Most RecentMost ViewedMost LikesExchange 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. High Volume Email: Continued support for Basic Authentication & other important updates This announcement provides several important updates for High Volume Email. No Exchange Server Security Updates for January 2026 We are not releasing any Exchange Server Security Updates for January 2026. Exchange Online ActiveSync Device Support Update We want to inform our users and organizations about an important upcoming change regarding Exchange ActiveSync (EAS) device connectivity to Exchange Online. Introducing more control over Direct Send in Exchange Online Read about a new feature that gives you more control over Direct Send in Exchange Online. Released: December 2025 Exchange Server Security Updates We have released Security Updates for Exchange Server SE. Exchange Server 2019 and 2016 ESU updates only. Released: October 2025 Exchange Server Security Updates We have released Security Updates for Exchange Server SE, Exchange Server 2019 and Exchange Server 2016. Update on the Exchange Server Antivirus Exclusions We are announcing a change in recommended AV exclusions on Exchange servers. Announcing Public Preview: Exchange Online Admin API We are announcing the Public Preview of the Exchange Online Admin API. Introducing Exchange Web Services (EWS) Usage Reports in Microsoft 365 Admin Center We are happy to announce two ways of getting Exchange Online Exchange Web Services (EWS) usage reporting.
