link2xt 7c7f1cad7f Replace rspamd with OpenDKIM ...

OpenDKIM configuration
has two Lua scripts defining strict DKIM policy.

screen.lua filters out signatures that do not correspond
to the From: domain so they are not even checked.
final.lua rejects mail if it is not outgoing
and has no valid DKIM signatures.

OpenDKIM is configured as a milter on port 25 smtpd
to check DKIM signatures
and on mail reinjecting smtpd
to sign outgoing messages with DKIM signatures.

2024-01-24 13:29:24 +00:00

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