Most RecentMost ViewedMost LikesIntroducing more control over Direct Send in Exchange Online Read about a new feature that gives you more control over Direct Send in Exchange Online. No Exchange Server Security Updates for November 2025 We are not releasing any Exchange Server Security Updates for November 2025 Direct Send vs sending directly to an Exchange Online tenant This post discusses what Direct Send is, is not, and how to help control email sent directly to your tenant. Implementing Inbound SMTP DANE with DNSSEC for Exchange Online Mail Flow In May 2024, Microsoft is releasing a Public Preview for Inbound SMTP DANE with DNSSEC for Exchange Online mail flow. Dedicated Hybrid App: temporary enforcements, new HCW and possible hybrid functionality disruptions We are announcing enforcements to move customers along to using the dedicated hybrid app. Released: October 2025 Exchange Server Security Updates We have released Security Updates for Exchange Server SE, Exchange Server 2019 and Exchange Server 2016. Support for Exchange Server 2016 and Exchange Server 2019 ends today Support for Exchange Server 2016 and Exchange Server 2019 ends today. High Volume Email: Continued support for Basic Authentication & other important updates This announcement provides several important updates for High Volume Email. Exchange Online to retire Basic auth for Client Submission (SMTP AUTH) Today, we are announcing that Exchange Online will permanently remove support for Basic authentication with Client Submission (SMTP AUTH) starting March 2026. Released: August 2025 Exchange Server Security Updates We have released Security Updates for Exchange Server SE, Exchange Server 2019 and Exchange Server 2016.
