At 12:48 PM -0600 on 10/8/08, Robert MacLeay wrote: >Today, I received a form letter (Comcast Customer Security Assurance Notice) >with return address <abuse-noreply at comcast.net> telling me that "Comcast has >determined that your computer(s) have been used to send unsolicited email >("spam"), which is generally an indicator of a virus. For your own >protection and that of other Comcast customers, we have taken steps to >prevent further transmission of spam from your computer(s)." Yes--this is the letter they send if you are using port 25 and someone sends spam using your return address. The problem is not on your computer so you can of course ignore their antivirus software instructions. Since you say you have been using port 587, I am not sure why you are having a problem, though. You might try calling Comcast. Surprisingly, almost all the representatives I have spoken with have been knowledgeable and helpful, especially if you are friendly toward them. I found this out when I had to help an elderly friend with a problem he was having. That is in fact why I decided to try them. David