How to stop receiving W95.hybris.worm

Altho my company has AV running on the mail server and incoming mail with a virus is quarantined, (so we are protected), we are getting about 3-5 infected e-mail messages a week.

Incoming infected e-mail creates a notice and is sent to me for “action”. From what I have read about W95.Hybris.Worm, it erases the return addr. when it sends its self.

So the question is, how can I begin to notify the sender of the e-mail he is infected to get him clean or to stop sending e-mail when the return addr. is not there?

Help, I’m drownding in these notices!