Am 14.08.24 um 15:31 schrieb Kurt Jaeger via Exim-users:
> Hi!
>
> Recently, I came upon a problem without a solution:
>
> If I trigger an autoreply (for example because of vacations),
> how do I get the system to add a DKIM-header for the proper domain ?
>
>
> 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.reply@???.
To avoid mailloops, you simply add the incoming address to a db with the
timestamp when you answere and check up front in your autoreply code,
that the sender is not in that database for a specific time-frame.
Now you can use DKIM as intended.
You will need a little helper app that manages the autoreply for you. A
pure exim solution may be too complex.
Best regards,
Cyborg
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