Which AV running as daemon

Hello,

I am using qmailscanner with spamd and uvscan. Uvscan is heavier and 
heavier and I am now looking for a antivirus running as a daemon. I 
think it s probably lighter and will give my hardware some breaks.

Which AV should I look at (in a professionnal hosting) ?

--
Cedric Fontaine
http://www.terroirsquebec.com

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