MX Record

Mail Exchange Records, or MX Records, tell mail servers where to deliver mail. Tee name field of an MX record contains the host name which appears in the email address, and the data field contains the host name of the server to which the mail should be delivered. For example:

Name - dnsuniversity.com
This means that mail sent to user@dnsuniversity.com is directed to the mail exchangers defined by these records.

TTL - 1800
Indicates how long this record will be cached by the resolving name server.

MX Level - 10
This sets the preference for the MX record. The lower the number, the higher the preference. If the mail server with the highest preference is inaccessible, the mail will be delivered to the mail server next in preference.

Data (A Record) - mail.dnsmadeeasy.com
The host names which will have mail delivered to them for the domain. It's important to realize that this value is never a CNAME value. This value should primarily be an A record but could use an IP.