On Mon, Sep 04, 2023 at 12:18:38PM -0400, Viktor Dukhovni via Postfix-users
wrote:
> It is best to enable this for outbound mail only, i.e. messages that
> arrive on the submission ports or through local submission via
> sendmail(1)->postdrop(1)->pickup(8). That way, inbound 8bit mail will
> not fail DKIM signature checks.
>
> One way to do that is to tweak the master.cf file to match the below:
>
> $ postconf -P '*/inet/enforce_mime_input_conversion'
> smtps/inet/enforce_mime_input_conversion = yes
> submission/inet/enforce_mime_input_conversion = yes
>
> $ postconf -Mf pickup/unix cleanups/unix
> pickup unix n - n 60 1 pickup
> -o cleanup_service_name=cleanups
> cleanups unix n - n - 0 cleanup
> -o enforce_mime_input_conversion=yes
>
> [ Your service name for wrapper-mode SMTP on port 465 may be
> "submissions" or just "465", ... The "cleanups" service entry
> is a clone of the "cleanup" entry with a tweak. ]
Note, this was with the 3.9-20230901 snapshot, the "en" in "enforce_..."
was dropped in 3.9-20230903.
--
Viktor.
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