I currently have a postfix system setup as a relay in the DMZ of my network. Mail is also being relayed to it from a partner source. I am using a recipient lookup table, so any message coming in that does not match this table will be bounced. I need to have the bounce messages not go out they are causing quite a bit of traffic. I would like to have them be deleted at source(my postfix box). Need help getting this done if possible. Thanks in advance for any help (bsd newbie).