Configuring and Enabling DNS Recursion

To configure DNS recursion in DDI Central Linux DNS Bind servers:

• Go to DNS>Config>DNS Options
• Select the following options in the Option dropdown menu

• forwarders: Specifies the IP address(es) of servers that forwards the queries to the external DNS servers.

  The forwarders value must be the IP address of the forwarder server.

• allow-query-cache: Specifies which hosts based on the address match list may receive query answers from the server's cache. If not specified this option defaults to the address match list specified in the allow-recursion option; if this is not set then that set in the allow-query option is used; otherwise this option defaults to {localnets; localhosts;}.

  We advice you to provide the value for allow-query-cache as {any;}.

• recursion:Turns recursion on or off. If set to yes the server will perform recursion to obtain the answer for the client; if no the server will attempt to give an authoritative answer cached information or a referral to another name server.

  The recursion value must be given as yes.