pop3 email problem

I am new to the forum and am searching for help.  I have recently experienced a virus problem.  I reformatted my hard drive.  Bought new virus software..loaded the software and cleaned my system which registered 1 virus found, 1 virus cleaned.  I use microsoft outlook for email.  My system is somehow sending out emails from me to addressees that I have no idea who they are.  I get mail dameon responses indicating something like addressees mail box full.  or your message contained the following errors.  I never sent one out.  Can anyone shed some light on what I am experiencing.  I have reformatted till blue in the face and virus scanned numerous times.  An help will be appreciated.    gary

yup. I'm a webmaster of large russian web-portal with webmaster@bla-bla-bla.com e-mail address. I rec'd hundreds error messages daily during last Sobig.f attack, obviously someone just used my e-mail address in "TO" field. You know, that there stil are some dumbs, who will open everything, came from webmaster@yahoo.com or support@microsoft.com even they have nothing to do with them. Unfortunatelly I have no practical idea how to fight with that. Only one hypotetical solution helped me to survive over these days - just KILL F$%#NG virus-making bastards!!! And I mean IT!

delete them like the rest of us!

I wouldn't do that unless no one EVER sends you a question about an error....