I am having a strange problem with one of my ISA firewalls. I have run the secure mail server publishing wizard to publish an SMTP server, and yet cannot telnet to port 25 externally. When I do so, it looks like it connects to the firewall, but not to the actual SMTP server. It returns a blank page, which will disconnect after a minute or so. I am fairly sure that the SMTP server is ok, as I am able to set up a server publishing rule that works fine from another ISA server. Has anyone seen this problem before? Cheers, John