root@fs-01:~# wbinfo -n test-u1
S-1-5-21-831035265-3946242641-4171447920-1408 SID_USER (1)
root@fs-01:~# wbinfo -i test-u1
failed to call wbcGetpwnam: WBC_ERR_DOMAIN_NOT_FOUND
Could not get info for user test-u1
root@fs-01:~# getent passwd test-u1
_