Announcing SMTP DANE & MTA STS Connector Modes in Exchange Online | Microsoft Community Hub
We wanted to announce SMTP DANE & MTA STS Connector Modes in Exchange Online.
SMTP DANE & MTA STS Connector Modes allow explicit control over how strictly Exchange Online enforces modern mail flow security standards when sending email over outbound connectors
techcommunity.microsoft.com/blog/exchang...
#MSExchange #SMTPDANE #MTASTS
10.03.2026 21:00
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Multi-Geo In-Region Routing General Availability | Microsoft Community Hub
We’re excited to share that Multi-Geo In-Region Routing reached General Availability in December 2025.
Do you use Multi-Geo Capabilities in Microsoft 365? In-Region Routing reached GA in December 2025. You can now control the geographic location where inbound email enters Exchange Online for anonymous inbound mail and hybrid inbound mail from on-premises.
techcommunity.microsoft.com/blog/exchang...
13.02.2026 18:03
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Exchange Online EWS, Your Time is Almost Up | Microsoft Community Hub
We wanted to provide an update on Exchange Online EWS deprecation.
Exchange Web Services (EWS) is approaching end of service in Exchange Online and will be disabled starting in October 2026, with a complete shutdown in mid-2027. This is Exchange Online only--no changes to EWS in Exchange Server.
#EWS #ExchangeOnline
techcommunity.microsoft.com/blog/exchang...
05.02.2026 16:32
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The Public Preview of the User Configuration API in the Graph beta endpoint is now available. The User Configuration API is a new set of endpoints you can use to create, read, update, and delete user configuration objects in Exchange Online mail folders.
devblogs.microsoft.com/microsoft365...
29.01.2026 18:32
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Trust DigiCert Global Root G2 Certificate Authority to Avoid Exchange Online Email Disruption | Microsoft Community Hub
We wanted to let you know of an upcoming change in certificates trusted by Exchange Online.
PSA: To avoid mail flow disruption between your organization and Exchange Online, organizations must ensure that their servers and clients trust the DigiCert Global Root G2 Certificate Authority and its subordinate CAs before April 30, 2026.
techcommunity.microsoft.com/blog/exchang...
#MSExchange
28.01.2026 22:47
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Message Trace Support Using Graph API is now in Public Preview | Microsoft Community Hub
We are happy to announce that the Message Trace support using Graph API is now in Public Preview.
Message Trace support using Graph API is now in Public Preview and GA will begin rolling out soon. If you currently use Message Trace using the Reporting Webservice, migrate to the Graph API before April 6, 2026.
techcommunity.microsoft.com/blog/exchang...
#MSExchange #MessageTrace #GraphAPI
22.01.2026 19:26
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You can raise a support case with Azure and request an unblock of port 25. Whether they will grant it depends on your subscription age and trust level. In lieu of that, you could also use Azure Communication Services and/or High Volume Email in Exchange Online.
15.12.2025 22:57
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Exchange Online ActiveSync Device Support Update | Microsoft Community Hub
We want to inform our users and organizations about an important upcoming change regarding Exchange ActiveSync (EAS) device connectivity to Exchange...
Starting March 1, 2026, devices running ActiveSync versions lower than 16.1 will no longer be able to connect to Microsoft services. This applies only to Exchange Online and only to mobile devices using native email apps.
#MSExchange #EAS #ActiveSync
techcommunity.microsoft.com/blog/exchang...
15.12.2025 14:15
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Description of the security update for Office Online Server: December 9, 2025 (KB5002817) - Microsoft Support
FYI, security updates were also released for Office Online Server yesterday. See support.microsoft.com/en-us/topic/... for details and download link.
#OfficeOnlineServer #WAC #Security
10.12.2025 17:25
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Released: December 2025 Exchange Server Security Updates | Microsoft Community Hub
We have released Security Updates for Exchange Server SE. Exchange Server 2019 and 2016 ESU updates only.
The December 2025 SU is now available for Exchange Server SE. This SU is also available for Exchange Server 2019 and Exchange Server 2016 customers in the Exchange Server ESU program.
techcommunity.microsoft.com/blog/Exchang...
#MSExchange #Security
09.12.2025 18:13
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Update to EWS Access for Kiosk / Frontline Worker Licensed Users | Microsoft Community Hub
We wanted to provide an update on EWS access for Kiosk / Frontline Worker licensed users.
Starting March 1, 2026, Microsoft will block EWS access for Exchange Online mailboxes that don't have license rights to EWS, namely, Exchange Online Kiosk, Microsoft 365/Office 365 F1, and Microsoft 365/Office 365 F3.
techcommunity.microsoft.com/blog/exchang...
#MSExchange #EWS #Licensing
02.12.2025 20:42
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M365 Local adds complexity without value. There's no benefit to running it for Exchange mailbox servers when a DAG deployed on physical hardware is cheaper and provides greater availability. Also, deployment must be performed by a solution partner certified by Microsoft, which increases costs.
29.11.2025 18:36
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November 11, 2025—KB5068861 (OS Build 26100.7171) - Microsoft Support
PSA: Microsoft has resolved the issue of duplicate schema entries when Windows Server 2025 is used as a Schema Master FSMO role holder. See support.microsoft.com/en-us/topic/....
This prevents the issue from happening but if you are experiencing the issue, contact the Windows AD support team.
12.11.2025 15:41
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