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Re: Fixing graylisting [was TBR]

2007-11-16 07:36:53

Arnt Gulbrandsen <arnt(_at_)oryx(_dot_)com> wrote:
sm(_at_)resistor(_dot_)net writes:

One of the unintended advantages of TBR over greylisting is that it 
can be used for a message recall feature. :-)

So can greylisting if you can reach into the queue. Which noone can 
today, but if you're going to implement something new you might as well 
implement a reach-into-the-queue feature as TBR.

   Actually, reach-into-the-queue isn't a dependable recall. The
message my be queued becase of a 4xx error _after_ DATA while waiting
for content-analysis. To _deliver_ the mesage before the SMTP retry
would be a violation of protocol, but the message is clearly out there
and could be retrieved.

   (We could start a thread on message recall if folks think this is
worth further discussion...)

John Leslie <john(_at_)jlc(_dot_)net>

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