Error en AD con 3 controladores de dominio

Buenas a todos,

os explico mi situación: Tengo 1 controlador de dominio y 2 secundarios.
Bien, el caso es que tengo muchos problemas con las políticas. Le he pasado
un dcdiag, y el resultado es el siguiente: (A ver si alguien me da alguna
solución, ya que estoy buscando y no encuentro nada. Muchas gracias)


Domain Controller Diagnosis

Performing initial setup:
Done gathering initial info.

Doing initial required tests

Testing server: Nombre-predeterminado-primer-sitio\SERVER1
Starting test: Connectivity
. SERVER1 passed test Connectivity

Testing server: Nombre-predeterminado-primer-sitio\SERVER2
Starting test: Connectivity
. SERVER2 passed test Connectivity

Testing server: Nombre-predeterminado-primer-sitio\SERVER3
Starting test: Connectivity
. SERVER3 passed test Connectivity

Doing primary tests

Testing server: Nombre-predeterminado-primer-sitio\SERVER1
Starting test: Replications
. SERVER1 passed test Replications
Starting test: NCSecDesc
. SERVER1 passed test NCSecDesc
Starting test: NetLogons
. SERVER1 passed test NetLogons
Starting test: Advertising
Warning: SERVER1 is not advertising as a time server.
. SERVER1 failed test Advertising
Starting test: KnowsOfRoleHolders
. SERVER1 passed test KnowsOfRoleHolders
Starting test: RidManager
. SERVER1 passed test RidManager
Starting test: MachineAccount
. SERVER1 passed test MachineAccount
Starting test: Services
. SERVER1 passed test Services
Starting test: ObjectsReplicated
. SERVER1 passed test ObjectsReplicated
Starting test: frssysvol
. SERVER1 passed test frssysvol
Starting test: frsevent
There are warning or error events within the last 24 hours after
the SYSVOL has been shared. Failing SYSVOL replication problems may
cause Group Policy problems.
. SERVER1 failed test frsevent
Starting test: kccevent
. SERVER1 passed test kccevent
Starting test: systemlog
. SERVER1 passed test systemlog
Starting test: VerifyReferences
. SERVER1 passed test VerifyReferences

Testing server: Nombre-predeterminado-primer-sitio\SERVER2
Starting test: Replications
REPLICATION LATENCY WARNING
ERROR: Expected notification link is missing.
Source SERVER1
Replication of new changes along this path will be delayed.
This problem should self-correct on the next periodic sync.
. SERVER2 passed test Replications
Starting test: NCSecDesc
. SERVER2 passed test NCSecDesc
Starting test: NetLogons
. SERVER2 passed test NetLogons
Starting test: Advertising
. SERVER2 passed test Advertising
Starting test: KnowsOfRoleHolders
. SERVER2 passed test KnowsOfRoleHolders
Starting test: RidManager
. SERVER2 passed test RidManager
Starting test: MachineAccount
. SERVER2 passed test MachineAccount
Starting test: Services
. SERVER2 passed test Services
Starting test: ObjectsReplicated
. SERVER2 passed test ObjectsReplicated
Starting test: frssysvol
. SERVER2 passed test frssysvol
Starting test: frsevent
There are warning or error events within the last 24 hours after
the SYSVOL has been shared. Failing SYSVOL replication problems may
cause Group Policy problems.
. SERVER2 failed test frsevent
Starting test: kccevent
. SERVER2 passed test kccevent
Starting test: systemlog
. SERVER2 passed test systemlog
Starting test: VerifyReferences
. SERVER2 passed test VerifyReferences

Testing server: Nombre-predeterminado-primer-sitio\SERVER3
Starting test: Replications
. SERVER3 passed test Replications
Starting test: NCSecDesc
. SERVER3 passed test NCSecDesc
Starting test: NetLogons
. SERVER3 passed test NetLogons
Starting test: Advertising
. SERVER3 passed test Advertising
Starting test: KnowsOfRoleHolders
. SERVER3 passed test KnowsOfRoleHolders
Starting test: RidManager
. SERVER3 passed test RidManager
Starting test: MachineAccount
. SERVER3 passed test MachineAccount
Starting test: Services
. SERVER3 passed test Services
Starting test: ObjectsReplicated
. SERVER3 passed test ObjectsReplicated
Starting test: frssysvol
. SERVER3 passed test frssysvol
Starting test: frsevent
There are warning or error events within the last 24 hours after
the SYSVOL has been shared. Failing SYSVOL replication problems may
cause Group Policy problems.
. SERVER3 failed test frsevent
Starting test: kccevent
. SERVER3 passed test kccevent
Starting test: systemlog
. SERVER3 passed test systemlog
Starting test: VerifyReferences
. SERVER3 passed test VerifyReferences

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

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

Running enterprise tests on : midominio.es
Starting test: Intersite
. midominio.es passed test Intersite
Starting test: FsmoCheck
. midominio.es passed test FsmoCheck