I have a really strange problem with my macOS Sierra Server. It is connected to the Active Directory server and limited access to the login window only for few people. This is working without any problem. (Really only these users are allowed to login on mac server with their domain credentials)

Now I activated SSH because I need this for GIT repositories. I gave the domain user access rights on using ssh but I always get "Permission denied" when I try to connect. If I use a local account it works.

In the logs I only can find:

com.openssh.sshd.... Service exited with abnormal status code 255
com.openssh.sshd.... Service exited with abnormal status code 1

Do you have any idea whats going wrong here?