maildirqmtp scans a maildir,
dir, and sends each message to
host through QMTP.
prefix from the beginning of each envelope recipient address.
It ignores any message whose recipient address does not begin with
maildirqmtp removes messages accepted by
host. It bounces messages permanently rejected by
host back to the envelope sender,
and then removes them.
It treats temporary rejection as permanent rejection
for messages more than two weeks old.
Note that failure to connect to
host is not temporary rejection.
host is never reachable,
maildirqmtp will never remove messages.