When using a Calendar Sync, QCS creates the stubs as mailbox-enabled user objects that are in an enabled state
Quest does not provide support for problems that arise from improper modification of the registry. The Windows registry contains information critical to your computer and applications. Make sure you back up the registry before modifying it. For more information on the Windows Registry Editor and how to back up and restore it, refer to Microsoft Article ID 256986 “Description of the Microsoft Windows registry”: http://support.microsoft.com/default.aspx?kbid=256986
To have QCS create the mailbox-enabled user stubs in a disabled state:
All newly created objects are set to a disabled state however existing objects will need to be disabled manually.