Dňa 19. augusta 2023 15:37:08 UTC používateľ Jeremy Harris via Exim-users <exim-users@???> napísal:
>RFC 5322 only lists this as a SHOULD (section 3.8.4) -
>but I see it as spamsign.
Beware, eg. Alibaba sends its access code (2FA or so) without
Message-ID.
regards
--
Slavko
https://www.slavino.sk/
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