
<28 April 2025>
How to set up Inbound SMTP DANE and DNSSEC for Microsoft 365
In March 2022, Microsoft set up Outbound SMTP DANE with DNSSEC automatically. You didn't have to do anything for that yourself.
Inbound mail traffic (receiving e-mails), however, was a different story: there, it took until 2024 before Microsoft also made this functionality available.
In this article, we will explain step by step how to set up Inbound SMTP DANE and DNSSEC within Exchange Online.