Dns erroe - Event id 4007

[leobis]

Hi all
A few days ago in my vmware laboratory test I demote the last DC (Windows 2003 Enterprise) which had the following Dns namespace: mio.loc (stored in an integrated AD zone)

Once the demotion was completed,everything seemed had gone smooth; after restarting the server I promoted it as a new DC with a new dns namespace (mydom.loc).
After assuring that no errors were reported I launched the "Nltest" command line (with the option of /DSDEREGDNS so as to have the old SRV files removed and updated.
The "problem" is that whenever I start up the DC, in the DNS event I got the following error message:
EVENT ID 4007
Source: DNS
Category:None

Description:
The DNS server was unable to open zone _msdcs.mio.loc in the Active Directory from the application directory partition ForestDnsZones.mio.loc. This DNS server is configured to obtain and use information from the directory for this zone and is unable to load the zone without it. Check that the Active Directory is functioning properly and reload the zone. The event data is the error code.
Data bytes: 0000: 0d 00 00 00 ----

Honestly the server works fine, but I would like to solve the above problem.
Thanks in advance for your help.
Leonardo

Ps: in the above DC is installed Exchange 2003

 

[ricpinto]

You should have uninstalled the DNS when you demote everything. Now check if there's a zone mio.loc in the DNS snapin, delete everything that's related to it. You must have only mydom.loc on your forward/reverse zone. Then run netdiag/fix .