Directory Binding Error

Saludos, mi nombre es Juan Antonio Matos, tengo un problema, al preparar
mi
Domain (DC) para instalar Exchange, utilize la utilidad DCdiag.exe para
diagnosticar el Domain Controller, y me alojo las siguientes salidas a la
pantalla:

Domain Controller Diagnosis

Performing initial setup:
[dc] Directory Binding Error -2146892976:
The system detected a possible attempt to compromise security. Please
ensure
that you can contact the server that authenticated you.
This may limit some of the tests that can be performed.
Done gathering initial info.

Doing initial required tests

Testing server: Default-First-Site-Name\DC
Starting test: Connectivity
[DC] DsBindWithSpnEx() failed with error -2146892976,
The system detected a possible attempt to compromise security.
Please
ensure that you can contact the server that authenticated you..
. DC failed test Connectivity

Doing primary tests

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

Running partition tests on : ForestDnsZones
Starting test: CrossRefValidation
. ForestDnsZones passed test
CrossRefValidation

Starting test: CheckSDRefDom
. ForestDnsZones passed test CheckSDRefDom

Running partition tests on : DomainDnsZones
Starting test: CrossRefValidation
. DomainDnsZones passed test
CrossRefValidation

Starting test: CheckSDRefDom
. DomainDnsZones passed test CheckSDRefDom

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 : dgac
Starting test: CrossRefValidation
. dgac passed test CrossRefValidation
Starting test: CheckSDRefDom
. dgac passed test CheckSDRefDom

Running enterprise tests on : dgac.gov.do
Starting test: Intersite
. dgac.gov.do passed test Intersite
Starting test: FsmoCheck
. dgac.gov.do passed test FsmoCheck

mi preferred dns Server tiene el mismo ip que el Domain controller, En
este
orden quisieran me ayuden a corregir el problema.

Juan Ant. Matos