> > What you can do is create a restriction class to check the sender > > and the recipient, and reject the message if both match. The > > general procedure is outlined here, with some examples similar to > > what you're asking: > > http://www.postfix.org/RESTRICTION_CLASS_README.html
I don't see how this addresses the problem of rejecting messages that are both: -- From: a certain address (or domain), and -- To: a certain address (or domain). For example, I'd like to block messages if: The sender matches /.*@yahoogroups\.com/ -and- The recipient matches /.*@client[1-6]\.domain2\.com/ Would you be so kind as to provide an example? Thanks much, Michael