Set inbound e-mail authoritative for a domain in Exchange 2010

To set an authoritative inbound e-mail domain

Browse to the following folder, where C:\Program Files\Microsoft\Exchange Server is your exchange installation location:

C:\Program Files\Microsoft\Exchange Server\TransportRoles\Shared\

Open the file Domains.config with notepad (or any other text editor).

Then edit this file as follows:

Domain Name : This domain name can be a DNS name, like woodgrovebank.com, *.woodgrovebank.com or * (all domains)

Authoritative : Boolean (True or False)

For example:

domain name=”woodgrovebank.com” authoritative=”true”
This means all mail for woodgrovebank.com is allowed.

domain name=”*” authoritative=”false”
This means the server is an Open Relay server

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