Hi! We've got two domain controllers (DC1, DC2) running 4.5.0. We had to perform maintenance on DC1, so we took it offline, thinking nothing of it. The clients (Debian 7 running winbindd, some 4.4, others 4.5), were not able to resolve names or groups anymore... Starting winbindd in debug mode on one of the clients, I could see that it was indeed talking to DC2, but was not able to perform user/group lookups. The resolv.conf files on all the machines have DC1 first, then DC2. I simply removed DC1 from resolv.conf, restarted winbindd, and everything worked great. I then put DC1 back at the top of resolv.conf, and users/groups did not resolve anymore. Is this a bug in winbindd on the client side, a bug on the server side, or simply a bug in the local DNS resolvers? ZZ