On 27.03.20 10:46, SysAdmin EM wrote:
>Is it possible to sign smtp from with DKIM? I clarify that I am not talking
>about the header from.
no, only headers can be signed.
Also, that would make forwarding impossible. Don't try to do that.
Matus UHLAR - fantomas, [hidden email] ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address.
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> * Matus UHLAR:
> > On 27.03.20 10:46, SysAdmin EM wrote:
> > > Is it possible to sign smtp from with DKIM? I clarify that
> > > I am not talking about the header from.
> > no, only headers can be signed.
> Message headers and body, actually. You are of course right in that the
> envelope data (SMTP session) is not DKIM signed.
This is the main difference between DKIM (authenticates headers/body)
and SPF (authenticates SMTP MAIL FROM and SMTP client IP address).