[Samba] winbind joining NT4-style domain - two strange issues

[Sonic]

On Sat, Dec 17, 2016 at 5:07 PM, Stefan Froehlich via samba
<samba at lists.samba.org> wrote:
> In fact the problem was exactly the same with Samba 4.2.10 (shipping
> with Debian jessie). I only upgraded to 4.5.2 before posting to this
> list in order to avoid any "upgrade to the recent version" replies.

Try setting:
client ipc signing = No