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How can I configure Microsoft Exchange 2013 to use my Email Security Gateway as an outbound relay?

  • Type: Knowledgebase
  • Date changed: 10 months ago
Solution #00007101 

All Email Security Gateways in use with a Microsoft Exchange 2013 server, all firmware versions.

After configuring the Email Security Gateway to relay outgoing mail (make sure to do this first as described in Solution #00002087), you must configure your mail server to relay all outgoing mail through the Email Security Gateway. To do this on an Exchange 2013 server, you must create a new "Send Connector.? To configure one, follow these steps:

Use the EAC to create a send connector for email to be sent to the Email Security Gateway:

1) In the EAC, navigate to Mail flow > Send connectors, and then click Add +.

2) In the New send connector wizard, specify a name for the send connector and then select Custom for the Type. You typically choose this selection when you want to route messages to computers not running Microsoft Exchange Server 2013. Click Next.

3) Choose Route mail through smart hosts, and then click Add +. In the Add smart host window, specify the IP address of the Email Security Gateway, such as Click Save and Next.

4) For Smart host authentication, leave it on None. Click Next.

5) Under Address space, click Add +. In the Add domain window, make sure SMTP is listed as the Type. For Fully Qualified Domain Name (FQDN), enter * to specify that this send connector applies to messages sent to any domain. Click Save.

6) Make sure Scoped send connector is not selected and then click Next.

7) For Source server, click Add +. In the Select a server window, choose a server and click
Add +. Click OK.

8) Click Finish.

If the Email Security Gateway has been configured for Outbound Relay, your outgoing mail should now go through the Email Security Gateway.

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