This is a list of users that should be allowed
to login to this service. Names starting with '@', '+' and '&'
are interpreted using the same rules as described in the
invalid users parameter.
If this is empty (the default) then any user can login.
If a username is in both this list and the invalid
users list then access is denied for that user.
The current servicename is substituted for %S
. This is useful in the [homes] section.
invalid users
No valid users list (anyone can login)
greg, @pcusers