Gracias Miguel
Te comento que cuando ejecuto el dcdiag me aparece un error como el siguiente
Testing server: Nombre-predeterminado-primer-sitio\xxxxxxxxxx
Starting test: Connectivity
The host 15535202-7d57-44aa-b44e-b071a4c6e8ef ._msdcs.contoso.com could not be resolved to an
Ip address. Checke the DNS server, DHCP, server name, etc
Although the Guid DNS name
(15535202-7d57-44aa-b44e-b071a4c6e8ef ._msdcs.contoso.com) couldn't be resolved, the server name (xxxxxxxxx.contoso.com) resolved to the IP address (192..........) and was pingable. Check thet IP address is registered correctly with the DNS server.
.......................................xxxxxxxx failed test connectivity
xxxxxxxx es el nombre de mi server
Te agradezco si me puedes orientar