DNS zone 'dissappeared'
Posted on 2013-05-17
I had an issue where the DNS zone 'disappeared' from the network DNS and that change was replicated to all AD DNS servers.
I want to know if the two changes I made with regards to DNS would have done that.
HQDC01 & DC02 = Win2012
BRANCHDC01 = Win08R2
A branch DC/ DNS server was not replicating the netlogon folder, on HQDC01 I discovered that the branch DC was not replying to NetBIOS / FQDN pings but IP pings was fine. On the branch DC (connected to HQ via a firewall VPN) the DC could not ping itself either.
I check the DNS resource A record. That was fine. THE DC was in the Name server tabs. I added in a second IP on the server and added in an A record and that pinged okay, I removed the second IP and the record. IT had to be the A Record, So I deleted the A record of the Branch server and manually added it again. I pinged itself the NetBIOS replied okay but the FQDN replied with the wan IP of the site.
On the HQ servers the branch server now also replied with WAN IP on bother NETBIOS and FQDN names.
In the DNS manager on HQDC01 on the zone. I reloaded it, then went through the setting and saw that in the zone transfer tab it was unticked. I ticked it and selected to all in the named server tabs. I checked the other HQDC02 DNS server but when I clicked on the zone it would not expand and after a refresh of the console it was gone, then they same back on HQDC01. the branch server was fine. I stopped the DNS server and tried to copy the ..\\system32\dns folder in the fear that the missing zone with replicate to this server. IT did when I started the service again.
On the branch server the dns zone's .dns file was in the \dns folder but on the two HQ servers it was not. I copied the .dns folder to both their their \dns folder and recreated the zone and clicked on reload, but it did not repopulate. I then had to recreated some A host record of member servers and eventually it started to repopulate as Machines started to communicate with them.
QUESTION: Can the Removal of a DNS server's A host record do this or changing the Transfer Zone settings or both?