[Kroupware] postfix question

[Wim Bakker]

Hai,

is it possible to have postfix have
its activities filtered by an external
virus scanning tool like RAV antivirus?
Where I work , we currently use postfix
together with RAV antivirus scanning
on both incoming and outgoing mail.
I plan to have that postfix replaced by 
kolab for testing, but it would be absolutely
necessary to keep the antivirus scanning intact.
Don't I break anything when I edit the 
kolab templates for postfix to add that
virus scanning?
Is it allso possible to have mail for a user
being forwarded to another email account?

TIA
Wim