To update your MX records with this Domain Name System (DNS) provider, it is important to first understand MX records and later learn how to configure them for cPanel in general.
So, what is an MX record?
An MX or Mail Exchange is a record used by mail servers to determine where to deliver email.
MX records must be used in conjunction with A records.
That MX record must point to the A record which points to the mail server’s IP address.
If an MX record is missing for the domain, then the mail for the domain will normally be attempted to be delivered to the matching A record.
So for the domain “$domain.com” if there were no MX records for “$domain.com” then the mail would be attempted to delivered to the apex/root record of “$domain.com”.
Each value for an MX record actually contains two values, priority and domain name: An integer that represents the priority for an email server.
If you specify only one server, the priority can be any integer between 0 and 65535.
If you specify multiple servers, the value that you specify for the priority indicates which email server you want to email to be routed to first, second, and so on.
The server with the lowest value for the priority takes precedence.
For example, if you have two email servers and you specify values of 10 and 20 for the priority, email always goes to the server with a priority of 10 unless it's unavailable.
If you specify values of 10 and 10, email is routed to the two servers approximately equally.
0 example.com
10 2ndmailserver.example.com
