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I believe if you go to the connections properties, in advanced, in the DNS tap, select Append these DNS suffixes (and enter yours) and select Use this Connections DNS suffix in DNS registration.
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But the DNS suffix isn't the issue here.<br />
<br />
The issue is, two A records are appearing for the same name, but for two different IPs.<br />
<br />
I create the A record that points Machine2.domain.com to 10.1.4.2<br />
<br />
But the machine itself is registering with DNS, with the same name, but pointed to 10.1.4.1 instead of 10.1.4.2, creating multiple A records for the same domain name, with different IPs.<br />
<br />
The DNS suffix for both domain names is domain.com, the issue is merely the IP address listed in the A record.<br />
<br />
I think I'm missing something here...
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The only way is to uncheck register this interface with DNS
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While this solution does not deal with the root cause of the error, it is an exceptional workaround with the exact same desired results.
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<div class="content wysiwyg-content">
I have a Server 2008R2 machine running a couple of SharePoint sites via IIS. Each site has it's own IP, each IP is assigned to a separate physical NIC on the machine. Each site has it's own A record in DNS.<br />
<br />
The problem is, every day or two, a second A record appears for one of the site's IPs, pointing it to the wrong FQDN.<br />
<br />
Example:<br />
<br />
A Records exist for:<br />
<br />
Machine1.domain.com - 10.1.4.1<br />
Machine2.domain.com - 10.1.4.2<br />
<br />
Every day or two, a second A record appears for:<br />
<br />
Machine2.domain.com - 10.1.4.1<br />
<br />
This new, erroneous A record does not REPLACE the original record for Machine2.domain.com, but rather, it co-exists with it, causing resolution issues.<br />
<br />
I don't think I want to disable dynamic DNS on the Domain Controllers, but I need this second A record to stop appearing!<br />
<br />
Any ideas?
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</div>


I have a Server 2008R2 machine running a couple of SharePoint sites via IIS. Each site has it's own IP, each IP is assigned to a separate physical NIC on the machine. Each site has it's own A record in DNS.

The problem is, every day or two, a second A record appears for one of the site's IPs, pointing it to the wrong FQDN.

Example:

A Records exist for:

Machine1.domain.com - 10.1.4.1
Machine2.domain.com - 10.1.4.2

Every day or two, a second A record appears for:

Machine2.domain.com - 10.1.4.1

This new, erroneous A record does not REPLACE the original record for Machine2.domain.com, but rather, it co-exists with it, causing resolution issues.

I don't think I want to disable dynamic DNS on the Domain Controllers, but I need this second A record to stop appearing!

Any ideas?

Incorrect DNS A records appearing on Domain Controllers

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.

Windows Server 2008

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).