Web interfaces to e-mail servers are an instance of this need. You should restart the DNS service after you make this change.Ī common problem faced by many organizations is the need to host sites behind the firewall or in the DMZ that are also behind NAT IP addresses. #How to register windows 2003 server windowsThese tools are located in the Support Tools folder on the Windows Server 2003 CD and can be installed by running the suptools.msi installation program located there. Dnscmd.exe is a part of the Windows Server 2003 Support Tools. ![]() To disable this capability, type dnscmd /Config /EnableEDnsProbes 0 at the command prompt. It will drop back to using the RFC 1035 defined limits. Disabling EDNS results in your server never advertising that it has the capability to handle DNS packets in excess of 512 bytes. As you can imagine, this will result in significant problems with DNS servers on opposite sides of the firewall!ĮDNS can be turned off in Windows Server 2003. Unfortunately, some firewalls have trouble with this enhancement as they are configured to drop DNS packets in excess of 512 bytes. When Windows Server 2003 contacts a remote DNS server, this capability is negotiated and enabled if both ends support it, resulting in DNS record sets of a size greater than 512 bytes. These extensions allow for the transfer of DNS packets in excess of 512 bytes, which was the restriction imposed by RFC 1035. New in Windows Server 2003 is support for Extension Mechanisms for DNS (EDNS) as defined in RFC 2671. Here are some problems that you might encounter with the Windows 2003 DNS service and the steps that you need to take to correct them. Even though it’s a well known and well understood service, Windows Server 2003’s DNS implementation can still create headaches for the administrator that needs to maintain it. Windows Server 2003’s DNS service is integral to the proper functioning of Active Directory and the proper functioning of the network. ![]() Here are some things you can do to troubleshoot DNS. If DNS isn't working properly, chances are, neither is your network. Troubleshooting DNS problems in Windows Server 2003ĭNS is a vital service in a Windows Server 2003 environment.
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