Thomas, This http://www.isaserver.org/shinder/tutorials/index.htm doesn't work. Setting Up the SMTP Filter and Message Screener (January 2001) - ISAserver.org One topic that comes up a lot is how to get the SMTP Filter and Message Screener to work properly. This makes sense because the Filter and Screener aren?t implemented in a very elegant or intuitive fashion. While it appears from the ISA Management interface that its as easy as enabling the SMTP filter by putting a check in the checkbox, that just isn?t the case.. Click here I really need to find the secret by Monday. Thanx Bob Cheeseman