Major DNS problem

lrollins
lrollins used Ask the Experts™
on
I desperately need help.  I had to shut down my server yesterday to replace a battery backup and now it seems that the dns isn't working.  I have no idea why.  I haven't made any changes to this server.  All I did was shut it down.  I can ping from a client using the IP address but not the name.  Any ideas?
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Commented:
Have you checked the logs for any errors?
Top Expert 2004

Commented:
>>> now it seems that the dns isn't working

What gives you that impression?
lrollinsIT Manager

Author

Commented:
Because on one of my other servers I'm running sqlserver and I was having connections problems.  It was because I had name of the server in the sql.ini (which it's been that way for years) and now I've had to put the ip address in there instead.
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lrollinsIT Manager

Author

Commented:
I got an event id of 5781 - dns server not available
What was running on the server you shut down?  What was its function?
lrollinsIT Manager

Author

Commented:
It's running W2K server and it's for data storage.  It's the PDC and handles the DHCP, WINS, DNS.
Top Expert 2004
Commented:
That sounds reasonable.  Now to troubleshoot why...

1) Can you ping the PDC from the MSSQL box using the IP?
2) Is the DNS service up and running on the PDC?
3) If you run a DNS query test locally on the PDC, does it pass?
4) Have you verified the integrity of your DNS zones on the PDC?

DNS is integral to AD.  Without it, you'll find a number of things that don't work as advertised.  Also, pay special attention to the event logs on the PDC.  They will usually tell you when something is wrong with your services.
Top Expert 2004

Commented:
When you shut down the PDC for the hardware replacement, did you shut it down normally?
Top Expert 2004

Commented:
Could you elaborate on the resolution?

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