[Samba] after user password change, member server unable to authenticate

[Tom Söderlund]

A Samba 4.1.12 member server can not authenticate a user anymore after he
changed his password. The AD environment is a duplicated 2012 R2 one. Could
this be just a temporary problem caused by the old password in the other
AD? Using SSSD for authentication so might have to ask from there... Any
hints from here still highly valued. -Tom