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Really seems like scavenging is not setup properly.
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Really seems like scavenging is not setup properly.

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<br />
You have enabled automatic Scavenging haven't you? DNS Console / Server Properties / Advanced.<br />
<br />
The zone you have in the screenshot above shows that it's next elligible for Scavenging either on 1st September. If Scavenging had run that value would have updated.<br />
<br />
Feel free to run Scavenging manually (right click on the Server, Start Scavenging), then check your Event Log for the scavenging report.<br />
<br />
Chris
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You have enabled automatic Scavenging haven't you? DNS Console / Server Properties / Advanced.

The zone you have in the screenshot above shows that it's next elligible for Scavenging either on 1st September. If Scavenging had run that value would have updated.

Feel free to run Scavenging manually (right click on the Server, Start Scavenging), then check your Event Log for the scavenging report.

Chris

<div>
One of the links posted contained the answer.
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One of the links posted contained the answer.

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<div class="content wysiwyg-content">
We're having a bit of an issue with DNS scavenging and accurate entries in the forward lookup zone.<br />
<br />
Domain: &nbsp;Server 2008 R2 (Forest and Domain)<br />
Scavenging: &nbsp;Enabled (7 days / 7 days)<br />
Dynamic Updates: &nbsp;Enabled on DHCP server / No GPO pushing it out, default should automatically do it<br />
<br />
We're seeing a lot of issues with dns records as far back as February of this year. &nbsp;Some machines are part of our domain, others aren't (personal PCs, Blackberry devices, iPhones, etc.) &nbsp;We also see multiple entries in forward and reverse zones.<br />
<br />
Any ideas?<br />
<a href="https://filedb.experts-exchange.com/incoming/2010/09_w39/350051/Multiple-DNS-Entries---Same-IP.PNG" target="_blank" class="file-inline" title="Multiple DNS Entries in Forward Lookup Zone (2 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>Multiple-DNS-Entries---Same-IP.PNG</a><br />
<a href="https://filedb.experts-exchange.com/incoming/2010/09_w39/350052/Reverse-Lookup-Zone.PNG" target="_blank" class="file-inline" title="Reverse Lookup Zone (3 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>Reverse-Lookup-Zone.PNG</a><br />
<a href="https://filedb.experts-exchange.com/incoming/2010/09_w39/350053/Scavenging.PNG" target="_blank" class="file-inline" title="Scavenging Enabled (27 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>Scavenging.PNG</a><br />
<a href="https://filedb.experts-exchange.com/incoming/2010/09_w39/350054/Scope---Dynamic-Updates.PNG" target="_blank" class="file-inline" title="DHCP Scope - Dynamic Updates Enabled (15 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>Scope---Dynamic-Updates.PNG</a>
</div>
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Multiple DNS Entries in Forward Lookup Zone

Multiple-DNS-Entries---Same-IP.PNG

Reverse-Lookup-Zone.PNG

Scavenging.PNG

Scope---Dynamic-Updates.PNG

We're having a bit of an issue with DNS scavenging and accurate entries in the forward lookup zone.

Domain:  Server 2008 R2 (Forest and Domain)
Scavenging:  Enabled (7 days / 7 days)
Dynamic Updates:  Enabled on DHCP server / No GPO pushing it out, default should automatically do it

We're seeing a lot of issues with dns records as far back as February of this year.  Some machines are part of our domain, others aren't (personal PCs, Blackberry devices, iPhones, etc.)  We also see multiple entries in forward and reverse zones.

Any ideas?

DNS Scavenging Issues

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.

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