Just set a recipient policy in Exchange 2003 system mmc to set the @host.com address you wish to use for mail. Not required, but you can also setup a UPN for the new name if you wish the user to logon with that name. (ie bgates@xxxxxxxxxxxxx) Joe -----Original Message----- From: Scott [mailto:sreichardt@xxxxxxx] Sent: Monday, February 09, 2004 11:41 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] OT: Domains/Exchange 2003 Using primary and secondary Win2k sp3 AD servers. Citrix MFXP FR3. When I first built our network, I didn't plan on hosting our own exchange server so I didn't put alot of thought into the name of our domain. Now I need to add Exchange 2003 to the domain but the email addresses are going to be a different name than our current AD Domain name. From what I've gathered, I need to demote the DC's, change the names and dcpromo them back to DC's to get the domain name changed. I really don't want to screw things up in the process. Is there an easier way to do this either through AD or through Exchange itself? Thanks, Scott