%Domain Admins@example.com ALL=(ALL:ALL) ALL

login as: administrator@example.com
administrator@example.com@localhost's password:
Access denied
administrator@example.com@localhost's password:

Invalid user administrator@example.com from 192.168.0.23
input_userauth_request: invalid user administrator@example.com [preauth]
pam_unix(sshd:auth): check pass; user unknown
pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=192.168.0.23
pam_sss(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=192.168.0.23
pam_sss(sshd:auth): received for user administrator@example.com: 10 (User not known to the underlying authentication module)
Failed password for invalid user administrator@example.com from 192.168.0.23 port 52078 ssh2
error: Received disconnect from 192.168.0.23: 13: Unable to authenticate [preauth]