Disallow global address book access for OX users
Trying to disable access for an user results in an error in
Global address book can not be disabled for non-PIM users.
The error message is somehow misleading. The meaning of it is the global address book can only disabled for PIM-only users. Any user not being only PIM user can not have the global address book disabled.
For default users with Webmail, PIM, Groupware and WebDAV it is not possible to limit access. Only “PIM” is allowed to disable access.
You can try to withdraw the permission with the oxadmin user, so that only the owner (oxadmin) has access permission.