verifying gpg signature under opendkim-lua script

[Byunghee HWANG (Gmailify)]

Hellow GnuPG Hackers,

This is a very uncommon situation. I am running some news-letter mailing
under postfix mail server [yw-0919.doraji.xyz; Ubuntu 18.04.6 LTS]
(Google Cloud's Compute Engine). That news-letter email is sent
automatically every day by cron. And that email be signed with gpg
signature in start time (ed25519;
0x031016E4BEA9EA6A3A0F7D4DF60CC059E52D9596; made by GnuPG 2.2.4).

And outbond's mail server [yw-1204.doraji.xyz; Debian 11 (Bullseye)] has
OpenDKIM filter (with lua script). If possible, i would like to verify
the gpg fingerprint of that email with this OpenDKIM lua script. *This
point is my real question.*

Then the OpenDKIM filter do signing DKIM that email after verification
(success). If gpg fingerprint verification fails, the DKIM signing will
be withheld.

Any comments, ideas, thoughts, advice welcome!


Sincerely, Byunghee from South Korea
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