rtk wrote:

Mail is being returned to me because it contains a virus, mail that
supposedly COMES FROM ME.

It may, but it may not.

Viruses spoof return addresses to achieve maximum confusion. The virus could
originate from someone else, you could be in their email address book, and
the virus forges the "from" line to make it look like its coming from you.

Welcome to cyberterrorism.

gtoomey