I have and Exchange 2003 Enterprise Server mail server that I am brining online as our only mail server, but would like to move OWA to a Front End mail server in a DMZ when we are able to get additional hardware to run it. I was wondering if it is possible to setup a front end mail server after a single exchange server is already in place handling all mail services. It seems like I had read somewhere that the Front End servers need to be setup before back end servers. Any feedback is appreciated.