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Exchange 2010 - SETUP /PREPAREAD Error Message

ddns asked
We are attempting to install our first Exchange 2010 server into our domain and have encountered the following error when attempting to update the schema:

The domain 'XXX.com' is configured authoritative or non-authoritative
inconsistently among multiple recipient policies.

Can someone please provide information on how to resolve? Thanks,
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Shreedhar EtteTechnical Manager
Top Expert 2010

Does there are any other exchange server in the domain xxx.com?
The other Server that you have is it Exchange 2003 or Exchange 2007?
BusbarSolutions Architect

Take a look at Organization Configuration - Hub Transport - Accepted Domains in Exchange Management Console. Change the type of the Domain in the error message to "Authoritative"
Solutions Architect
it looks like you are trying to upgrade from Exchange 2003.

If this is the case then open Exchange system manager  -> Recipients -> Recipient policies

and check the policies you have, you will find at least 2 showing xxx.com where one is with the "this exchange organization is responsible for this domain" checked and the other not.

You should fix this issue by checking it on both or deleting one of them