Applies to: Exchange Server 2013
Topic Last Modified: 2012-10-11
In some instances, you may want to configure an accepted domain for a business unit in which some or all recipients in the domain don’t have mailboxes in your Exchange organization. This can occur, for example, when an organization shares the same SMTP address space between two or more different email systems. For such scenarios, you can configure an accepted domain as an internal relay domain.
|Do not perform this on a subscribed Edge server.|
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 an internal relay domain
- In the EAC, navigate to Mail flow > Accepted
domains, select the domain you wish to configure, and then
click Edit .
- 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.
- Select Internal Relay Domain.
- Click Save.
How do you know this worked?
To verify that you have successfully configured an accepted domain as an internal relay domain, send a message from the internal relay domain to a mailbox within your Exchange organization and verify that it is received.