ClamAV is a Free (GPL) Virus scanner for Linux, Solaris, *BSD, AIX, MacOSX, Cygwin B20 on multiple architectures such as Intel, Alpha, SPARC, Cobalt MIPS boxes, PowerPC and RISC 6000. It started as a C-based reimplementation of of the abandoned Java !OpenAntiVirus?. Signature updates are available in an open FileFormat.
ClamAV comes with a tool called freshclam which updates the virus database automatically: it downloads the database from !http://database.clamav.net/ (a round robin record that tries to equally balance the traffic between all the database mirrors) which is split into two files called main.cvd and daily.cvd. daily.cvd is updated frequently and occasionally is merged with main.cvd.
ClamAV can be used by ContentScanners to scan Emails on many MTAs. The ClamAV package includes one written by Nigel Horne for SendMail called clamav-milter. Another one is smtp-vilter. They both use the SendMail "milter" API. You can also use ClamAV to scan all POP3 traffic with pop3vscan. See ClamAvPopVscan. In fact you can even use ClamAV to scan your incoming mail in Outlook: just get ClamWin and install the Outlook Plugin!
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9 pages link to ClamAV:
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