I am using outlook as email client. I have Norton Corporate Anti Virus running. I have daily updates. I turned off system restore, ran Nortons and shows NO VIRUS. Everyday though there are emails being sent out and returned saying email failure. I dont get it??? Any help would be appreciated. It's hard to download a tool to repair the virus if I dont know what the virus is. Thank You

Are you sure that you are the sender? It is quite common that your address has been "spoofed" and the emails are are actually being sent by people that have your address in their address book and were infected? This is not the only method of spoofing, but it is the most common one.

Yeah spoofing is pretty common, friend is infected and you are in their address book.... You do know that there are tons of other bad things out there besides viruses, and many of them are not even seen by virus scanners? You also run Spybot S&D and/or Ad-Aware, or one of the free online trojan scans...or HouseCall as a back-up???

Obligatory "don't use Windows" comment here. DublA is right that there are " tons of other bad things out there besides viruses". Almost all of them are targeted at the Windows OS and its associated programs (Internet Explorer, Outlook Express, etc). Knowing that, why bother trying to secure Windows? Why not just use another operating system that is secure by design? If you insist on running Windows, at least use non-Microsoft alternative applications. Using Firefox instead of Internet Explorer and using anything instead of Outlook will remove you from the vector of the overwhelming majority of viruses and spyware.