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Reveser DNS Lookup nslookup

Posted on 2010-09-17
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Last Modified: 2012-05-10
I was trying to do a reverse dns lookup for one of our Windows 7 machines and it fails.  The nslookup with the host name works without a problem.  I looked at DNs and see that their is no entry in the reverse lookup zone for our windows 7 clients.  Why is this?  The DNS A record has the option to update the asocaited ptr record selected.  I tried removing it form DNS and running an ipconfig /regiosterdns form the Windows 7 workstation with the same results.  Is there a way to resolve this so reverse dns lookups work?
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Question by:georgedschneider
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10 Comments
 
LVL 2

Expert Comment

by:UserProto
ID: 33703136
Do you use domain and users are domain users and workstation are registered in domain? If not, it maybe isue that is allowed only secure dynamic updates - try change properties for subnet in zone.
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Author Comment

by:georgedschneider
ID: 33703439
Yes we are in a domian enviroment.
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LVL 2

Expert Comment

by:UserProto
ID: 33703497
Also check available updates for windows 2003 server and windows 7 - it is some important compatibility updates
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Author Comment

by:georgedschneider
ID: 33705144
Any idea what update might be related to the DNS issue?
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LVL 2

Expert Comment

by:UserProto
ID: 33705440
I check windows7 workstation -  I enabled "use this connection's DNS suffix in DNS registration" in windows7 and vista adapters TCP/IP advanced settings - maybe it is the solution for updating DNS.

I installed newest service packs and latest updates to my windows 2003 std and SBS 2003 Premium servers, Vista and Windows 7 workstations and have no problems with servers and workstations (winxp pro and home, vista buss and windows 7 - Office 2003, Office 2007, Exchange 2003).

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LVL 2

Expert Comment

by:UserProto
ID: 33705495
Also I set my DHCP server (DNS tab):
"Always dynamically update DNS A and PTR records" and "Dynamically update DNS A and PTR records for DHCP clients that do not request updates".
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Author Comment

by:georgedschneider
ID: 33735456
I have the following set in my DNS tab on by DHCP server:

Enable DNS Dynamic Updates according to the settings below:
Always dynamicaly update DNA A and PTR Records

-Discard A and PTR Records when lease is deleted

-Dynamicaly update DNA A and PTR Recordsfor DHCP clientsthat do not request updates (for examplr clients running NT 4.0).

Still with no luck.
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LVL 2

Assisted Solution

by:UserProto
UserProto earned 2000 total points
ID: 33735485
And what about it: enabled "use this connection's DNS suffix in DNS registration" in windows7 and vista adapters TCP/IP advanced settings - maybe it is the solution for updating DNS ?
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Author Comment

by:georgedschneider
ID: 33735727
Yes that solved the problem.  However how can I have this enabled without having to go around ot manualy change this on every depl;oyed client?  Is the an GPO for this perhaps?
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Accepted Solution

by:
georgedschneider earned 0 total points
ID: 33735938
Applying the policy under DNS in computer configuration for "register dns records with coonection specific dns suffix" for the default domain GPO resolved the issue.
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