Hi all, I have been playing with samba4 (Samba 4.0.0alpha12-GIT-9ad9fd5) for a few days and so far its working great - clients join the domain, with roaming profiles and home directories served from it. AFAICT the xidNumber is incrementally assigned from a pool of values between lowerBound and upperBound. My questions are as follows: When is this mapping actually generated - i have created new users using net newuser username but this mapping was not present soon after the creation. Does it get generated when file access is needed? One can force its generation using wbinfo: bin/wbinfo --sid-to-uid S-1-5-21-4036476082-4153129556-3089177936-1006 3000012 which does generate the mapping, but this brings me to the next question: can this mapping be generated during account creation with specific uid, i.e. net newuser username -uid 503 I am aware that wbinfo can do this for you but when i run it the following error occurs bin/wbinfo --set-uid-mapping=503,S-1-5-21-4036476082-4153129556-3089177936-1006 failed to call wbcSetUidMapping: WBC_ERR_DOMAIN_NOT_FOUNDCould not create or modify uid to sid mapping Am I missing something obvious? And finally is there a way to ammend/add those values using ldap interface instead of operating directly on ldb database files? If so what would be the bind/base dn for such operation? Many thanks Lukasz