Hi i recently upgraded the samba version to samba-3.6.9. I joined my PC to Active directory and tried to get the gid's of some of the groups in AD. When i executed the following command it threw some error. wbinfo --name-to-sid=domain name\group failed to call wbcLookupName: WBC_ERR_DOMAIN_NOT_FOUND could not lookup domain name\group But actually that group is present in the AD server. This scenerio is found only for certain users, while i could get the sid's for remaining users. I have specified the idmap range and idmap configuration in smb.conf file. I guess this is failing in winbindd due to which the mapping is not happening properly.
Could you re-try with samba 3.6.10 ?