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Most RecentMost ViewedMost LikesThe way to control EWS usage in Exchange Online is changing We are announcing a change in behavior of the EWSEnabled tenant-wide switch in Exchange Online. Re-release of November 2024 Exchange Server Security Update packages Today we are re-releasing the November 2024 SUs for Exchange Server. 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. Retirement of RBAC Application Impersonation in Exchange Online We wanted to announce deprecation plans for ApplicationImpersonation role in Exchange Online. 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. Critical Update: ApplicationImpersonation RBAC Role Deprecation in Exchange Online We wanted to share an update on the ApplicationImpersonation RBAC Role Deprecation in Exchange Online. Announcing General Availability of Inbound SMTP DANE with DNSSEC for Exchange Online Today, we are excited to announce the General Availability of Inbound SMTP DANE with DNSSEC! 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) in September 2025. Introducing MTA-STS for Exchange Online We have been validating our implementation of the MTA-STS standard and are now pleased to announce support for MTA-STS for all outgoing messages from Exchange Online. Released: November 2024 Exchange Server Security Updates We have released Security Updates for Exchange Server 2016 and Exchange Server 2019.