// Specify the subnets

acl ourclients {
   10.0.0.0/24;
   10.1.1.0/24;
   192.168.10.0/24;
   192.168.20.0/24;
   192.168.30.0/24;
   192.168.40.0/24;
   172.16.0.0/24;
   172.16.50.0/24;
   localhost;
   localnets;
};

options {
   directory "/var/cache/bind";

// Allow recursion
   recursion yes;

   allow-query {
      ourclients;
   };

// Specify forwarders
   forwarders {
      8.8.8.8;
      8.8.4.4;
   };

// Do not allow to resolve requtest by DNS server itself
   forward only;

   dnssec-enable yes;
   dnssec-validation yes;

   auth-nxdomain no;    # conform to RFC1035
   listen-on-v6 { any; };

   //Allow queries
    querylog yes;
};

// Logging

logging {
   channel query_log {
      file "/var/log/named/bind.log" versions 3 size 5m;
      severity info;
      print-time yes;
      print-severity yes;
      print-category yes;
   };
  category queries {
      query_log;
  };
};