On Fri, Sep 10, 2004 at 01:21:17PM -0500, Jeff Brenton wrote: > AY> Can you install a virus scanner? Clam Anti-Virus is successfully > AY> blocking all of the virus-infected messages coming from this list > AY> on my MTA. > > A general virus scanner is in the works for our system, but it will > require that we accept the mail prior to scanning it. I'd rather NOT > accept things that are going to be bounced, if possible. The scanner > is a last-ditch effort to keep infected files from reaching the user. > > The reasons for avoiding accepting a bad message are several - I've > seen too many instances where the accept-analyze-bounce processing > chain is used to create an open relay. That's why I have Postfix > verify that an address is deliverable by checking the DBMail aliases > table. And why I wanted to detect UPX files in the MTA. [...]
I don't know about Postfix, but Exim and Sendmail provide methods to scan and reject messages after DATA. xn
