Messages in general could be signed with "d=exim.org" if desired: DKIM signatures without DMARC are verified standalone. Certainly non-list — transactional subscription confirmation requests, password resets, etc — messages from "@exim.org" addresses in the RFC5322.From would certainly benefit. (If this is already in place forgive me: it's a long time since I joined the list so don't have such a message to hand to check.)
Of course for sending sites publishing quarantine/reject DMARC policies (as we're moving towards) then the list signing with "d=exim.org" would be of no real value because the domain wouldn't align with the sender's address in the RCF5322.From … unless the list followed others and started rewriting that header, as was referred to before: at least for sending sites publishing a quarantine/reject DMARC policy. I think GNU Mailman 2.16 onwards offers this? That would also take into account the changes the list manager makes to messages: the Subject line, the footer on the body text, etc as the message passes through. I fear we're going to be in for an "interesting" ride, but think that times are changing and we can't just ignore DMARC. I just wish I could find that article I mentioned earlier — about an intermediary signing the message and including the original sender's signature within the signed headers (or something like that) — in case it helped with this sort of scenario. I'll look again later… Cheers, Mike B-) On 1 February 2017 at 10:53, Jeremy Harris <[email protected]> wrote: > On 01/02/17 10:27, Mike Brudenell wrote: > > By the way, I confess I find it a little sad that the list doesn't > > DKIM-sign its outgoing messages > > What identity would you say it should use for signing, say, your > message (which has a from: header domain of york.ac.uk)? > -- > Cheers, > Jeremy > > > -- > ## List details at https://lists.exim.org/mailman/listinfo/exim-users > ## Exim details at http://www.exim.org/ > ## Please use the Wiki with this list - http://wiki.exim.org/ > -- Systems Administrator & Change Manager IT Services, University of York, Heslington, York YO10 5DD, UK Tel: +44-(0)1904-323811 <01904%20323811> Web: www.york.ac.uk/it-services Disclaimer: www.york.ac.uk/docs/disclaimer/email.htm -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
