I'm now getting the same from the Land Registry: Jan 27 18:05:24 emil postfix/smtpd[734113]: DA88621F91: client=d218-4.smtp-out.eu-west-2.amazonses.com[23.249.218.4] Jan 27 18:05:24 emil postfix/cleanup[734121]: DA88621F91: message-id=<010b018d4c1902e5-14919a91-2793-4c5e-8d86-4091eaeb1175-000...@eu-west-2.amazonses.com> Jan 27 18:05:24 emil opendkim[768]: DA88621F91: d218-4.smtp-out.eu-west-2.amazonses.com [23.249.218.4] not internal Jan 27 18:05:24 emil opendkim[768]: DA88621F91: not authenticated Jan 27 18:05:25 emil opendkim[768]: DA88621F91: message has signatures from accounts.landregistry.gov.uk, amazonses.com Jan 27 18:05:25 emil opendkim[768]: DA88621F91: s=s7vtg5zfwt6jcj77lxzbi3rmck6i6vrp d=accounts.landregistry.gov.uk a=rsa-sha256 SSL error:04091068:rsa routines:int_rsa_verify:bad signature Jan 27 18:05:25 emil opendkim[768]: DA88621F91: bad signature data Jan 27 18:05:25 emil opendmarc[1652567]: DA88621F91: accounts.landregistry.gov.uk fail Jan 27 18:05:25 emil postfix/cleanup[734121]: DA88621F91: milter-reject: END-OF-MESSAGE from d218-4.smtp-out.eu-west-2.amazonses.com[23.249.218.4]: 5.7.1 rejected by DMARC policy for accounts.landregistry.gov.uk; from=<010b018d4c1902e5-14919a91-2793-4c5e-8d86-4091eaeb1175-000...@eu-west-2.amazonses.com> to=<mors...@morsing.cc> proto=ESMTP helo=<d218-4.smtp-out.eu-west-2.amazonses.com> I wish there was a test I could do to check what is actually wrong... Regards, Henrik Morsing On Fri, Jan 12, 2024 at 03:48:17PM +0000, Henrik Morsing via GLLUG wrote:
Good afternoon, Not dircetly Linux, sorry, but British Gas has spent the last year sending me letters saying they can't email me. When I look into it, their emails are rejected based on a bad DKIM signature. The problem is, not receiving the email, how can I find out what the problem is? mxtoolbox says their setup is fine, but that surely can't check the signature inside one of their emails. What is slightly odd is that DMARC policy is set to none, so shouldn't reject anything anyway. I can't say I'm a DKIM/DMARC expert, but this is what I see: Dec 22 12:37:12 emil opendkim[768]: 2F7612233E: s=mailjet d=britishgas.co.uk a=rsa-sha256 SSL error:04091068:rsa routines:int_rsa_verify:bad signature Dec 22 12:37:13 emil opendmarc[3858740]: 2F7612233E: britishgas.co.uk fail Dec 22 12:37:13 emil postfix/cleanup[3996586]: 2F7612233E: milter-reject: END-OF-MESSAGE from o94.p12.mailjet.com[87.253.237.94]: 5.7.1 rejected by DMARC policy for britishgas.co.uk; from=<296f63a1.caaabphwdncaaaaaaaaaakg7asyaaycquv4aaaaaabbdggblh...@a1065858.bnc3.mailjet.com> to=<mors...@morsing.cc> proto=ESMTP helo=<o94.p12.mailjet.com> Not sure where to go from here though. Smells like their problem to me, but I don't want to tell them that without proof. Any hints? Regards, Henrik Morsing -- -- GLLUG mailing list GLLUG@mailman.lug.org.uk https://mailman.lug.org.uk/mailman/listinfo/gllug
-- -- GLLUG mailing list GLLUG@mailman.lug.org.uk https://mailman.lug.org.uk/mailman/listinfo/gllug
