Microsoft Exchange Online now supports inbound SMTP DANE with DNSSEC, enhancing email security. It's in General Availability since October 22, 2024. The feature is off by default and can be enabled via Exchange PowerShell, with a new enabling experience coming by end of 2024. Additional information and limitations are detailed in the provided links.
Applies to: Exchange Online
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).