You only need to set the sasl wrapping to plain when talking to windows ad. With a samba/ubuntu AD, Try removing that setting entirely from smb.conf. The default value ("sign") should be enough in that case.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1576799 Title: Regression: 2:4.3.8+dfsg-0ubuntu0.14.04.2 Failed to Issue the StartTLS instruction To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1576799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs