Configure an accepted domain within your Exchange organization as authoritative in Exchange 2013

Article Summary: This article contains information about configuring an accepted domain within your Exchange organization as authoritative in Exchange 2013

You can't create an accepted domain that has the same name as an already configured remote domain. Before you configure an accepted domain, you must verify that a public Domain Name System (DNS) MX resource record for that SMTP namespace exists and that the MX resource record references a server name and an IP address associated with your Exchange organization.

In the EAC, navigate to Mail flow > Accepted domains, and click Add Add Icon.

In the Name field, enter the display name for the accepted domain. Each accepted domain for your organization must have a unique display name This may be different than the accepted domain.

In the Accepted domain field, enter the accepted domain. Specify an SMTP namespace for which your organization accepts email messages.

Select Authoritative domain. This option is for email relayed to servers within your Exchange organization for an accepted domain that hosts mailboxes for all the recipients within an SMTP namespace.

Click Save.