On Linux Server i use ClamAV antivirus for email scanning.
ClamAV is a Free AntiVirus software for Linux, you can find mode details about clamav at
You can update clamav virus defnition with with command freshclam
[root@server10 root]# freshclam
ClamAV update process started at Wed Mar 29 12:19:52 2006
main.cvd is up to date (version: 36, sigs: 44686, f-level: 7, builder: tkojm)
Downloading daily.cvd [*]
daily.cvd updated (version: 1361, sigs: 3527, f-level: 7, builder: sven)
Database updated (48213 signatures) from database.clamav.net (IP: 205.139.192.13
)
[root@server10 root]#
ClamAV update process started at Wed Mar 29 12:19:52 2006
main.cvd is up to date (version: 36, sigs: 44686, f-level: 7, builder: tkojm)
Downloading daily.cvd [*]
daily.cvd updated (version: 1361, sigs: 3527, f-level: 7, builder: sven)
Database updated (48213 signatures) from database.clamav.net (IP: 205.139.192.13
)
[root@server10 root]#
It is good idea to run it in cron job, so virus defnition is always uptodate.
ClamAV is ported to Windows, you can find download Windows version of ClamAV from