[Samba] sssd config doesn't ask for password

[Tim]

Hi,

I've configured sssd so far as advised in the wiki:
https://wiki.samba.org/index.php/Local_user_management_and_authentication/sssd

getent passwd/group works. Everything seems to be fine.

But now I realized, that when I use my domain admin user account to login on
that server via ssh, it is not asking for a password. Normal user must
authenticate with a password.

Where should I look for?

Regards
Tim