From: Victor Duchovni (Victor.DuchovniMorganStanley.com)
Date: Mon Sep 03 2007 - 09:09:17 CDT

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Some email administrators report success with disconnecting on the first
5XX response as a default policy, and report no negative consequences,
but this is clearly a bit dicey, as multi-recipient messages with at
least one bad recipient have to be deferred by the sender unless the
sending software has another MX host to try.

I would not endorse this strategy under normal conditions, but it may
be a reasonable stress response? Yes it violates RFC (2)821. Is such
violation justified? Would this be solving the right problem?

What is the dynamic behaviour of the stress flag:

    - low-water mark?
    - hold-down time?
    - other?

It may be a shame if the stress flag oscilates on and off all day...
How do we detect that it needs to be on for a prolonged time, and how
do we detect that it is appropriate to turn it off?

--
        Viktor.

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