We have a Cisco Pix 515e firewall that has a web server/exchange 2000 (same server) on the dmz. We also have the internal network that is on a seperate subnet and different domain name. We would like to add a new exchange 2003 to the internal network and migrate mailboxes over to the exchange 2003 and then turn off exchange on the dmz. The dmz is a different subnet and a different domain name from the internal network. For example, the dmz is dmzXX.com and the internal is xx.com. Can this be done?