I install exchange 2007 in domain,but i cant prepare second domain in other sitesetup errorsetup /preparedomainWelcome to Microsoft Exchange Server 2007 Unattended SetupPreparing Exchange SetupNo server roles will be installedPerforming Microsoft Exchange Server Prerequisite CheckOrganization Checks ......................... COMPLETEDConfiguring Microsoft Exchange ServerPrepare Domain Progress ......................... FAILEDAn unexpected error has occurred and debug information is being generated: Theparameter is incorrect.Parameter name: sidType/domainSidThe parameter is incorrect.Parameter name: sidType/domainSidExchange Server setup encountered an error.

Is it the same version/SP level which was used to install Exchange 2007 in other domain? Make sure that.Whaterrors you are getting in setup log? Run ExBPA on server an see if it gives any problem.

I use same 32 bit versionNew errorPreparing Exchange SetupNo server roles will be installedPerforming Microsoft Exchange Server Prerequisite CheckOrganization Checks ......................... COMPLETEDConfiguring Microsoft Exchange ServerPrepare Domain Progress ......................... FAILEDActive Directory operation failed on domain.comc. This error is not retriable. Additional information: The specified user does not exist.Active directory response: 00000525: NameErr: DSID-031A0F80, problem 2001 (NO_OBJECT), data 0, best match of:''The Exchange Server Setup operation did not complete. For more information, visit http://support.microsoft.com and enter the Error ID.Exchange Server setup encountered an error.Ebpa says infrastructure master is down

Dear customer: You can try the following command and check the effect. 1. Run setup /PrepareDomain:<FQDN of domain you want to prepare> to prepare a specific domain and check the effect. To proper assist you to troubleshoot the issue, please help collect the following information: 1. Check whether you disable Outbound Replication on the Schema Master? 2. If so, enable it, and rerun setup /PrepareDomain, 3. Check the effect. If the issue persists, send the ExchangeSetup.log that located at <system drive>\ExchangeSetupLogs\ folder to v-rocwan@microsoft.com for analyze. Note: when you send e-mail to me please add the subject of the post. Thanks for your time and cooperation. Rock Wang - MSFT

Finally I have managed to solve the problem. Due to the bad connection between sites, the replication was not working properly... and this was the reason. Thank You all

Hi,I faced the same Problem and what i did ,i just add the Exchange Servers USG to the Manage Auditing and Security Log Policy for the child DC OUpolicyDomain Controller Security Policy\local Policies\User Rights Assignment\Manage Auditing and Security LogMuath Deebmuath@ex-consult.commdeeb

I've had exactly the same problem. None of these solutions worked. I've finally managed to solve the problem by running setup.com /PrepareDomain on a Domain Controller (DC) of the root domain. Worked like a charm.