Resource records store information about specific network computers, such as their names, Internet Protocol (IP) addresses, and services that the computers provide. In most cases, Windows-based computers update their own resource records on DNS servers (using DNS dynamic update protocol, also known as dynamic DNS), eliminating the need for an administrator to manage them.
However, if your network contains non-Windows-based computers or computers that you want to designate for handling e-mail, you might need to add the following resource records to the zone on your DNS server for these computers:
- Host address (A). Maps a computer's DNS domain name to the computer's IP address.
- Mail Exchanger (MX). Maps a DNS domain name to the name of a computer that exchanges or forwards e-mail.
Note
When the Active Directory Installation Wizard installs and configures DNS on the new domain controller, it creates resource records that are necessary for the proper operation of the DNS server on the domain controller. Do not remove or change these resource records. Change or remove only those resource records that you have added yourself.
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