Most RecentNewest TopicsMost LikesMost ViewedNotes from the field: testing EWSAllowedAppIDs safely We wanted to share some tips on how to test EWSAllowedAppIDs (EWS AppID allow list). Understanding the new 100 GB mailbox entitlement for Microsoft 365 Business suites We wanted to show Administrators how recent mailbox quota changes for Microsoft 365 Business suites will apply to their users. Cross-Tenant Message Recall in Exchange Online We wanted to announce cross-tenant Message Recall in Exchange Online! How to determine which Resource Mailboxes are being actively used Here are some tips on how to learn more about Exchange Online resource mailbox use. Addressing Exchange Server May 2026 vulnerability CVE-2026-42897 We wanted to tell you how to address the Exchange Server May 2026 vulnerability CVE-2026-42897. Change Optics Report released into Public Preview to showcase messages impacted by future changes We wanted to tell you about a new Change Optics Report that is now in Public Preview. Celebrating 30 Years of Microsoft Exchange Exchange Server is 30 years old! AI‑Powered Troubleshooting for Microsoft Purview Data Lifecycle Management now available Just a quick note mentioning a release of AI‑powered troubleshooter for Microsoft Purview Data Lifecycle Management. Announcing SMTP DANE & MTA STS Connector Modes in Exchange Online We wanted to announce SMTP DANE & MTA STS Connector Modes in Exchange Online. Notes From the Field: Finding and Remediating EWS App Usage Before Retirement We wanted to share some tips on how to find out details of EWS usage in your tenant.
