Hi, Peter I am having a situation with publishing my exchange server. At first I did not have my exchange server set up as a secureNaT client due to it being multihomed for routing, I now have it setup with the gateway IP being the same as the ISA server internal IP. I have used the Publish server wizard to create the Secure Mail server rules, in doing so it finds the external Ip just fine but when I go to find the internal ip of the exch server it finds the computer by name but when I click the Find button it comes back with an error msg. saying it cannot find the IP address of that server. So I proceed with entering the ip addr anyway, the rules are created but then they show the rule with a reference to my external ip of the ISA server. Also, I had the smtp service running to see if that would do it but all my replys were being bounced back with relay errors. I disabled the smtp service on the ISA box and the errors stopped but the mail is still not reaching my mail server. Any pointers would be helpful thanks. Peter