I have created a DMZ Perimeter Network using ISA 2004. Obviously I have an internal interface and external inferface as well since it is my main firewall. I am wanting to put my Barracuda Spam Firewall on the DMZ A network. I cannot establish communications between the DMZ A and Internal network. In my network rules I have added a rule to route communications between the two networks. If I put a laptop on the DMZ and try to telnet to my Exchange server using port 25 I notice that on the ISA Monitoring the action states "Initiated Connection" but I get nothing but "Connecting" on the laptop. I'm sure it has something to do with the way it's routing and I've exhausted all of my internal resources.