I am on XP with Outlook 2002 SP2. I have been getting Mailer Daemons returned to me on messages I haven't sent. Today when I checked my mail for the first time I saw Norton scan an outgoing message and I received a Daemon back. The message has to do with printer cartridges. There are no new messages in my sent folder. In the body of the Daemon I see a file winmail.dat. I did a search in my pc and only found a winmail1.dat 1kb. Is this a normal file in XP? Is there a way to find the program that's sending this spam from my pc? I ran spybot and adaware with the latest updates. I also ran Norton and found nothing. I asked for help from my ISP but they haven't helped. Are there any mail trace programs? Any suggestions?