[Samba] Samba AD DC Replication Problems

Nick Couchman Nick.Couchman at seakr.com
Sun Oct 20 17:03:44 MDT 2013

I've seen a couple of posts related to this, but nothing with definitive solutions or even hints that helped me in the right direction.  I'm attempting to add Samba4 DCs to my existing AD domain.  This mostly works - it replicates in information from the Windows DCs, starts the services, and appears to have all of the necessary information.  Scheduled replications from the Windows DCs to the Samba DCs work fine, but the Samba -> Windows replication is failing with a "Schema Mismatch" error (8418, 'WERR_DS_DRA_SCHEMA_MISMATCH').  The schema in the Samba DC was replicated from the Windows DC, so it should be identical, but it is not.  Anyone know what might be going on here - what schema Samba has that AD does not, what schema I might need to add to AD, or even how to debug this?  I've turned up the logging level on one of my Samba DCs, but it isn't yielding any useful information - nothing that tells me what about the schema is mis-matched.

Any insights, anyone - I'd love to get Samba up and running as a DC, especially with Samba 4.1 supporting the additional schemas from Windows!


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