[exim] Autoreply transport and DKIM

Any way to get the autoreply transport to sign with DKIM?

Or some other workaround (autoreply => run script that creates email in a
separate process)?

I'm drawing a blank here. Been searching for two hours, and browsing this
discussion-list.
Sorry if I'm just stupid.

Yes, we're getting dmarc errors, since autoreply-mail from us isn't being
signed.

Regards
Charlie Elgholm