Applies to: Exchange Server 2013
Topic Last Modified: 2012-09-27
If a domain belonging to your organization hosts mailboxes for all the recipients within an SMTP namespace, that domain is considered to be authoritative. By default, one accepted domain is configured as authoritative for the Exchange organization. If your organization has more than one SMTP namespace, you can configure more than one accepted domain as authoritative.
What do you need to know before you begin?
- Estimated time to complete: 5 minutes
- You need to be assigned permissions before you can perform this
procedure or procedures. To see what permissions you need, see the
"Accepted domains" entry in the Mail Flow
- You can't create an accepted domain that has the same name as
an already configured remote domain. For example, if you have
fabrikam.com configured as a remote domain, you can't create an
accepted domain for fabrikam.com.
- 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
- For information about keyboard shortcuts that may apply to the
procedures in this topic, see Keyboard Shortcuts in
the Exchange Admin Center.
Use the EAC to configure an accepted domain as authoritative
If an accepted domain for your Exchange organization hosts all the mailboxes for recipients within that domain’s SMTP namespace, you may want to configure it as an authoritative domain.
- In the EAC, navigate to Mail flow > Accepted
domains, and click Add .
- 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. For example, the domain contoso.com could have a display
name of Contoso Local Accepted Domain.
- In the Accepted domain field, enter the accepted domain.
Specify an SMTP namespace for which your organization accepts email
messages. (for example, Contoso.com).
- 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.
|To configure an accepted domain that has already been created, select the domain from the accepted domains list and click Edit . You can configure more than one domain as authoritative.|
How do you know this worked?
Your new accepted domain will appear in the accepted domains list in the EAC. To verify that you have successfully configured the accepted domain as authoritative, send mail to the domain and verify that it is received.