Apple mail Delivery receipts
I know that Read Receipts (Message disposition notification) can not be relied on to inform one whether a recipient has opened, let alone read, an e-mail and so I do not intend to try. However a "Delivery Receipt" (Delivery Status Notification) is useful in that it indicates whether a mailbox exists and, if it does, whether it is accpting e-mails (e.g. not full).
Can I request a delivery receipt or is it automatically handled?