How to setup SmarterMail as a backup MX server?

Suppose your primary mail server goes down at that time your users are unable to receive incoming emails. You can set up SmarterMail as a backup MX server to continue to receive each emails in case your primary mail server goes down. When your primary mail server is down, email server deliver your emails to the backup MX server and when your server gets accessible, the backup MX server sends that all the emails which are held by it in spool.

Following steps will help you to set up SmarterMail as a Backup MX Server:

  1. Login to your SmarterMail via admin user.

    SmarterMail Login Page

  2. Go to Settings → Routing → Incoming Gateways.

    Go to Settings and Select Incoming Gateways Option

  3. Click on New.

    Add New Incoming Gateway

  4. From Option tab select Backup MX from the Gateway Mode

  5. Enter the IP address of the primary mail server.

    Select Backup MX Server and Specify IP Address

  6. Click on Spam tab and modify the spam action settings as per your requirements.

  7. Click on Save button to apply changes.

    Save Incoming Gateways Settings

  8. Click on General Settings from the left pane.

  9. Click on the Spool tab.

    Go to General Settings and Click on Spool Tab

  10. Change value of Retry Interval field to 10,10,10,1440.

  11. Click on Save button to apply changes.

    Set Scpool Retry Interval

  12. Now open your DNS server and add secondary MX record that points to the new servers IP address. Set the preference value higher than the main MX record.

If you do not know how to change MX record, please refer following article: How to add/edit the MX record for a domain



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