Breaking news, Microsoft is pulling the trigger on DANE next year: Implementing Inbound SMTP DANE with DNSSEC for Exchange Online Mail Flow - Microsoft Community Hub<https://techcommunity.microsoft.com/t5/exchange-team-blog/implementing-inbound-smtp-dane-with-dnssec-for-exchange-online/ba-p/3939694>
Also, it appears that it will come with a naming change for MX records, with mx.microsoft being the new root, so it will need to be used/added to traffic shaping rulesets along with mail.protection.outlook.com Mike Hillyer KumoMTA [https://techcommunity.microsoft.com/t5/image/serverpage/image-id/511675iB85503835F1D5C08/image-size/original?v=v2&px=-1]<https://techcommunity.microsoft.com/t5/exchange-team-blog/implementing-inbound-smtp-dane-with-dnssec-for-exchange-online/ba-p/3939694> Implementing Inbound SMTP DANE with DNSSEC for Exchange Online Mail Flow<https://techcommunity.microsoft.com/t5/exchange-team-blog/implementing-inbound-smtp-dane-with-dnssec-for-exchange-online/ba-p/3939694> In March 2024, Microsoft is releasing a Public Preview for Inbound SMTP DANE with DNSSEC for Exchange Online mail flow. techcommunity.microsoft.com
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