We have an email "toaster" that accepts smtp connections from the Internet, runs some blacklisting checks, discards email to non-existent recipient addresses, then sends all mail on to another server where final delivery takes place.
No delivery takes place on the toaster. If possible, I'd like to add some spam checking to the gateway toaster, but I'm not sure if/how I can do this before the mail is forwarded on to the next machine. I've found info on the web about using SpamAssassin as a content filter... Can I insert a content filter before a relay via virtual_alias_maps or relay_recipient_maps? Or are all relays done before any content filters could be run? Is there a clean way I can insert a content filter before the mail is relayed? I'd prefer to have a good feeling for whether spam checking on there toaster will work before I start experimenting and possible break our incoming email. -- Vicki cfcl.com/vlb twitter.com/vlb
