From: Jon Dowland on
On Sun, Dec 13, 2009 at 02:49:42PM -0800, Tudod Ki wrote:
> howtos like these:
> http://www.ghacks.net/2009/10/25/add-antivirus-to-postfix-with-clamav/
> http://www.debianadmin.com/how-to-filter-spam-with-spamassassin-and-postfix-in-debian.html
> Will give me spam/virus filtering for INBOUND or OUTBOUND
> mails? Or Both? sorry for the question :D But I have to
> know it 100% sure.

Why not try it on a test system, and see? You could use the
EICARS test virus in an outbound mail to a test address and
see if it reaches it.