On Fri, 14 Apr 2023, John Levine via mailop wrote:
SRS never made it into the IETF standards, by the way, because the
problem it was supposed to solve (forwarding delayed bounces) did
not actually exist.
Since today is Friday ...
I was just re-reading
https://www.infradead.org/rpr.html
(dated Sept 2004) which explains how SRS (without SPF)
is the answer to the problem SPF was supposed to solve !
[ I was actually looking for the theoretical slightly-open relay
issue which made me not enable SPF or SRS for a long time. ]
--
Andrew C. Aitchison Kendal, UK
and...@aitchison.me.uk
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