In my case, I got an initial spike of incoming bounce notices which soon tapered off and stopped. I don't recall exactly, but I don't think it went on more than two or three days. I figure the spammer spoofed my address once or for a short time, then spoofed another address in his list, then another, and so on.
If it is ongoing in your case, I don't know exactly what you can do. Somehow you need to do whatever you can to confirm as best you can that your machine is not sending the emails. I don't know enough to advise you thoroughly on that. Maybe someone else here can give you some tips. Wilders Security Forums Wilders Security Forums - Powered by vBulletin
is good and the members there are friendly and eager to help. But there, as here, search and read the stickies first.
EDIT: I do doubt that your machine is sending the emails. The fact that you are getting bounce notices from email from addresses not in your address book indicates some spammer has, as NJ put it, made the emails appear to have come from you. Posted via BlackBerryForums.com Mobile