Can't join NT machine to domain

[chunky28]

I recently reconfigured my network after purchasing a CheckPoint firewall.

This involved changing all IP addresses to a private range (192.168.2.1-192.168.2.14)

However since changing this I have managed to join every PC to the domain except for one NT machine.

When I attempt to join it I just get the message:

"The domain controller for this domain cannot be located"

- I have successfully joined another NT machine to the domain.
- The gateway, subnet mask is correct.
- All PC's use identical hosts file
This is the contents of the hosts files. mailgate is the dc and webserver is the NT machine I am having problems with:
127.0.0.1 localhost
192.168.2.12 oracledatabaseconsulting.com

http://www.oracledatabaseconsulting.com

webserver.datachase.local webserver
192.168.2.9 mailgate.datachase.local mailgate
192.168.2.10 infrastructure.datachase.local infrastructure
192.168.2.11 ocsmid.datachase.local ocsmid
192.168.2.13 9iserver.datachase.local 9iserver
192.168.1.1 firewallint.datachase.local firewallint
193.195.xxx.xxx firewallext.datachase.local firewallext
- I can ping the domain controller from the NT machine
- I can run tracert mailgate (2000 server machine and dc) from the NT machine successfully.
- The dns server has an entry for the NT machine with the correct IP address
- I have added the NT machine to Active Directory Users and Computers


Any ideas what the problem could be? Anyone?

Thanks

Charlie

 

[knight4713]

On the NT4 machine, can you ping the FULL domain name of the DC?
dc.domain.com or whatever?

pinging by ip or hostname doesn't test the full requirements joining a domain requires. You NEED to have successful dns resolution for the domain.

I've had a similar problem. I could ping the name and ip but couldn't register with dns. I had a dns resolution problem. Your nt4 machine might not be getting dns resolution.

 

[jaksen112]

what if you added pre-loads to the host file, assuming 9iserver is GC DC

192.168.2.13 9iserver.datachase.local 9iserver #PRE #DOM:yourdomname

then nbtstat -RR
then nbtstat -R

and add to domain.


01110000