This appears in /var/log/auth.log:
Mar 24 11:08:13 ubuntu passwd[21209]: pam_winbind(passwd:chauthtok): valid_user: wbcGetpwnam gave WBC_ERR_DOMAIN_NOT_FOUND
This appears in /var/log/auth.log:
Mar 24 11:08:13 ubuntu passwd[21209]: pam_winbind( passwd: chauthtok) : valid_user: wbcGetpwnam gave WBC_ERR_ DOMAIN_ NOT_FOUND