On Tue, 21 May 2024, Mark E. Jeftovic via mailop wrote:
The only difference between messages that get through vs ones that are
rejected (same message) is whether we send to the Yahoo email box directly,
or else via an email forward (which has SRS enabled, and optionally SPF and
even minimal DMARC)
I had not realized that SRS was possible without SPF.
--
Andrew C. Aitchison Kendal, UK
and...@aitchison.me.uk
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