Unable to delete DNS Reverse Lookup Zone

I have a customer running SBS 2003, and whilst looking at somethign else, I noticed a problem with DNS.

In DNS management, I have an Active Directory-Integrated Primary reverse lookup zone called 0.168.192.in-addr.arpa

When I click on this zone name, the right hand window shows the following message:-

The DNS server encountered a problem while attempting to load the zone. The zone data may not be available in Active Directory, or the zone data is corrupt."

If I right click on the zone name and select properties, I can see that the status is Expired. I've changed the Dynamic updates to "Nonsecure and secure" (it was set to None). I cannot change the type or replication because "There was a server failure".

I enabled event logging on DNS, and now get lots of 4004, 4015 and 4521 errors in the DNS Event log.

I've opened ADSIEDIT, and drilling down through ForestDNSZones, I get to CN=MicrosoftDNS and in there, there are a couple of dnsZones which show as "InProgress":-

DC=..InProgress-4EA831165436DE8E-0.168.192.in-addr.arpa
DC=..InProgress-4EA83102543690DB-0.168.192.in-addr.arpa

There were 3 of these yesterday, which I deleted, but this morning, these 2 have appeared.

If I go into Active Directory Users and Computers, and drill down to System->MicrosoftDNS, I can see 0.168.192.in-addr.arpa with a yellow exclamation on it. If I right-click and choose to delete it, I get a warning asking me to confirm deletion. I choose Yes and get an error which says:-

The object 0.168.192.in-addr.arpa (or some of the objects it contains) cannot be deleted because: The directory service encountered an unknown failure."

I'm unsure where to go with this now...
LVL 17
Chris MillardAsked:
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Chris MillardConnect With a Mentor Author Commented:
I'm going to request that this question is closed. I've not been able to resolve the issue.
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Cris HannaCommented:
My first suggestion would be to download the sbs bpa (www.sbsbpa.com   select the sbs 2003 version)

Run it and correct everything it finds and see where you end it after that.
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Chris MillardAuthor Commented:
I've downloaded and run the BPA for SBS 2003. The only critical error was that the ClientApps shared folder path has changed.

I've also got a couple of non-critical issues, but nothing that should affect DNS.
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Chris MillardAuthor Commented:
I've also noticed another entry in ADSIEDIT this morning:-

DC=..InProgress-4EA919AF57C36E1C-0.168.192.in-addr.arpa
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Cris HannaCommented:
how many NICs in your server?
can you run IPCONFIG /all on the server and post the results?
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Chris MillardAuthor Commented:
I'll have to post the results on Monday now, as I'm finished for the weekend...
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Chris MillardAuthor Commented:
OK, I've posted the ipconfig results below. There are 2 NICs installed, but there is nothing on the 15.0.0.x network at all.

Windows IP Configuration

   Host Name . . . . . . . . . . . . : MYSRV
   Primary Dns Suffix  . . . . . . . : mydomain.local
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : mydomain.local

Ethernet adapter Network Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Client) #2
   Physical Address. . . . . . . . . : 00-18-8B-3B-BB-3C
   DHCP Enabled. . . . . . . . . . . : No
   IP Address. . . . . . . . . . . . : 15.0.0.1
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . :
   DNS Servers . . . . . . . . . . . : 192.168.0.67
   Primary WINS Server . . . . . . . : 192.168.0.67

Ethernet adapter Server Local Area Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Client)
   Physical Address. . . . . . . . . : 00-18-8B-3B-BB-3A
   DHCP Enabled. . . . . . . . . . . : No
   IP Address. . . . . . . . . . . . : 192.168.0.67
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.0.65
   DNS Servers . . . . . . . . . . . : 192.168.0.67
   Primary WINS Server . . . . . . . : 192.168.0.67
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Cris HannaCommented:
what if anything is the Nic with the 15.x.x.x address connected to?
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Chris MillardAuthor Commented:
Nothing at all
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Cris HannaCommented:
Then disable the NIC (right click > Disable)...and then reboot at your convenience and see what your results are then
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Chris MillardAuthor Commented:
Actually, upon further inspection, I cannot disable this NIC, as it actually is connected to a NAS box on the same IP range. Backup Exec is backing up to this NAS box...
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Cris HannaCommented:
Why isn't your NAS box on the same IP subnet as your LAN?
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Chris MillardAuthor Commented:
Because the amount of data being backed up to the NAS was slowing down the main network, it was put onto a separate NIC.
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Cris HannaCommented:
not sure how that address was selected as it's not a "private" IP Address but a public one on the internet.

I recognize it's behind a router so it probably not a problem
Do you have an entry in DNS for this IP?

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Chris MillardAuthor Commented:
Yes - it's one of the server entries...
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Cris HannaCommented:
Have you tried booting to safe mode to see if it will allow you to remove the record, then just boot back up in normal mode
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Chris MillardAuthor Commented:
It's not as simple as that - all of the work I do on this server is via an RDP session. Getting at the server is nigh on impossible
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Cris HannaCommented:
Don't suppose the server has an iDRAC card...well I'm afraid I don't have much more to offer on this case.
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Chris MillardAuthor Commented:
No solution has been found to this problem
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