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Having second thoughts about DNS Scavenging...should I or should I not?

Hi, I am having second thoughts about DNS scavenging...should I or should I not? I have been having issues with one of my zones off and on for about 6 months with A records sharing the same IP addresses and have manually deleted the old records by checking the DHCP server to verify the correct IP for the specific machines.

I have enabled DNS scavenging a couple weeks ago, but now am concerned that it may delete legit records.

So, do you use DNS scavenging? If not, how do you manage your DNS?

Just a bit concerned noob,

Bob

rsnellman

ASKER

Oh, forgot to mention, that one of my biggest concerns with scavenging, is I have records that were created manually and I am a bit afraid scavenging may delete them.

I have scavenging set:
No-refresh interval : 4 days
Refresh interval: 5 days

Any reassurance would be greatly appreciated.

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Brian Pierce

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rsnellman

ASKER

Ok, I may have just found my own answer...but I need a second opinion.

It looks like NS (Name Server) records are not included in the scavenging, also each A record has the "Delete this record when it becomes stale" and the "Record time stamp" date. So, if this box is checked then it is included in the auto scavenging process. Right?

So, if there are records in my zones that I do not want to be included in the auto scavenging process, I just make sure this box is unchecked?

rsnellman

ASKER

One more question...I have noticed that under the Name Servers tab of a NS record, I am showing a couple of servers that are no longer running DNS Servers, but I have just enabled auto scavenging a couple of weeks ago, so is it possible that scavenging will remove these for me or do I have to delete these NS records manually?

Sorry if I may be asking the same question, but I am just wanting to make sure I understand this process.

rsnellman

ASKER

So, does this auto scavening only apply to dynamic DNS entries? I have noticed that it seems that the dynamic DNS entries have the "Delete this record when it becomes stale" checked and the manual DNS entries (that I am sure where created manually) do not have that option checked. Is this correct or am on in left field again?

Thanks.

rsnellman

ASKER

I know, I am being a pest, sorry...I was wondering what happens when say, I have a backup machine that I do not have on all the time and the auto scavenging tries to verify this machine still exists and then decides it doesn't and deletes the record? The next time I turn on the backup machine, it will just re-register and grab or create a new record and go on about its business?

Thanks again.

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Chris Dent

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rsnellman

ASKER

Thanks for the reassurance. You all are the best.

Have a wonderful day.

Bob