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Note: Your DNR and Zone Manager applications contain internal help files. From within your DNR or Zone Manager application, you can click on this help icon:

Our internal help system appears, enabling you to view help topics concerning the application.

Because of the uniqueness of our mail servers, and their configurations, we cannot act as a backup mail server for any other remote mail servers.

Establishing Priorities for Mail Servers

You can assign priority to your MX records so that they are accessed in the order you want. Using multiple MX servers provides redundancy and further ensures that any available mail server for which the domain has been configured will handle e-mail. The practice of having lower prioritized mail servers defined in your MX records is frequently referred to as having your mail servers "acting as a backup."  This type of setup is typically associated with larger ISPs, who have multiple mail servers all handling e-mail messages.

Here is an example of how 2 MX records may be defined by priority:

In the example above, the numbers 1st and 2nd represent priority. In DNS, a lower number represents a higher priority. Therefore, mailserver1.domain.com has a higher priority than mailserver2.domain.com. In this example mailserver1.domain.com will handle all incoming e-mails for the domain.com domain. If it is unable to do so, mailserver2.domain.com will handle all incoming e-mail instead. In this situation, we say that mailserver2.domain.com is acting as a backup to mailserver1.domain.com. In the raw zone file, the mailserver listed as first will get a lower MX record number than one listed second.

You can choose to switch the priorities of your mail servers simply by choosing the option in the drop-down menu.

For further information on making changes to zone files, go to How do I create, edit, or delete records using the Zone Manager?

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