[CentOS] Anti Virus and Anti Spam

Sat Aug 30 02:55:49 UTC 2008
horas simalango <horasima at gmail.com>

New be in linux!
Currently I have Install DNS, Email and Web server using centos 4.3.
All functions are running properly!
What anti virus and anti spam recomended for me to install to my
server? What I have to configure after installing anti virus and anti
Would some one help me please.! Now many spam mail come to user mailbox!

Thank's 'n Regards