Best way to use clamav (MTA or MailScanner)

[Alex Neuman van der Hans]

Ken A wrote:
> We run both. I have noticed that sometimes MailScanner and clamavmodule 
> on a gateway MX will 'miss' a virus that clamav-milter will catch later 
> on the mail hub. Not sure what causes this. It's rare though, but worth 
> mentioning, I suppose.

I've run both as well ever since the "what goes first, virus or spam 
scannning" debate a few years back. Since I wanted to scan a low-traffic 
  server's mail for viruses first - since most of the time the unwanted 
traffic was, in fact, viruses - and then spam, I installed the 
clamav-milter to do this. Saved a lot of time and cpu.

Since spam is more prevalent nowadays (at least in my experience), the 
point is no longer valid - but I still run clamav-milter in front of 
MailScanner anyways.

Regards,

Alex Neuman
N&K Technology Consultants
http://nkpanama.com/