Hi, I am trying to implement RPC over HTTP.. My front end exchange is in a DMZ as we currently use this for Webmail and passes through our pix firewall.. However all the documentation that I have seen is the the front end and back end should be inside the network.. I do not want to change the structure or security of my network.. Both Servers are on the domain with ip routing in place.. I need exactly how to do this, like certificates and configuration if i can get that information here..Is there a way around this? Thanks in advance