Re: SMTP QoS

> So if we specify a priority mechanism that's
> reasonable and implementable it will deploy rapidly and widely.
probably so.  the real trick is to specify it in such a way that
it doesn't tend to block delivery of other mail.

(in other words, one of the problems with a priority queueing system
is that naive implementations tend to starve tasks with lower priority -
and many MTAs have naive queueing systems)