Does anyone know if there is any recourse for people using my domain as a from-address on spam? Some bastard is sending 'discount valium' crap from firstname.lastname@example.org... just as a from address, not as an actual route from what I can decipher of the header-info, but I'm getting undeliverable message warnings in my inbox from people it's been sent to. I plan to go block incoming messages to that address, but I'd rather nail the slimy little creep to the wall. And is this going to get my address listed on spam-blockers? Rargh.