Why am I getting virus warnings from other mail servers, when I have not been infected with a virus?

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Question

I have received email warnings from other mail servers saying that I have attempted to send a copy of the Klez virus. I am sure that I am not infected, so why would I receive these messages?

Answer

When a machine is infected with the Klez virus, it will email itself to users in the Outlook or Outlook Express address book. There is nothing unusual about this as far as virus infections are concerned, however something that you may not know about the klez virus is that it will also often pretend to be someone else in the address book when it sends.

This means that the infected mail could appear to come FROM: anyone in the infected persons address book, so if your email address appears in an infected users address book, Klez could be emailing itself around using your details.

Of course, if you are running GMS Anti-Virus you would be protected from infections from viruses such as Klez. But if you are not running GMS Anti-Virus, you may not be infected this time, but what about next time?

Keywords:Virus, Klez, alert

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