How do I update my MX Records?

Step 1 - Login to your cPanel account.
Step 2 - Navigate to 'Email' and click 'MX Entry'.
Step 3 - Under 'Email Routing' select the relevant option. 
Step 4 - Under 'Add New Record' enter your new MX Record (you will need to individually add each record).
Step 5 - To edit/delete a record scroll down to 'MX Records' and locate the record you would like  to edit/delete.