Virus/Worm filtering

Use clamav from ports
Port:   clamav-0.60_1
Path:   /usr/ports/security/clamav
Info:   Command line virus scanner written entirely in C
Maint:  markun@onohara.to
Index:  security
B-deps: expat-1.95.6_1 gettext-0.12.1 gmake-3.80_1 libiconv-1.9.1_1 libtool-1.3.5_1
R-deps: arc-5.21e.8_1 lha-1.14i_1 unarj-2.43_1 unrar-3.20,2 unzip-5.50_2 zoo-2.10.1

Setup freshclam
0 9,21 * * * /usr/local/bin/freshclam --quiet -l /var/log/clam-update.log

Setup clamav
/usr/local/etc/clamav.conf
Make sure LocalSocket matches Exim
Set User mailnull to match Exim
Uncomment ScanMail