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DNS reverse lookup not updating automatically

Posted on 2012-08-29
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Last Modified: 2012-08-29
I am running windows server 2003 and DNS and I noticied that I have a lot of OLD stale records in my reverse lookup zone in my DNS server.

How do I fix this?   I can delete all of them, but that doesn't fix it, as I deleted some manually a while ago.  Is there a setting in DNS somewhere to automatically update the reverse DNS pointers when a PC changes it's IP address?
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Question by:afacts
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xDUCKx earned 2000 total points
ID: 38347208
Ensure that Dynamic Updates are available on the reverse lookup zone.  You can set a scavenging cycle with the "Aging" button on the general tab to clean up old records. (7 to 14 days is usually good).
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by:afacts
ID: 38347241
got it, so you're saying just check the box "scavenge stale resource records"
Also, on the
no-refresh interval
refresh interval
They both say 7 days
Should I need to change anything?
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Author Comment

by:afacts
ID: 38347243
Maybe I should make it 1 day, as my DHCP lease is set to 1 day?
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Expert Comment

by:xDUCKx
ID: 38347368
Yes, you could.  I wouldn't do the scavenging on your primary domain (Ie domain.local) as if you have static entries (which everyone does for printers, routers, switches, etc) these will get scrubbed.  The reverse lookup zone is pretty safe to scrub.
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Author Closing Comment

by:afacts
ID: 38347436
thanks
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