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Create a Send Connector for Email Sent to the Internet

 

Applies to: Exchange Server 2013

Topic Last Modified: 2013-03-29

By default, Microsoft Exchange Server 2013 doesn’t allow you to send mail outside of your domain. To send mail outside your domain, you need to create a Send connector. The following graphic illustrates mail flow when you create a Send connector to send mail to the Internet.

connector_send_onprem_internet

Interested in scenarios where this procedure is used? See the following topics:

  • Estimated time to complete: 15 minutes
  • You need to be assigned permissions before you can perform this procedure or procedures. To see what permissions you need, see the "Send connectors" entry in the Mail Flow Permissions topic.
  • See Deploy a New Installation of Exchange 2013 if you are beginning your installation. After the installation you can use the steps in this topic to create your outbound connector.
  • For information about keyboard shortcuts that may apply to the procedures in this topic, see Keyboard Shortcuts in the Exchange Admin Center.
tipTip:
Having problems? Ask for help in the Exchange forums. Visit the forums at: Exchange Server, Exchange Online, or Exchange Online Protection
  1. In the EAC, navigate to Mail flow > Send connectors, and then click Add Add Icon.
  2. In the New send connector wizard, specify a name for the send connector and then select Internet for the Type. Click Next.
  3. Verify that MX record associated with recipient domain is selected, which specifies that the connector uses the domain name system (DNS) to route mail. Click Next.
  4. Under Address space, click Add Add Icon. In the Add domain window, make sure SMTP is listed as the Type. For Fully Qualified Domain Name (FQDN), enter *, which indicates that this send connector applies to messages addressed to any domain. Click Save.
  5. Make sure Scoped send connector is not selected and then click Next.
  6. For Source server, click Add Add Icon. In the Select a server window, select a Mailbox server that will be used to send mail to the Internet via the Client Access server and click Add Add Icon. After you've selected the server, click Add Add Icon. Click OK.
  7. Click Finish.

Once you have created the Send connector, it appears in the Send connector list.

In Exchange 2013 you can use the FrontendProxyEnabled parameter of the Set-SendConnector cmdlet to route outbound messages through the Client Access server. This parameter is not set to $true by default, but in many cases it can consolidate and simplify mail flow, especially if you are working with an environment with a large number of messaging servers.

This example sets the FrontendProxyEnabled parameter to $true on a Send connector.

Set-SendConnector "Contoso.com Send Connector" -FrontendProxyEnabled $true

To verify that you have successfully created a Send Connector for email sent to the Internet, send mail from one of your users to an outside recipient and verify that the message arrives successfully.

 
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