[exim] Re: autoreply and DKIM signature ?

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Autore: Kurt Jaeger
Data:  
To: exim-users
Oggetto: [exim] Re: autoreply and DKIM signature ?
Hi!

> On 2024-08-14, Jeremy Harris via Exim-users <exim-users@???> wrote:
> > On 14/08/2024 15:27, Kurt Jaeger via Exim-users wrote:
> >> So: user1@domain1 has an autoreply, and the autoreply
> >> should be signed with dkim for domain1.
> >
> > I do not agree.
> > The DKIM RFC says that anyone can sign a message.
>
> Yes, but it also says very clearly that it's up to the Identity
> Assessor to decide what, if any, trust to place in a message signed by
> a domain that is not aligned to the From: header (or other header).
>
> The obvious assessment to make is that it is a forgery signed by the
> forger, unless you have particular knowledge of a trust connection
> between the originating domain and the signing domain.


Thanks, that's a good point. I guess the trust connection
would come from the source IP that also is part of the SPF record of
the email, which is much more difficult to check.

-- 
pi@???            +49 171 3101372                    Now what ?


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