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Exchange Team Blog articles

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Latest posts

Last updated 21 days ago

T-1 month: Exchange Server 2016 and Exchange Server 2019 End of Support

21 days ago

September 14, 2025    On October 14, 2025, one month from now, Exchange...

The first temporary enforcement of dedicated hybrid app use is coming on September 16

24 days ago

We wanted to post a quick reminder that on September 16 2025...

Released: September 2025 Exchange Server Hotfix Updates

28 days ago

Microsoft has released Hotfix Updates (HUs) that address issues in earlier updates...

Limiting Onmicrosoft Domain Usage for Sending Emails

about 2 months ago

MOERA domains for email When a organization creates a new tenant in...

Introducing Cloud-Managed Remote Mailboxes: a Step to Last Exchange Server Retirement

about 2 months ago

Background: the “last Exchange server” challenge Many organizations that moved all mailboxes...

Released: August 2025 Exchange Server Security Updates

about 2 months ago

Microsoft has released Security Updates (SUs) for vulnerabilities found in Exchange Server...

Direct Send vs sending directly to an Exchange Online tenant

2 months ago

After our recent post Introducing more control over Direct Send in Exchange...

Dedicated Hybrid App: temporary enforcements, new HCW and possible hybrid functionality disruptions

2 months ago

In April 2025, we announced a few changes to Exchange hybrid environments...

What is Direct Send and how to secure it

2 months ago

After our recent post Introducing more control over Direct Send in Exchange...

Use GitHub Copilot to help speed up your transition from EWS

2 months ago

With the Exchange Online EWS deprecation deadline getting closer, we're providing AI-powered...

Deprecation of native public folder migrations to service from very old versions of Exchange

2 months ago

While Microsoft does not currently support any version of Exchange Server older...

Announcing Exchange 2016 / 2019 Extended Security Update program

3 months ago

With both Exchange 2016 and 2019 going out of support in October...