Red Hat

 # File: /etc/named.conf

  logging {
              channel query.log {
                          file "/tmp/dnslog";
                                  // Set the severity to dynamic to see all the
                                  // debug messages.
                                  severity debug;
                                  print-time yes;
                                  print-severity yes;
                                  print-category yes;
                                      };

              category default { query.log; };
              category network { query.log; };
              category queries { query.log; };
              category general { query.log; };
              category database { query.log; };
              category security { query.log; };
              category config { query.log; };
              category resolver { query.log; };
              category xfer-in { query.log; };
              category xfer-out { query.log; };
              category notify { query.log; };
              category client { query.log; };
              category unmatched { query.log; };
              category update { query.log; };
              category dispatch { query.log; };
              category dnssec { query.log; };
              category lame-servers { query.log; };

  };

  options {
      listen-on port 53 { 127.0.0.1; };
  };

options {
      forwarders { 10.4.4.10; 172.22.20.14; 172.22.15.51; };
      forward only;
  };