhett <jrhett@svcolo.com>
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On Nov 21, 2007, at 9:58 PM, Mitchell Smith wrote:
> We are also looking at other open source solutions such as amavis

Amavisd can be very high performance if you run it and clamav/ 
whatever virus checker using temporary storage on a ramdisk.  We're  
quite happy with it.

If you need more per-user/stream options then check out CanIt.  If  
you run it on your own hardware the pricing model is pretty easy on  
the wallet.

-- 
Jo Rhett
senior geek

Silicon Valley Colocation
Support Phone: 408-400-0550