Servidor no es operacional

Saludos, hace algún tiempo puse un tema al respecto, resulta que tengo
nuevamente problemas, tengo en mi pc el Adminpak, y cuando intento ingresar a
la opción de usuarios y equipo de AD, me indica que el servidor no es
operacional.

He ejecutado en DCDIAG y un NETDIAG, han salido algunos errores, los adjunto
para ver si me pueden dar una mano para resolver la situación.

DCDIAG

Testing server: Nombre-predeterminado-primer-sitio\SERPNCR07
Starting test: Replications
[Replications Check,SERPNCR07] A recent replication attempt failed:
From SERPNCR01 to SERPNCR07
Naming Context: CN=Schema,CN=Configuration,DC=dompncr01,DC=dompncr
The replication generated an error (8524):
La operaci¢n DSA no puede continuar debido a un error en la
consulta DNS.
The failure occurred at 2008-07-04 15:57:02.
The last success occurred at 2008-07-04 15:46:02.
1 failures have occurred since the last success.
The guid-based DNS name
c9eb05c0-91f3-4fc1-8e02-9968b4f64c66._msdcs.dompncr01.dompncr
is not registered on one or more DNS servers.
[SERPNCR01] DsBindWithSpnEx() failed with error 1722,
El servidor RPC no est disponible..
[Replications Check,SERPNCR07] A recent replication attempt failed:
From SERPNCR01 to SERPNCR07
Naming Context: CN=Configuration,DC=dompncr01,DC=dompncr
The replication generated an error (8524):
La operaci¢n DSA no puede continuar debido a un error en la
consulta DNS.
The failure occurred at 2008-07-04 15:57:02.
The last success occurred at 2008-07-04 15:46:02.
1 failures have occurred since the last success.
The guid-based DNS name
c9eb05c0-91f3-4fc1-8e02-9968b4f64c66._msdcs.dompncr01.dompncr
is not registered on one or more DNS servers.
[Replications Check,SERPNCR07] A recent replication attempt failed:
From SERPNCR01 to SERPNCR07
Naming Context: DC=dompncr01,DC=dompncr
The replication generated an error (8524):
La operaci¢n DSA no puede continuar debido a un error en la
consulta DNS.
The failure occurred at 2008-07-04 16:03:56.
The last success occurred at 2008-07-04 15:51:33.
9 failures have occurred since the last success.
The guid-based DNS name
c9eb05c0-91f3-4fc1-8e02-9968b4f64c66._msdcs.dompncr01.dompncr
is not registered on one or more DNS servers.


Starting test: systemlog
An Error Event occured. EventID: 0x00001659
Time Generated: 07/04/2008 15:07:30
(Event String could not be retrieved)
An Error Event occured. EventID: 0x00001659
Time Generated: 07/04/2008 15:22:50
(Event String could not be retrieved)
An Error Event occured. EventID: 0x00000457
Time Generated: 07/04/2008 15:49:26
(Event String could not be retrieved)
An Error Event occured. EventID: 0x00001659
Time Generated: 07/04/2008 15:53:29
(Event String could not be retrieved)
An Error Event occured. EventID: 0x00000457
Time Generated: 07/04/2008 15:53:56
(Event String could not be retrieved)
An Error Event occured. EventID: 0xC25A001D
Time Generated: 07/04/2008 15:56:49
(Event String could not be retrieved)
An Error Event occured. EventID: 0x00001659
Time Generated: 07/04/2008 15:57:07
(Event String could not be retrieved)
An Error Event occured. EventID: 0x00000457
Time Generated: 07/04/2008 16:03:19
(Event String could not be retrieved)
An Error Event occured. EventID: 0x00001659
Time Generated: 07/04/2008 16:03:40
(Event String could not be retrieved)
. SERPNCR07 failed test systemlog


NETDIAG
DNS test . . . . . . . . . . . . . : Failed
[WARNING] The DNS entries for this DC are not registered correctly on
DNS server '10.xx.xxx.9'. Please wait for 30 minutes for DNS server
replication.
[WARNING] The DNS entries for this DC are not registered correctly on
DNS server '10.xxx.xxx.243'. Please wait for 30 minutes for DNS server
replication.
[WARNING] The DNS entries for this DC are not registered correctly on
DNS server '10.xxx.xxx.220'. Please wait for 30 minutes for DNS server
replication.
[FATAL] No DNS servers have the DNS records for this DC registered.


LDAP test. . . . . . . . . . . . . : Passed
[WARNING] Failed to query SPN registration on DC
'serpncr01.dompncr01.dompncr'.


Muchas gracias por la ayuda que me puedan brindar.

Horhe