Making Exim discard things in general is simple: you create an Eximrouter using the redirect driver that blackholes messages, and guardit with a suitable set of conditions. I decided to be safe, so we onlydiscard locally generated bounces of spam that are going to an outsidedomain.

(You can detect locally generated bounces with the condition ' and{{!eq{$interface_port}{25}} {!def:return_path}} '. The easy way todiscard messages is

We have a spam forwarding problem. Specifically, we forward spam,although not through choice; it's a political mandate not to imposefiltering on people, and some of the people who don't filterforward their email elsewhere, and predictable things ensue .

We're dealing with this in three ways:

• we use a different source IP address when forwarding spam-tagged email , splitting good emailtraffic away from the spam so we avoid contaminating the formerwith the latter.

  This is especially important for places where