I have the ample amount of time to learn ISA before having to manage it, unlike I am sure most of you. I have several machines running and on my ISA box I want to install GFI Mail Security (Gateway). I have exchange 2003 up and running on a separate machine and have the mail flowing. What publishing rules do I need to have in place before GFI is enabled? Will it be like exchange as it is a mail server? Thanks Brad Mitchell