On Sat, Mar 25, 2023 at 02:43:35PM -0400, Wietse Venema via Postfix-users wrote:
> postfix--- via Postfix-users:
> > smtp_tls_security_level = may/encrypt sets global policy for the
> > server. Is there a way to override that on a per user basis when
> > delivering mail to another public server? For example if the server
> > default is "may" can email being sent from a_select_u...@example.com
> > behave as if smtp_tls_security_level = encrypt?
>
> Use sender_dependent_default_transport_maps to choose a delivery
> agent from:
>
> /etc/postfix/master.cf:
> smtp-may unix .. .. .. .. .. smtp
> -o { smtp_tls_security_level = may }
> smtp-encrypt unix .. .. .. .. .. smtp
> -o { smtp_tls_security_level = encrypt }
> smtp-whatever unix .. .. .. .. .. smtp
> -o { smtp_tls_security_level = whatever }
If we're to support something like this systematically, it should be
<https://datatracker.ietf.org/doc/html/rfc8689>.
--
Viktor.
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