RE: Activation points and callout modes

On Wed, 2 Feb 2005, The Purple Streak, Hilarie Orman wrote:
> An implementation can certainly cache a message during simultaneous
> receive/send and defer storage until it is clear that the delivery
> won't complete?
In principle, yes, but timeouts become much more likely (e.g. because of
anti-spam measures on the next hop server) which greatly increases the
likelihood of accidental message duplication. There's a huge amout of
added complexity if the message has multiple recipients and the MTA isn't
relaying to a single destination.

Tony.
-- 
f.a.n.finch  <dot(_at_)dotat(_dot_)at>  http://dotat.at/
DOGGER FISHER GERMAN BIGHT: WEST OR NORTHWEST 5 OR 6, DECREASING 4. OCCASIONAL
DRIZZLE. MODERATE OR GOOD.