On Sat, 20 Mar 2004 09:18:07 -0500, K wrote > I would say that your friend that "sent" the eml attachment sent you > a virus and it piggybacked on stuff that you sent out...these virii > are unable to run on the mac but can piggyback out when you send > stuff... If the virus/worm isn't able to run on the machine (mac) then it can't "piggyback" unless you actually attach the original infected atachment to a new message. The other replies indicating that your address has been stolen and used to spoof the other recipients is what is almost certainly happening unless you are passing the attachments along. Rich