You can set custom MX entry for your domain with cPanel. This is done to set mail server of your domain to a remote server.

1) Click on “MX Entry” under the Mail area in cPanel.

2) For MX Entry Choose the option “Automatically Detect Configuration” under email routing.

Click on the button “Change”  to save the settings.

3) Under Add New Record, set the priority for the new MX Entry (Lower values denote higher priority,0 is the highest priority).

Add  hostname of the new mail exchanger in the text box “Destination“.

Click “Add New Record” to store the changes.

4) Existing MX Entries are seen under ” MX Records“. You can edit or delete these MX entries.