Free On-line Dictionary of Computing:
quick mail queueing protocol
(QMQP) A
protocol
that provides a central
e-mail
queue for a
cluster
of hosts. QMOP is supposed
to provide fast transfers of messages with many recipients as
it can batch them up as a single transaction. It listens on
port 628.
http://cr.yp.to/mail.html
(2007-05-25)