Stop the problem at the source - the mail AV. You can configure it to not send notices. Do it now. -----Original Message----- From: Ted [mailto:tdoholis@xxxxxxxxx] Sent: Wednesday, February 15, 2006 9:39 AM To: [ExchangeList] Subject: [exchangelist] block email from going to certain addresses Hi I am trying to figure out how to block outbound email addressed to certain addresses from being sent. A partner of ours has an email address on their website that has been picked up by someone and they are using that address to send virus' in. My mail AV sends a notice to the sender advising them of this and I need to stop these notices from being sent to this particular address. I am using Exchange 2003. Any ideas? Thanks