i've seen queues backing up because the bank of 1200 bps modems weren't
enough, and queues backed up because a series of 400Meg messages kept failing
halfway through delivery.
Doesn't anyone here recall the infamous OSU/Compuserve ftp-by-mail
It totally killed OSU's mail system.
In a case of fiction portends reality, Karl Kleinpaste solved it
by applying a Net-trueism; he wrote the backlog off to 9-track
tapes and DROVE them across town....