Question : DHCP not updating DNS Reverse lookup zones

Hi,
I have two 2003 Domain Controllers with DNS running on both and DHCP running on one DC.  The DHCP is setup with seperate VLANS with 10.10.10.x, 10.10.50.x, 10.10.70.x setup to hand out addresses to client workstations.  All three VLANS are updating the DNS Forward lookup zone and the zones are updating between the DCs, however only 10.10.10.x IP addresses are updating in the Reverse Zone.  Do I need to have seperate Reverse lookup zones for 10.10.50.x and 10.10.70.x for Reverse lookups to be updated?  
Thanks in advance.

Answer : DHCP not updating DNS Reverse lookup zones

You need reverse zones for each subnet for it to work.  I find it best to define a class b for the reverse zone and then it will dynamically create a new subzone for each different subnet.  This requires a lot less maintenance when you define new subnets.  It just works.

i.e.  Reverse zone: 10.10.in-addr.arpa