Re: [exim] Development Request for Selectable Opportunistic …

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Autor: Heiko Schlittermann
Data:  
Para: exim-users
Asunto: Re: [exim] Development Request for Selectable Opportunistic vs. Forced TLS
Stan Haimes, MD via Exim-users <exim-users@???> (Fr 30 Apr 2021 07:42:51 CEST):
> I have a need for a slightly different implementation of Opportunistic TLS
> in EXIM.  I am also willing to provide compensation for its development and
> would be happy to donate the code to public distribution if it would be
> useful to others.
>
> For most messages, sending the outgoing email by Opportunistic TLS would be
> desirable and perfect.
>
> However, if the Subject field contains "[Secure]", I would like that to
> trigger different message handling by EXIM.  The presence of this character
> string in the Subject field would indicate that the sender was requiring
> that this message be sent via TLS or not at all.  As a result, if the email
> could be sent via Forced (Mandatory) TLS, the email submission would
> complete in the usual manner.  However, if the attempted TLS connection was
> not successful, the email would be redirected to the sender with an
> indication that the secure TLS email transmission was not successful.


your're looking for something like this?:

        begin transports
            smtp:
                driver = smtps
                hosts_require_tls = ${if match{$h_subject:}{\N^\[secure\]\N}{*}}



    Best regards from Dresden/Germany
    Viele Grüße aus Dresden
    Heiko Schlittermann
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