# /sbin/e-smith/config show sssd
sssd=service
AdDns=
DiscoverDcType=dns
LdapURI=ldap://127.0.0.1
Provider=ldap
Realm=
ShellOverrideStatus=disabled
Workgroup=
status=enabled
$USER_DOMAIN is not set either.
There is an alalogue conversation here : Error connecting to NS8: ns8-join: error: the following arguments are required: user_domain