Dear Techies, I has an Active directory 2003 & Exchange server 2003 in our Environment, Recently we purchased new hardware for Active Directory so I installed win 2003 in new hard ware and promoted it as an additional domain controller, now I need to remove the old active directory machine so I am planning to transfer the roles to new active directory and demote the old active directory. I have an exchange 2003 in this environment if I transfer the roles to new Active directory what preliminary steps we have to take from exchange side, I tried it on test environment after transferring roles exchange is not working. Can anybody please explain the procedure how to transfer the roles and demote the primary domain controller in clustered exchange 2003 environment? Any Immediate help will be Highly Appreciated. Thanks in Advance Thanks & Regards Phani Kumar .B

Hi Phani, Install and promote new DC & GC, wait for 10-12 hours and let it replicate fully. You may check event logs for replication completion or use RepAdmin utility to find the status. Search for 2080 event in the application event log of Exchange server and make sure that new DC/GC is being detected by Exchange server. If doesnt then you may need to reboot the server or restart the Exchange services. Move all the roles to new DC and demote the DC/GC from Exchange server. Run ExBPA for any standard suggestions.