An MX-record (Mail eXchange-record) is a type of resource record in the Domain Name System (DNS). This is the system that, among other indicates to what specific IP address emails need to be sent.
The MX-record contains the host name of the computer(s) that handle the emails for a domain and a prioritization code. Emails are routed through to the IP address which is set in the A-record of the host.
The A-record (or address-record) determines which IP address belongs to a domain name. This record 'translates' the domain name to an IP address.
The mail server is called mx1.emailforward.mx and mx2.emailforward.mx, this can be used in the MX-record.
Example of an MX-record:
- Domain: yourdomain.com
- Mail exchanger: mx1.emailforward.mx
- Priority: 10
- Mail exchanger: mx2.emailforward.mx
- Priority: 20
All emails sent to firstname.lastname@example.org, will be sent to the mail server mx1.emailforward.mx or mx2.emailforward.mx and handled per configuration (forward / catch-all / blackhole)