We’ve seen non-English messages from account-security-nore...@accountprotection.microsoft.com that fail DKIM. English messages seem to be fine. I suspect there is an encoding step applied after DKIM-signing, but I haven’t been able to confirm.
> On Dec 4, 2020, at 8:35 AM, Mary via mailop <mailop@mailop.org> wrote: > > Hello, > > Is it common to see emails from Microsoft having a bad DKIM signature? > > Here is an example: > > opendkim[614]: B78DA4A48C: external host > mail-bn8nam11on2062.outbound.protection.outlook.com attempted to send as > accountprotection.microsoft.com > opendkim[614]: B78DA4A48C: bad signature data > > postfix/cleanup[188082]: B78DA4A48C: milter-reject: END-OF-MESSAGE from > mail-bn8nam11on2062.outbound.protection.outlook.com[40.107.236.62]: 5.7.0 bad > DKIM signature data; > from=<account-security-nore...@accountprotection.microsoft.com> to=<reducted> > proto=ESMTP helo=<NAM11-BN8-obe.outbound.protection.outlook.com> > > > Thank you. > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://list.mailop.org/listinfo/mailop _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
