A sample dnsinfo.C file which is placed in the conf directory on a 4.1 manager when using secure client and secure domain login. Once this file is created push the policy again and update the topology on the client making sure an lmhosts file already exist in c:\winnt\system32\drivers\etc\. You should now see the entries for the PDC and BDC.

(
     :dns_servers (
          : (dns_server1
               :obj (
                    : (10.10.1.100)
               )
               :topology (
                    : (
                         :ipaddr (10.10.1.0)
                         :ipmask (255.255.255.0)
                    )
                )
                :domain (
                    : (
                           :dns_label_count (10)
                           :domain (.my_domain.com)
                    )
              )
        )
)
:encrypt_dns (true)
:LMdata (
           : (
                :ipaddr (10.10.10.1)
                :name (pdc1)
                :domain (my_domain)
              )
           : (
                :ipaddr (10.10.10.2)
                :name (bdc1)
                :domain (my-domian)
             )
      )
)