On Tue, Jul 18, 2023 at 11:29:20AM -0400, Wietse Venema via Postfix-users wrote:
> This can work with the 'advanced' example in FILTER_README:
>
> main.cf:
> content_filter = smtp-7bit:127.0.0.1:10025
>
> master.cf:
> smtp-7bit .. .. .. .. .. .. smtp
> -o { smtp_discard_ehlo_keywords = 8BITMIME }
>
> 127.0.0.1:10025 .. .. .. .. .. .. smtpd
> -o { content_filter= }
>
> And with multiple Postfix instances.
Right, and/or disable announcing "8BITMIME" on the server side.
This still needs to happen before DKIM signing, so can't be deferred to
the outbound delivery hop.
--
Viktor.
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