The Domain Name System (DNS) is a complicated solution that links domain names to their IP addresses. The purpose is to make it easier for people. We remember names that we can easily write and keep in our memory and get to sites, that we need to know their location on the network – their IP addresses.
The DNS works with text commands that computers understand. These commands are called DNS records, and they are saved on DNS nameservers. In our case, we will explore the MX record and what other types of records you will need with it for a functional mail server.