antivirus for linux mail server

view full story

http://www.linuxquestions.org – dear gurus, we want to install linux antivirus for mail server. can someone advise what all possible i can try testing trials or free. which one consider best the main problem that i want to know if the password zip file scan, can any antivirus scan and deliver it. as barrcuda appliance challenging that they can scan zip password protection and give delivery. i do not understand, i want to do practical testing of antivurs to install on linux mail server suggest advise guide plz regards (HowTos)