I've answered you numerous times now on this - please check my previous
replies.
The one thing that you're asking that is _new_ is whether the system
attendant functions will still operate if the store that houses the SA
mailbox is in a dismounted state.
The answer is no.
Oliver
Move mailbox will not work if the SA mailbox is not accessible.
It will not be automatically created until you dismount and remount
another store.
Basic mail flow will continue however if the SA mailbox is not
accessible.