A computer virus is a software program that has been intentionally created to cause a user grief, spread to other computers, or destroy data on an individual's computer.  To help prevent a computer from becoming infected by a virus, software developers have developed anti-virus programs that stay active on the computer helping to protect it.  It is important to realize that many computers do not come pre-load with these already installed and that if computers do come with these programs, the programs may expire within 90 days.

A virus or worm that is infected on your computer can cause this issue and/or another computer infected with a virus or worm is using your e-mail address as the e-mail address of who is sending the virus or worm.  When a network or user receives an e-mail infected with the virus that is capable of detecting the virus it will automatically reply to your  e-mail address. Below are some examples of automatic replies.