We had to do this at a previous company and it can be a bit nasty. A tool that helped us a lot, called U-Promote, by UTOOLS allows you to demote PDC and BDC's to member servers, so you can change the domain name without reinstalling the O/S... member servers are easy to change the domain name on. It was a wise investment. I am assuming that the O/S is NT. We promoted a member server to PDC, and demoted the PDC to a member server so it's domain name could change and be brought up again. Since it was the only server on the domain, it became the PDC. We then repeated the steps with the BDC. The member servers came over easily. Exchange Server cannot be demoted and there are many places to make changes -- there are Q articles on this. However in retrospect it would have been better and saved us a lot of time if we had just exported all the users mailboxes to pst's, reinstalled the Exchange on the new domain and imported the pst files into the new email boxes. Create a check list of your steps so you can back track... it was very helpful when I did it. Then you have the workstation domain properties to change. Win 2k is easy, but Win 98 machines are more difficult... we had to remove all Win 98 machine names from the server and add to the domain http://www.algintech.com/UTools/UPromote.asp Good Luck !! Linda Wilson Information Technology Specialist National Bank of the Redwoods - www.nbronline.com 2227 Capricorn Way, Suite 100 Santa Rosa, CA 95407 lwilson@xxxxxxxxxxx 707-522-5230 voice 707-522-5271 fax 707-217-8359 cell -----Original Message----- From: Anantha Kumar S [mailto:Anantha.Kumar@xxxxxxxxxxxx] Sent: Friday, December 13, 2002 4:07 AM To: [ExchangeList] Subject: [exchangelist] domain name change http://www.MSExchange.org/ Hi all Our company is planning to change its name. We will be changing our domain name also. I have a exchange 5.5 with 60 users. 1 Should i reinstall a new exchange server with newcompany name or can i use existing old server and rename it 2 How to move users from old to new. that is users@xxxxxxxxxxxxxx to users@xxxxxxxxxxxxxxx 3 Is there any thing that i have to do at ISP level. Can any one help me with this, any procudure or any write up is available on the net, would be of great help to me thanks in advance. anantha ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: lwilson@xxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')