About external DNS servers

An external DNS server is any server running an implementation of the DNS protocol. The implementation can be BIND, Microsoft DNS, or any other implementation of the DNS protocol.

You can configure external DNS servers to act as the master or slave name servers for domains hosted on Ensim Pro. When you configure external DNS servers as the master or slave name servers, Ensim Pro cannot modify its local copy of the DNS zone because the DNS standard only allows the master's copy of a zone to be updated. Therefore, the Ensim Pro server attempts to contact the external master name server to add the required DNS records within a zone. Make sure you have added the external server to Ensim Pro, otherwise the Ensim Pro server will be unable to contact the external server.