The main purpose of a Domain Name System (DNS) server is to translate domain names to IP addresses, and vice versa. A DNS server is also used to determine the mail server for a given domain name.
Of course, you can use an external DNS server. But if you want a DNS server to be managed via CloudBlue Commerce, you need to install your own DNS server. This section explains how to deploy DNS hosting on a Linux server, and to provide it with CloudBlue Commerce support.
It is strongly recommended that DNS servers be placed on different hardware nodes. You need at least two DNS servers each one installed on a computer that meets these requirements.