On Thu, Aug 15, 2024 at 08:36:19AM +0200, Cyborg via Exim-users wrote:
> > Because of the <> envelope-from, how can the proper sender-domain
> > (and dkim key) be found on the sending host ?
>
> To answere your original question: you don't do this.
>
> You send the auto-reply with the correct mailaddress or
> no.re...@your-domain.com.
From: https://datatracker.ietf.org/doc/html/rfc3834#section-3.1.1
Reply-To: https://datatracker.ietf.org/doc/html/rfc3834#section-3.1.2
In-Reply-To: https://datatracker.ietf.org/doc/html/rfc3834#section-3.1.6
Auto-Submitted: https://datatracker.ietf.org/doc/html/rfc3834#section-3.1.7
Envelope-Sender: https://datatracker.ietf.org/doc/html/rfc3834#section-3.3
Other text in RFC3834 may also be applicable.
--
Viktor.
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