Bug#941804: exim4: remote_smtp_smarthost transport does not set DKIM variables

[Larry Doolittle]

Andreas -

On Thu, Nov 02, 2023 at 04:51:55PM +0100, Andreas Metzler wrote:
> Just to be clear: You have got a domain but lack both control of a
> machine that is not blocked from accessing outgoing port 25 (and could
> deliver)

Right.  Standard for a "modern" consumer-grade ISP in the U.S.

> and the domain package does also lack a smarthost for that
> domain that would apply a dkim signature?

Yes.  The boa.org domain infrastructure and maintenance is
self-serve and all-volunteer.  (Thanks, Russ!)

How would a domain-package smarthost help, if I couldn't get to
its port 25 because of the ISP firewall?

Of course I don't know the individual situations of others who have
posted this question and its answer to various on-line forums.
But it's common enough that it was easy to find the answer and
patch my Debian exim4 setup to get the desired results.

You can see the DKIM my exim4 added, before passing to an ISP smarthost,
if you look at the headers of this email.

  - Larry