Nigel Metheringham wrote:
- in many cases the vast majority of
messages could be switched through a box without touching the disk at
all (you would hold off acknowledging the incoming message until the
next hop had acked your onward transmission of it).
I've been wanting to hack this up for ages, to stop my queue getting
clogged with undeliverable bounces resulting from those of my
users who forward to AOL (in particular) which does content-based
refusals after data-phase. It'd also address similar issues
with yahoo et.al. who claim it's far too difficult to validate
a recipient name at RCPT time (blech!).
I had in mind to use the same connection opened for a verify callout,
if possible.
That sort of thing needs a hugely different architecture to that used by
exim.
Therein lies the rub :-)
- Jeremy
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