Exchange 2007 Install Error
I have setup a new 2003 R2 64bit system with SP2 fully updated. I am then doing all the prerequisites that is needed before installing exchange 2007 enterprise edition.When I run {setup /p /onomain name} I get the following error-----------------------------------------------Performing Microsoft Exchange Server Prerequisite CheckOrganization Checks .............COMPLETEDConfiguring Microsoft Exchange ServerOrganization Preparation ......FAILEDActive Directory operation failed on SERVER.MYDOMAIN.com. The object 'CN=All Contacts,CN=All Address Lists,CN=Address Lists Container,CN=COMPANY NAME,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=NAME,DC=com' already exists.The Exchange Server setup operation did not complete. Visit http://support.microsoft.com and enter the Error ID to find more information.Exchange Server setup encountered an error. Any assistance will be appreciated.
February 28th, 2008 11:33pm

Is your domain already prepared? Or are you trying to prepare the domain with a different orgname?
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February 29th, 2008 2:53am

It's an existing Win2003 Domain with an existing Exchange 2003 Org. We want to add the Exch2007 Cluster into the existing Exch Org.
February 29th, 2008 8:58am

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