>How can we explain to these people who keep getting fake bounced messages
>in their postmaster accounts that its Klez and not a problem with our servers?
Are you talking about the ones where people receive a bounce message with
the Klez virus? If you have virus scanning set up on the mailserver, then
they won't receive those.
If you choose not to scan for viruses (of if the bounce messages arrive
without the virus, in which case there is nothing to catch), you can simply
explain to your user that someone he knows has his address in their address
book, they got infected with a virus, and the virus started sending out
copies of itself with your user's return address. When the virus gets sent
to an address that is no longer valid or bounces for some other reason, the
bounce message goes to your user because their address was listed by the
virus as the sender of the E-mail.
It's the same as if someone started sending nasty letters in the "real"
mail with your user's address as the return address. If some of them were
sent to incorrect addresses, they would get returned to your user instead
of the real sender.
-Scott
---
Declude: Anti-virus, Anti-spam and Anti-hijacking solutions for
IMail. http://www.declude.com
---
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