As I am currently using AusPost Improved and Request For Quote shipping, and have only just discovered the new OzPost, I may be premature in asking this, however.
With oversized items or parcels, (ie Length > 100 or girth > 140), upon selecting Auspost as the shipping method, I get a white screen with the error message:
The delivery rate for this option cannot be determined at this time. If you prefer to use this option as your shipping method, please contact the store owner.
As the only recourse to exiting this screen is to use the browser Back button, I am wondering whether provision has been made in OzPost (or can be made in AusPost) to disqualify itself from quoting with an inbox message (eg "Parcel/Item too large or heavy for this shipping method. Please select another shipping method or contact the store owner."). This would prompt the user to select the Request For Quote or other shipping method, or to re-constitute their order as more managable parcels.