On Fri, 5 Jan 2024, Randy Bush via Exim-users wrote:

iphone -> mail.rg.net:465
mail.rg.net -> psg.com:25+tls
psg.com -> ran.opsg.com:25+tls
ran.psg.com -> laptop:imap

should psg.com have recognized that it was already properly DKIMmed and
not added the second?

Not strictly relevant for DKIM, but for ARC
if ran.[o]psg.com trusts psg.com but not mail.rg.net,
then it would definitely make a difference.

--
Andrew C. Aitchison                      Kendal, UK
                   [email protected]

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