New Support Policy for Repaired Exchange Databases

Microsoft has released Hotfix Updates (HUs) that enable support for new functionality and address issues in the March 2024 Security Update (SU) . The April 2024 HU is available for the followin...

https://techcommunity.microsoft.com/t5/exchange-team-blog/released-april-2024-exchange-server-hotfix-updates/ba-p/4120536

UPDATE 4/23/2024: We have now released April 2024 Hotfix Updates which address known issues in March 2024 SU updates. Microsoft has released Security Updates (SUs) for vulnerabilities found in...

https://techcommunity.microsoft.com/t5/exchange-team-blog/released-march-2024-exchange-server-security-updates/ba-p/4075348

Today, we are announcing that, beginning in January 2025, Exchange Online will begin enforcing an external recipient rate limit of 2,000 RECIPIENTS IN 24 HOURS. Exchange Online does not support...

https://techcommunity.microsoft.com/t5/exchange-team-blog/exchange-online-to-introduce-external-recipient-rate-limit/ba-p/4114733

Today, we are announcing that Exchange Online will permanently remove support for Basic authentication with Client Submission (SMTP AUTH) in September 2025. After this time, applications and devi...

https://techcommunity.microsoft.com/t5/exchange-team-blog/exchange-online-to-retire-basic-auth-for-client-submission-smtp/ba-p/4114750

We wanted to make everyone aware of the blog post that went live on the Microsoft Dev blog, talking about new Nested App Authentication for Office Add-ins requirement that is going to be mandator...

https://techcommunity.microsoft.com/t5/exchange-team-blog/review-an-upcoming-authentication-change-for-outlook-add-ins/ba-p/4110365

UPDATE 4/3/2024: We added information about the sample ApplicationImpersonation reporting script. Today we are announcing that we will begin blocking the assignment of the ApplicationImpersona...

https://techcommunity.microsoft.com/t5/exchange-team-blog/retirement-of-rbac-application-impersonation-in-exchange-online/ba-p/4062671

Today we’re thrilled to announce the public preview of High Volume Email (HVE) for Microsoft 365. HVE is a new service designed primarily for line of business applications and other high-volume...

https://techcommunity.microsoft.com/t5/exchange-team-blog/public-preview-high-volume-email-for-microsoft-365/ba-p/4102271

We wanted to inform you of an important update regarding MFA App ID (Microsoft Exchange Online Remote PowerShell App ID) used in Exchange Online. The MFA App ID (A0C73C16-A7E3-4564-9A95-2BDF4...

https://techcommunity.microsoft.com/t5/exchange-team-blog/mfa-app-id-deprecation-in-exchange-online/ba-p/4036067

EHLO, folks! Here’s a story from my work with customers, that’s coming out as a blog post series. One of my banking customers raised a request regarding RBAC (Role Based Access Control) per...

https://techcommunity.microsoft.com/t5/exchange-team-blog/securing-resources-by-tailoring-exchange-online-rbac-part-1/ba-p/4097502

Thank you for joining me on this journey – hope you have enjoyed reading part 1 of this blog series . You are half-way done if you have reached Part 2 of this series. I’ll continue by calli...

https://techcommunity.microsoft.com/t5/exchange-team-blog/securing-resources-by-tailoring-exchange-online-rbac-part-2/ba-p/4100322

In April 2022, we released  an update to Exchange Server 2019 Management Tools that enables organizations that use Azure AD Connect and sync their Active Directory to manage Exchange recipien...

https://techcommunity.microsoft.com/t5/exchange-team-blog/last-exchange-server-scenario-feedback/ba-p/4092922

When troubleshooting mail flow rules related to attachments, it’s crucial to ensure the rules are set up correctly. At times, rules may not work as expected either due to misconfiguration or be...

https://techcommunity.microsoft.com/t5/exchange-team-blog/how-to-troubleshoot-mail-flow-rules-used-to-inspect-attachments/ba-p/4079829

TL;DR  MTA-STS is a standard that allows domain owners to specify how mail servers should handle the encryption and authentication of their SMTP connections.  MTA-STS can help prevent email spo...

https://techcommunity.microsoft.com/t5/exchange-team-blog/introducing-ps-mta-sts-a-powershell-module-to-enhance-mail-flow/ba-p/4075210

Today we are announcing the availability of the 2024 H1 Cumulative Update (CU) for Exchange Server 2019 (aka CU14). CU14 includes fixes for customer reported issues, a security change, and all pr...

https://techcommunity.microsoft.com/t5/exchange-team-blog/released-2024-h1-cumulative-update-for-exchange-server/ba-p/4047506

As we work to ensure better security, reliability, and performance for our customers, and as we announced in our previous blog post  in September 2023, we are DECOMMISSIONING THE OUTLOOK REST V2...

https://techcommunity.microsoft.com/t5/exchange-team-blog/final-reminder-outlook-rest-api-v2-0-and-beta-endpoints/ba-p/4058396

Today, we are happy to announce the latest release of Hybrid Configuration Wizard (HCW). As we announced in the Exchange Server Roadmap Update blog post, this new version of HCW allows you to ex...

https://techcommunity.microsoft.com/t5/exchange-team-blog/hybrid-configuration-wizard-with-granular-configuration-feature/ba-p/4038690

Today marks the end of Mainstream support for Exchange Server 2019.  Per the Exchange Server 2019 lifecycle , Exchange Server 2019 is now in Extended support. But, as we said last November, a ...

https://techcommunity.microsoft.com/t5/exchange-team-blog/mainstream-support-for-exchange-server-2019-ends-today/ba-p/4025016

BACKGROUND In the blog post published March 2023, Throttling and Blocking Email from Persistently Vulnerable Exchange Servers to Exchange Online, we explained that for security reasons, messages...

https://techcommunity.microsoft.com/t5/exchange-team-blog/how-to-pause-throttling-and-blocking-of-out-of-date-on-premises/ba-p/4007169

To help tenant administrators investigate issues related to the processing of their Mail Flow Rules (Exchange Transport Rules aka ETRs), we recently updated the Test-Message cmdlet in Exchange O...

https://techcommunity.microsoft.com/t5/exchange-team-blog/how-to-troubleshoot-exchange-online-transport-rules-using-the/ba-p/4000219

Last year, we announced  changes to our servicing model for Exchange Server that moved to a servicing cadence of two Cumulative Updates (CUs) per year, releasing in H1 and H2 of each calendar y...

https://techcommunity.microsoft.com/t5/exchange-team-blog/servicing-exchange-server-2019/ba-p/3989195