Join us June 17–18 for a deep dive into Copilot Control System—live expert-led sessions and Q&A on data security, agent lifecycle, adoption, and more! Learn more >
Most RecentMost ViewedMost LikesIntroducing Exchange Online Tenant Outbound Email Limits We’re introducing new tenant-level outbound email limits (also known as the Tenant External Recipient Rate Limit or TERRL). Released: May 2025 Exchange Server Hotfix Updates We have released Hotfix Updates for Exchange Server 2016 and Exchange Server 2019. Upgrading your organization from current versions to Exchange Server SE We wanted to provide additional guidance and FAQ for preparing your organizations for Exchange Server SE release. T-6 months: Exchange Server 2016 and Exchange Server 2019 End of Support On October 14, 2025, 6 months from today, Exchange Server 2016 and Exchange Server 2019 reach end of support. 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. Exchange Server Roadmap Update Today, we are providing an update on our product roadmap for Microsoft Exchange Server, and our next milestones in the Exchange Server journey. Public Preview: High Volume Email for Microsoft 365 Today we’re thrilled to announce the public preview of High Volume Email (HVE) for Microsoft 365. Throttling and Blocking Email from Persistently Vulnerable Exchange Servers to Exchange Online As we continue to enhance the security of our cloud, we are going to address the problem of email sent to Exchange Online from unsupported and unpatched Exchange servers. 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. Directory Based Edge Blocking Now Available for Public Folders & Dynamic Distribution Groups Announcing the availability of Directory-Based Edge Blocking feature for mail enabled public folders (MEPF) and dynamic distribution groups (DDG).
