Ive updated the AD forest schema and prepared the Exchange organization for Exchange 2007. I ran the following commands fromour root DC using the Exchange 2007 SP2 32bit binaries o Setup /PrepareLegacyExchangePermissions - ok o Setup /PrepareSchema - ok o Setup /PrepareAD /OrganizationName:TEST - ok o Setup /PrepareDomain:asia.com - ok o Setup /PrepareDomain:china.com - ok When I attempt to run Setup /PrepareDomain:india.com fails with the following error that a domain controller in theindia domain could not be contacted.I then attempt to run Setup /PrepareDomain:india.com under the India domain controllers but I am getting this error -> Prepare Domain Progress ......................... FAILED Active Directory operation failed on rootDC.com. This error is not retriable. Additional information: The specified user does not exist. Active directory response: 00000525: NameErr: DSID-031A0F80, problem 2001 (NO_OB JECT), data 0, best match of: ''Please take note that we have Windows 2003 domain controllers and Exchange 2003 mail servers.Please help.

Hi, Please manually add the Exchange Install Domain Servers group from the child domain as a member of the Exchange servers group in the root domain.After that, please run setup /preparedomain:<fqdn of child domain> again. Related information to share with you: How to Prepare Active Directory and Domains http://technet.microsoft.com/en-us/library/bb125224(EXCHG.80).aspx Regards, Xiu