Adding a domain-based route

Use the following steps to add a domain-based delivery route on the page Settings > Inbound/Outbound > Mail Routing:

Steps

  1. Click Add.
    The Add Domain-based Route page displays.
  2. In the field Name, enter a name for your new route.
  3. From the pull-down menu Route order, select an order number to determine the route’s scanning order.
  4. From the pre-defined domains in the pull-down menu Domain group, select a destination domain.

    Default is Protected Domain. Information about the domain group appears in the Domain details box.

    To edit your selected domain group, click Edit to open the Edit Domain Group page. See Editing a domain group.

  5. Select the delivery method:
    • Based on the recipient’s domain (using the Domain Name System [DNS])
    • Based on SMTP server IP address designation (using smart host) If you select this option, an SMTP Server List opens.
      1. Click Add.The Add SMTP Server dialog box displays.
      2. Enter the SMTP server IP address or hostname and port.
      3. Mark the check box Enable MX lookup to enable the MX lookup function.
        Important:

        If you entered an IP address in the previous step, the MX lookup option is not available.

        If you entered a hostname in the previous step, this option is available.

        • Mark the check box Enable MX lookup for message delivery based on the hostname MX record.
        • If you do not mark this check box, message delivery is based on the hostname A record.
      4. Enter a preference number for this server (from 1–65535; default value is 5).

        If a single route has multiple defined server addresses, mail is delivered in order of server preference. When multiple routes have the same preference, round robin delivery is used.

    You may enter no more than 16 addresses in the SMTP Server List.

  6. Select any desired security delivery options:
    1. Enable email traffic to use opportunistic TLS protocol; select Use opportunistic Transport Layer Security (TLS).
    2. Ensure that users supply credentials; select Require authentication. Enter the appropriate user name and password in the Authentication Information box. You must use the SMTP server IP address delivery method for users to authenticate.