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The command you performed is showing the SRV records of your domain controllers<br />
<br />
You can follow these article's to remove the metadata from an AD controller that no longer exists<br />
<br />
<a href="https://technet.microsoft.com/en-us/library/cc816907(WS.10).aspx" rel="ugc">https://technet.microsoft.com/en-us/library/cc816907(WS.10).aspx</a><br />
<br />
<a href="http://support.microsoft.com/kb/216498/en-us" rel="ugc">http://support.microsoft.com/kb/216498/en-us</a>
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The command you performed is showing the SRV records of your domain controllers

You can follow these article's to remove the metadata from an AD controller that no longer exists

https://technet.microsoft.com/en-us/library/cc816907(WS.10).aspx [https://technet.microsoft.com/en-us/library/cc816907(WS.10).aspx]

http://support.microsoft.com/kb/216498/en-us [http://support.microsoft.com/kb/216498/en-us]

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<a href="https://filedb.experts-exchange.com/incoming/2015/08_w35/932174/ce.jpg" target="_blank" title="ce.jpg (56 KB)"><img alt="ce.jpg" class="file-block lazyload" style="max-width: 681px;" data-src="https://filedb.experts-exchange.com/incoming/2015/08_w35/932174/ce.jpg" /></a><br />
As you can see after the command nslookup-Domane.local <br />
Somebody has installed three dc servers <br />
0.0.0.0 192.168.16.1. 192.168.21.182<br />
How to erase them correctly ? ? <br />
There is no access to these servers<br />
So I can not work with DCpromo<br />
thnks din !<br />
<a href="https://filedb.experts-exchange.com/incoming/2015/08_w35/932173/ce.jpg" target="_blank" class="file-inline" title="ce.jpg (56 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>ce.jpg</a>
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ce.jpg



As you can see after the command nslookup-Domane.local 
Somebody has installed three dc servers 
0.0.0.0 192.168.16.1. 192.168.21.182
How to erase them correctly ? ? 
There is no access to these servers
So I can not work with DCpromo
thnks din !

how to delete active directory

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.