Environment:DC1 Primary: Win2008 R2DC2 Secondary: Centos 7 Samba 4.4.4 Dear,How to make sure that the DC's are synchronized? Running the commands below, I get an error stating that the ForestDNSZones and DomainDnsZones is not being replicated. # samba-tool drs replicate dc1 dc2 "DC=ForestDnsZones,DC=domain,DC=local" ERROR(<class 'samba.drs_utils.drsException'>): DsReplicaSync failed - drsException: DsReplicaSync failed (8452, 'WERR_DS_DRA_NO_REPLICA') File "/usr/local/samba/lib64/python2.7/site-packages/samba/netcmd/drs.py", line 350, in run drs_utils.sendDsReplicaSync(self.drsuapi, self.drsuapi_handle, source_dsa_guid, NC, req_options) File "/usr/local/samba/lib64/python2.7/site-packages/samba/drs_utils.py", line 83, in sendDsReplicaSync raise drsException("DsReplicaSync failed %s" % estr) # samba-tool drs replicate dc1 dc2 DC=DomainDnsZones,dc=domain,dc=local ERROR(<class 'samba.drs_utils.drsException'>): DsReplicaSync failed - drsException: DsReplicaSync failed (8452, 'WERR_DS_DRA_NO_REPLICA') File "/usr/local/samba/lib64/python2.7/site-packages/samba/netcmd/drs.py", line 350, in run drs_utils.sendDsReplicaSync(self.drsuapi, self.drsuapi_handle, source_dsa_guid, NC, req_options) File "/usr/local/samba/lib64/python2.7/site-packages/samba/drs_utils.py", line 83, in sendDsReplicaSync raise drsException("DsReplicaSync failed %s" % estr) But when I run command reversing the order of DC's, I get success message: Replicate from dc1 to dc2 was successful. Other obejtos are being successfully synchronized (Configuration and Schema). Anyone know how to solve this pending?Thank you!