In my Lab I'm trying to Setup a copy of our Exchange-Organisation. Now when I'm trying to create a Mailboxdatabase, on both Mailbox Server, I'm getting following error:
Active Directory operation failed on Server.domain.intra. This error is not retriable. Additional information: An attempt was made to modify an object to include an attribute that is not legal for its class.
Active directory response: 0000207D: UpdErr: DSID-0315121C, problem 6002 (OBJ_CLASS_VIOLATION), data -2115382284
I already did:
and also checked the Schema attributes from that thread:
Any other suggestions or help is appreciated.