search for: sambagroup_underscore

Hi, I have an issue with Samba using winbind. We have Active Directory groups with underscores (for example sambagroup_underscore). But an underscore in Samba (Unix) is a space in Active Directory. So my question is what character is used in Samba (Unix) for an underscore in Active Directory? Or are there other solutions to solve this? I would be very happy if you can help me! Met vriendelijke groet, Kind regards, Walte...