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Specifying Routing of Email

You can route email destined for particular email domains either to a specific mail server, or by using DNS MX records. This mechanism allows you to specify where to direct:

• Messages for your domains (incoming mail), received from the Internet.
• Messages for domains other than your own (outgoing mail), forwarded from an internal SMTP Gateway.

You can use a wildcard * when specifying a domain name, for example to specify a mail server for external delivery if you are not using DNS. See these example uses of wildcards.

To add or edit a route for a domain

1. From the System Center Home page, click Mail Settings. The Mail Settings page appears.
2. Select General Settings to display the General Settings page. The Email Routing area contains a table listing current routing information.
3. Click New. The Add Email Route dialog is displayed.

4. In the Add Email Route dialog, enter the following information:

   • In Domain, specify the domain for which you want to provide routing information.

   • In Route, select either Using DNS or To a server.

     If you specified To a server above, specify the server's fully qualified host name or IP address, and the port number to use. If you want to provide a failover configuration, you can specify a fully qualified host name that resolves to multiple DNS A records, or you can enter the VIP if you use a load balancer.
     

   • Select a Connection Profile, which defines your TLS settings. The information box at the top of the dialog displays the status of your authentication and TLS settings.
   • You can also include any authentication settings that might be required to complete the SMTP connection.
     1. Select the Authentication type required by the server (AUTH PLAIN/LOGIN or NONE).
     2. Enter the mail server's Username and Password and then Confirm Password.

     If you have multiple routes to the same server, you must ensure that the same connection profile is selected in order for TLS to be applied. You must also ensure that the AUTH configuration is the same for all routes to the same server when using an IP address for routing.

     It is highly recommended that you enable TLS on authenticated SMTP connections.

5. Click Add or Update to add the updated entry to the routing table.

6. To change the priority of an entry in the routing table, select the entry and click or as required.

To remove a route for a domain

1. Move the mouse pointer over the Email Routing area, select the item in the list and click Delete. A Confirm Delete dialog box is displayed stating 'Are you sure you want to delete the route?'.

2. Click Yes to remove the entry from the Email Routing table.

See also...

• About Log Levels
• About Mail Settings