In order to integrate with the Oxford University DNS, it is required that six subdomains be delegated to each unit DNS server. These subdomains are as follows (the final two do not apply to Windows 2000-only domains):
The delegations will be made to one or more servers within your own unit. Server delegations should be registered via the Hydra IPAM ADSRV record template.
Refer to the instructions on Installing and Configuring Windows DNS to Support Active Directory together with the Active Directory pages for further information and full details of configuring DNS to support both configurations.
The zones listed above are public zones and so in theory your Active Directory authoritative server should be able to be contacted on UDP/TCP 53 from anywhere in the world. In practice however, you may want to restrict it to the Oxford subnets, either on the servers themselves or via a firewall.
If however, you wish to restrict it further to just the Oxford resolvers (126.96.36.199, 188.8.131.52, 184.108.40.206), then you will need to open up your firewall to their recursive source IPs. These IPs are on the subnet range 220.127.116.11/29.
By default PCs running Windows 2000 and above (both workstation and server products) will try to register their name and IP address in the DNS each time that they boot up. To minimise the extra load that this will cause on the Oxford DNS servers, we'd be grateful if you would turn this option off when you install Windows XP, Vista etc. Never disable this setting on domain controllers as this will also stop them registering their service records.
To disable automatic registration after Windows has been installed, open the [Network] control panel, bring up the [Properties] box for the Local Area Connection, open the [Properties] for TCP/IP, go to [Advanced/DNS] and turn off the option [Register this connection's addresses in DNS]. You can also disable registration during a custom install of XP by going into the [Properties] of TCP/IP at the appropriate point in the installation process.