D. BARRETT A way to combat Spam is to send a "fake bounce" back to spammers in the hopes that because your email bounced, you'll be removed from their mailing lists. The best way I've found to do this with my POP email boxes is first to check my mail with Mail Siphon 2.5, which allows me to view the mail before I download it to my computer. Mail Siphon has built into it this nifty "fake bounce" feature that let's you send the bounces with a single click! [from mrbarrett.com]
(Version 2.5)