What version of Samba? Do you run Samba from Debian packages? I do (v4.2) and have found that there is a problem with users changing their passwords in general even from Windows clients. I think it has to do with the increased default security settings Samba 4.2 now uses, outlined here: https://anonscm.debian.org/cgit/pkg-samba/samba.git/commit/?h=stable-update&id=cbcad2a543a28926ee712cf299dbdc03da351cb0
Have you tried having a user change their password from a Windows machine? Sincerely, Sean M. Pappalardo Sr. Networks Engineer Renegade Technologies
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