[EggsAckley]

I've received several in the guise of Undeliverable Mail, or whatever they call it. And my email is a little glitchy today. Grrrrrrrrrr...........

[lelio]

I've received several in the guise of Undeliverable Mail

That's no guise -- what happens is that a person infected with the virus sends email to you@yourdomain.com with a return address of clueless@victim.com. The mail server at @yourdomain.com rejects the email and then sends a bounce back to clueless@victim.com. It shouldn't do that last step.

I'm getting a lot of them with fakes From addresses like "bob" "alice" @ mydomain.com. That's really annoying.

Some anti-virus programs might not pick up on this one as the virus in the file attachment isn't really a MIME compliant file attachment. However some mail clients might still see it as an attachment.