I'd recommend installing AMaViS along with some virus scanner. I'm using Kaspersky because it had a good recognition rate in a test and because those Russians care more about Linux than most other AV vendors. Also, AMaViS and the Kaspersky scanner can both run as daemons, saving repeated startups of heavy-weight programs. (Use amavisd, not amavis-perl, or even amavis-the-old-version ;-)
If you are going to use the Kaspersky AV package + Postfix, I suggest using the avcheck package instead of the daemon that comes with Kaspersky AV. You'll find it here: http://www.corpit.ru/avcheck/
The readme file is ok and contains instructions for setting up the daemon in a chroot jail.
Tarjei -- To UNSUBSCRIBE, email to debian-security-request@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org