What is going on with my server?

[abrannon]

My server is catching dozens of emails a day that contain viruses when they are being sent from it. These are out-bound emails, but they are not from any of my users.

All of the updates are current on the server. It has the latest McAfee Virus Scan software. We are using Sybari's Antigen to scan the Exchange Server, for inbound and out-bound viruses.

Other than the 100+ Viruses that we recieve a day every thing seems ok, except the fact we are attempting to send infected emails from unknown users.

Any help would be appreciated.

 

[matt4x4]

could be one of 2 things -
1. viruses that automatically send out from an infected system always use another email address either obtained from email headers in the inbox or actual contacts in the address book, so likely it will show as an external source. So see if any of your users have any of the names in their address book - may help you narrow down the infected pc.
2. It could also be that some source external to your server is attempting to relay the mail through your mail server - that's a security issue with your server that you may have to plug.