I've added DMARC to the DNS now lets see how this goes. Andrew. -----Original Message----- From: Andrew Hodgson <andrew@hodgson.io> Sent: 21 November 2022 09:25 To: Mailing list for blind system administrators <blind-sysadmins@lists.hodgsonfamily.org> Subject: [Blind-sysadmins] Re: Test mail from new instance Hi. Mailman always modifies the message before it goes out so the original DKIM signature will be invalid. DMARC is a hot topic with list server software and I couldn't get a best practice answer on the best way of setting it up so it plays nicely with the way Mailman works. Andrew. -----Original Message----- From: Jason White via Blind-sysadmins <blind-sysadmins@lists.hodgsonfamily.org> Sent: 21 November 2022 05:19 To: blind-sysadmins@lists.hodgsonfamily.org Cc: Jason White <jason@jasonjgw.net> Subject: [Blind-sysadmins] Re: Test mail from new instance Jackie McBride <abletec@gmail.com> wrote:
That's weird, Jason. When I asked GMail to show me the headers, I got, in part: SPF: PASS with IP 46.226.104.252 Learn more DKIM: 'PASS' with domain lists.hodgsonfamily.org
But you are correct that DMARC is not present.
Checking my own message as circulated via the list: Authentication-Results: svr.jasonjgw.net; dkim=pass header.d=lists.hodgsonfamily.org header.s=dkim header.b=f3esANwK; dkim=fail ("body hash did not verify") header.d=jasonjgw.net header.s=mail header.b=HmpYQIjv; spf=pass (svr.jasonjgw.net: domain of blind-sysadmins-bounces@lists.hodgsonfamily.org designates 2001:4b98:dc0:43:f816:3eff:fed7:3e66 as permitted sender) smtp.mailfrom=blind-sysadmins-bounces@lists.hodgsonfamily.org; dmarc=none I interpret this as desirable and correct, except for the missing DMARC policy. The list server seems to have added its own DKIM signature, invalidating the original signature. _______________________________________________ Blind-sysadmins mailing list -- blind-sysadmins@lists.hodgsonfamily.org To unsubscribe send an email to blind-sysadmins-leave@lists.hodgsonfamily.org _______________________________________________ Blind-sysadmins mailing list -- blind-sysadmins@lists.hodgsonfamily.org To unsubscribe send an email to blind-sysadmins-leave@lists.hodgsonfamily.org