[Mimedefang] Using spamtrap to reject shotgun attempts

[Kenneth Porter]

I've got some obsolete addresses that receive nothing but spam. They 
routinely show up as one recipient in a group of legitimate recipients in a 
spam attempt, and many of these score low enough to get by. I'd like to 
reject the entire transaction for all recipients if one of my spamtrap 
addresses is in the list.

Alas, filter_recipient only affects the entire message if the action is 
DISCARD, but not REJECT. Is there some way to keep state here so that the 
message can be rejected for all recipients if a spamtrap is in the list?