I use my MTA (Postfix) to filter out mail before it makes it to the persons inbox. I filter out words in the subject and body. If it contains the word "penis" or something like that I have postfix accept the message and then trash it. The intended recipient never knows it existed, and the sender thinks it was sent successfully.
/* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
