I have a domain with 3 DCs. One is starting to fail so I brought up a new one. All are running Win 2003.

Problem: there appear to be replication issues between the 4 machines but I can't figure out what's causing this. All are registered with the DNS as identically as I can make them.

How do I know there is a problem? Nagios is telling me that the other 3 DCs are having KCCEvent errors and the new machine is reporting "failed connectivity" errors.

Doing dcdiag on the new machine reports: the host could not be resolved to an IP address. This seems crazy as I log into it using the DNS name. I can ping it from the other three machines using this DNS name as well.

repadmin /showreps from the new machine says its seeing the other 3 machines. Doing the same from one of the older machines doesn't show the new machine.

I've tried netdiag /repair numerous times. No luck.

There are no firewalls running on any of the machines.

If I look at Domain info via MMC (on the new machine) it appears that all the information is current. Users, computers, DCs.. its all there.

Im puzzled as to what step(s) I've missed in adding this new machine. Suggestions?

EDIT: dcdiag from non-working:

C:\Documents and Settings\Administrator.BME>dcdiag

Domain Controller Diagnosis

Performing initial setup:
   Done gathering initial info.

Doing initial required tests

   Testing server: Default-First-Site-Name\YELLOW
      Starting test: Connectivity
         The host 312ce6ea-7909-4e15-aff6-45c3d1d9a0d9._msdcs.server.edu could
 not be resolved to an
         IP address.  Check the DNS server, DHCP, server name, etc
         Although the Guid DNS name
         (312ce6ea-7909-4e15-aff6-45c3d1d9a0d9._msdcs.server.edu) couldn't be
         resolved, the server name (yellow.server.edu) resolved to the IP
         address (10.127.24.79) and was pingable.  Check that the IP address is
         registered correctly with the DNS server.
         ......................... YELLOW failed test Connectivity

Doing primary tests

   Testing server: Default-First-Site-Name\YELLOW
      Skipping all tests, because server YELLOW is
      not responding to directory service requests

   Running partition tests on : Schema
      Starting test: CrossRefValidation
         ......................... Schema passed test CrossRefValidation
      Starting test: CheckSDRefDom
         ......................... Schema passed test CheckSDRefDom

   Running partition tests on : Configuration
      Starting test: CrossRefValidation
         ......................... Configuration passed test CrossRefValidation
      Starting test: CheckSDRefDom
         ......................... Configuration passed test CheckSDRefDom

   Running partition tests on : bme
      Starting test: CrossRefValidation
         ......................... bme passed test CrossRefValidation
      Starting test: CheckSDRefDom
         ......................... bme passed test CheckSDRefDom

   Running enterprise tests on : server.edu
      Starting test: Intersite
         ......................... server.edu passed test Intersite
      Starting test: FsmoCheck
         ......................... server.edu passed test FsmoCheck


dcdiag from working:
P:\>dcdiag

Domain Controller Diagnosis

Performing initial setup:
   Done gathering initial info.

Doing initial required tests

   Testing server: Default-First-Site-Name\AD1
      Starting test: Connectivity
         ......................... AD1 passed test Connectivity

Doing primary tests

   Testing server: Default-First-Site-Name\AD1
      Starting test: Replications
         ......................... AD1 passed test Replications
      Starting test: NCSecDesc
         ......................... AD1 passed test NCSecDesc
      Starting test: NetLogons
         ......................... AD1 passed test NetLogons
      Starting test: Advertising
         ......................... AD1 passed test Advertising
      Starting test: KnowsOfRoleHolders
         ......................... AD1 passed test KnowsOfRoleHolders
      Starting test: RidManager
         ......................... AD1 passed test RidManager
      Starting test: MachineAccount
         ......................... AD1 passed test MachineAccount
      Starting test: Services
         ......................... AD1 passed test Services
      Starting test: ObjectsReplicated
         ......................... AD1 passed test ObjectsReplicated
      Starting test: frssysvol
         ......................... AD1 passed test frssysvol
      Starting test: frsevent
         ......................... AD1 passed test frsevent
      Starting test: kccevent
         ......................... AD1 passed test kccevent
      Starting test: systemlog
         ......................... AD1 passed test systemlog
      Starting test: VerifyReferences
         ......................... AD1 passed test VerifyReferences

   Running partition tests on : Schema
      Starting test: CrossRefValidation
         ......................... Schema passed test CrossRefValidation
      Starting test: CheckSDRefDom
         ......................... Schema passed test CheckSDRefDom

   Running partition tests on : Configuration
      Starting test: CrossRefValidation
         ......................... Configuration passed test CrossRefValidation
      Starting test: CheckSDRefDom
         ......................... Configuration passed test CheckSDRefDom

   Running partition tests on : bme
      Starting test: CrossRefValidation
         ......................... bme passed test CrossRefValidation
      Starting test: CheckSDRefDom
         ......................... bme passed test CheckSDRefDom

   Running enterprise tests on : server.edu
      Starting test: Intersite
         ......................... server.edu passed test Intersite
      Starting test: FsmoCheck
         ......................... server.edu passed test FsmoCheck

P:\>