As a commercial MTA and ESP provider, this proposal is very exciting to
me. Today we guess at these things and largely guess at things based off
of either observed behavior or out-of-band discussion with those operating
the receiver side of the email exchange. Having this defined in the
session would be great.
George
On Mon, 15 Mar 2021 at 19:47, John Levine <johnl(_at_)taugh(_dot_)com> wrote:
It appears that Sam Varshavchik <mrsam(_at_)courier-mta(_dot_)com> said:
MXes which do not announce their limits are going to dominate for some
time.
So, I still need to do this for the foreseeable time. So, what does this
SMTP extension buy me? The only thing I can think of: not duplicating
messages when I don't need to.
But the thing is: I don't recall anyone raising this to me, as a
problem.
This is not on my radar screen as a problem that wants to be solved.
I wouldn't think that your users would be very interested, but bulk
mailers are desperate for
any hints about how much mail they can stuff at people without getting
blocked or rate limited.
R's,
John
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*GEORGE SCHLOSSNAGLE*
chief evangelist
www.sparkpost.com
(el) george(_at_)sparkpost(_dot_)com
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