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DHCP is not dynamically updating DNS

amerretz
amerretz asked
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Last Modified: 2012-05-09
Hi,

I have a Windows Server 2008 R2 domain controller. Active directory integrated DNS is installed along with DHCP on the DC. I have configured the following on the dhcp server properties;

In the dhcp console if I right click on IPV4 and select properties > dns tab

- 'Enable DNS Dynamic updates according to the settings below' is ticked

- 'Always dynamically update DNS A and PTR records' is selected

- 'Discard A and PTR records when lease is deleted' is ticked

In the advanced tab > credentials button:

- I have entered in the credentials of a domain admin user account, this domain admin account is a member of the 'DnsUpdateProxy' security group in active directory.

On the DHCP scope > properties > dns tab:

- 'Enable DNS Dynamic updates according to the settings below' is ticked

- 'Always dynamically update DNS A and PTR records' is selected

- 'Discard A and PTR records when lease is deleted' is ticked

On the DNS server I have configured a reverse lookup zone for the subnet which the DHCP scope issues ip addresses.

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When a client connects to network a ip address is correctly issued and also appears as a lease on the DHCP server. If I look at the DNS console I do not have an entry appear in the forward zone for the host. There is no entry in the reverse zone for the ip address either.

I have checked the server event log and the log file for DHCP and cannot find any errors.

On the client, if I open a command propmt and type 'ipconfig /registerdns' I now have a DNS entry within the forward zone. However, I do not have a entry in the reverse lookup zone.

Can someone please help me troubleshoot why DHCP is not updating DNS correctly.

Thank you.
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