I had similar problems. Installing winbind and libnss-winbind seems to have fixed it. Before that, i tried upgrading to Ubuntu 16.04 and switching dns backend from bind9_flatfile to samba internal, maybe that helped as well.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1573221 Title: Regression on 4.3.8 upgrade: clients fail to connect To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1573221/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs