When someone is scheduling meetings on behalf of another user (via CalDav or Convergence), should the freebusy lookups be performed via the user's personal outbox, or to the calendar owner's outbox? I couldn't find where this is stated in the RFC.
The Caldav scheduling spec says "The "ORGANIZER" property value in the "VFREEBUSY" component MUST
match one of the calendar user addresses of the owner of the Outbox
collection.". So I would say the Outbox of the user on whose behalf the request is being made.