Using the Ensim Pro DNS server as a forward name server
If the name servers for your domains are hosted by an external ICANN-Accredited Registrar, such as Go Daddy, you need to specify the name servers of your service provider as the master and slave server respectively, for example ns1.godaddy.net and ns2.godaddy.net. In this scenario, the Ensim Pro server acts as a forward server.
The zones for the domains on the Ensim Pro server reside on the Registrar's servers. You need not create a DNS zone for the domains on the Ensim Pro server. Ensim Pro merely creates a forward zone for the hosted domain customerdomain.com. Any look up requests for the domain are forwarded in a round-robin pattern to the master server and slave servers.
Important: Before you create the site, make sure that the zone for the domain customerdomain.com is hosted on the external server ns1.godaddy.com. If the zone does not exist at the time of site creation, Ensim Pro will not be able to add the required records inside the zone. Also note that Ensim Pro will not attempt to contact the external servers ns1.godaddy.com and ns2.godaddy.net for creating any records unless the servers are added as external DNS servers.
Assuming that the zone for the domain myfirstcustomer.com resides on the external master and slave servers ns1.godaddy.net and ns2.godaddy.net respectively, perform the following steps:
In the shortcuts section of the Home page, click Add IP-based Site or Add Name-based Site (Sites section).
On the Add Site form, click Advanced.
In the Master Name Server field (DNS section), enter the host name of the external server ns1.godaddy.net.
Note: The external server can be any server running an implementation of the DNS protocol.
In the Slave Name Server field (DNS section), enter the host name of the slave name server ns2.godaddy.net.
Complete the Add Site form and click Add Site.
Ensim Pro automatically creates the forward zone myfirstcustomer.com for the domain. To verify, click Zones (DNS) in the shortcuts section of the Home page.
Note: Ensim Pro will not be the authoritative name server for this zone, rather it will forward all lookup requests to ns1.godaddy.com and ns2.godaddy.com. The master server ns1.godaddy.com must be pre-configured to allow updates from the Ensim Pro server s1.isp.net. Also, note that if ns1.godaddy.com is listed as an external server in the External Server List at the time of creating the domain, Ensim Pro attempts to contact ns1.godaddy.com and add records to the myfirstcustomer.com zone on the server.