Eliminating Virus Spam

    I am not that familiar with the details of how mailing list servers work. 
Is it possible to configure a mailing list server (e.g. 
majordomo(_at_)ietf(_dot_)org?)
to do a virus scan on an incoming mail message before forwarding it to the
mailing list, bouncing the mail message back to the sender if a virus is
detected?  (Or, since From addresses might be faked, maybe just tossing it is
the right answer.)  If such a capability doesn't exist, maybe it should...


John