Upcoming Breaking Changes to Modifying Sensitive Email Properties via Graph API | Microsoft Community Hub We are announcing upcoming changes to what message properties can be changed using Graph API.  

Starting December 31, 2026, Microsoft is implementing a significant update affecting applications that modify sensitive properties on non-draft email messages.

Details at techcommunity.microsoft.com/blog/exchang....

#MSExchange #Graph

Celebrating 30 Years of Microsoft Exchange!

For an in-depth look, see also:

Part I - linkedin.com/pulse/celebr...

Part II - linkedin.com/pulse/celebr...

Part III - linkedin.com/pulse/celebr...

#MSExchange #30Years

Give Us Feedbaxck on Faster, Simpler Data Purging for Exchange Online | Microsoft Community Hub Microsot Purview team is looking for feedback on Priority Cleanup improvements.  

Microsoft is looking for feedback for the next version of Priority Cleanup (v2).

techcommunity.microsoft.com/blog/exchang...

#MSExchange #Purview #PriorityCleanup

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

No Exchange Server Security Updates for March 2026 | Microsoft Community Hub We are not releasing any Exchange Server Security Updates for March 2026.  

PSA: No Exchange Server Security Updates for March 2026 - techcommunity.microsoft.com/blog/Exchang...

#MSExchange

Exchange Server SE Licensing, Part III Since posting my previous articles about licensing and product keys in Exchange Server SE, Exchange Server SE Licensing and Product Keys and Exchange Server SE Licensing, Part II, I’ve received even m...

Exchange Server SE Licensing, Part III

www.linkedin.com/pulse/exchan...

Part III covers purchasing options, buying from CSPs, and obtaining Extended Use Rights.

#MSExchange #Licensing

Dave Stork taking a selfie in front of a conference presentation screen at Exchange Summit 2026 in Würzburg. The slide behind him displays the talk title ‘IAM and Exchange: Frenemies in Hybrid Organizations’ by Dave Stork.

Almost time! Session ‘IAM and Exchange: Frenemies in Hybrid Organizations’ #MSExchange #Exchange #EntraID #Hybrid #ActiveDirectory #SMTP #MSExchangeSummit

Me holding my speaker badge in blue with the text "Exchange Summit 2026" at the top. In black letters on white bar the name Dave Stork. At the bottom a yellow bar with in red Speaker written. In the background a view over Würzburg.

Würzburg! I am in you!
Feel free to follow me on socials, and if you are here in person and have questions or want to talk: feel free to do so! (Unless I'm working on my deck 🤔😉)

#MSExchange #Exchange #MSExchangeSummit #mvpbuzz

Notes From the Field: Finding and Remediating EWS App Usage Before Retirement | Microsoft Community Hub We wanted to share some tips on how to find out details of EWS usage in your tenant.  

Notes From the Field: Finding and Remediating EWS App Usage Before Retirement

techcommunity.microsoft.com/blog/exchang...

#MSExchange #EWS #AppUsage

Promotional poster for Exchange Summit 2026 featuring Dave Stork and his talk on IAM and Exchange in hybrid organizations. Event dates: February 24–25, 2026 in Würzburg. Background includes email icons and a laptop with Dave’s photo.

I'll be talking about "IAM and Exchange: Untangling frenemies in Hybrid organizations". Follow me for updates!

#IAM #Identity #MSExchange #Hybrid #Entra #Microsoft365 #MVPBuzz #MSExchangeSummit

Promotional poster for Exchange Summit 2026 featuring Dave Stork and his talk on IAM and Exchange in hybrid organizations. Event dates: February 24–25, 2026 in Würzburg. Background includes email icons and a laptop with Dave’s photo.

This week I'm taking time off from my projects at #Rubicon. Today I'm traveling and on Tuesday and Wednesday I will be joining my friends and peers at the Exchange Summit 2026 in Würzburg, Germany!

#IAM #Identity #MSExchange #Hybrid #Entra #Microsoft365 #MVPBuzz #MSExchangeSummit

Migrating Personal Distribution lists (Contact Groups) code from EWS to the Microsoft Graph API Personal Distribution Lists (also known as Contact Groups) have been a long-lived feature in both Outlook and Exchange.

Migrating Personal Distribution lists (Contact Groups) code from EWS to the Microsoft Graph API
#Microsoftgraph #MSExchange #Microsoft365 #ExchangeOnline #MVPBuzz glenscales.substack.com/p/migrating-...

Promotional graphic for Workplace Ninjas Denmark 2026 featuring the event logo, session title “Mastering Mailflow: Strategies to Protect Your Organization,” the date and time “Friday, 20 February 2026, 10:45,” and a circular headshot of speaker Dave Stork. The website “wpninjas.dk” appears in the bottom right corner.

This Friday I will online speaking at Workplace Ninjas Denmark 2026 with the session "Mastering Mailflow: Strategies to Protect your Organization"

For more information and free registration: www.meetup.com/wpninjasdk/e...

#SMTP #Security #Mail #MSExchange #Microsoft365

Deprecation of the -Credential Parameter in Exchange Online PowerShell | Microsoft Community Hub Exchange Online PowerShell -Credential parameter will be deprecated soon.  

Support for the -Credential parameter will be removed from new Exchange Online PowerShell versions released after June 2026.

#MSExchange #ExchangeOnline #Security

techcommunity.microsoft.com/blog/exchang...

Released: February 2026 Exchange Server Security Updates | Microsoft Community Hub We have released Security Updates for Exchange Server SE. Exchange Server 2019 and 2016 ESU updates only.  

Released: February 2026 Exchange Server Security Updates
techcommunity.microsoft.com/blog/exchang...

#MSExchange #Security

Migrating EWS GetUserConfiguration and SetUserConfiguration operations to the Microsoft Graph TLDR Microsoft has released a new userConfiguration endpoint in the Microsoft Graph Beta, which serves as a plug-in replacement for existing EWS UserConfiguration operations.

Migrating EWS GetUserConfiguration and SetUserConfiguration operations to the Microsoft Graph open.substack.com/pub/glenscal... #MicrosoftGraph #MSExchange #Microsoft365 #MVPBuzz

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

Updated Exchange Online SMTP AUTH Basic Authentication Deprecation Timeline | Microsoft Community Hub We wanted to provide the updated Exchange Online SMTP AUTH Basic Authentication Deprecation Timeline.

Read more: techcommunity.microsoft.com/blog/exchang...
#SMTP #MSExchange #Security #Authentication

Updated Exchange Online SMTP AUTH Basic Authentication Deprecation Timeline | Microsoft Community Hub We wanted to provide the updated Exchange Online SMTP AUTH Basic Authentication Deprecation Timeline.

Several hours ago the #MSExchange Team posted an update on the #SMTP AUTH Basic #Authentication timeline. To summarize: the original date of disabling the option of March 2026 is now delayed to H2 2027 for existing tenants. Newly created tenants will have to deal with this from December 2026.

Exchange Online Public Folder Data and Retention Questions | Microsoft Community Hub We wanted to answer some Exchange Online public folder data and retention questions.  

Great information about Public Folder data and retention in Exchange Online.

#MSExchange #ExchangeOnline #PublicFolders #Retention

techcommunity.microsoft.com/blog/exchang...

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

No Exchange Server Security Updates for January 2026 | Microsoft Community Hub We are not releasing any Exchange Server Security Updates for January 2026.  

FYI, no SUs or other security releases for Exchange Server SE (or 2016/2019 customers in the ESU program) this month.

#MSExchange #Security

techcommunity.microsoft.com/blog/Exchang...

Work hours and locations now available in Microsoft Graph One of the best early Christmas presents Microsoft delivered in the Microsoft Graph is the ability to set work hours and locations.

Work hours and locations now available in Microsoft Graph open.substack.com/pub/glenscal... #MSExchange #MicrosoftGraph #MVPBuzz

Local Move Requests in Exchange Online – Why They’re Not Supported | Microsoft Community Hub We wanted to explain why using Local Move Requests in Exchange Online is not a good idea as a general practice.  

PSA: Microsoft does not support local move requests in Exchange Online. This article explains why that is.

#MSExchange #MailboxMoves

techcommunity.microsoft.com/blog/exchang...

Exchange Online canceling the Mailbox External Recipient Rate Limit | Microsoft Community Hub The Mailbox External Recipient Rate Limit in Exchange Online is being canceled.  

FYI, Microsoft is indefinitely cancelling the Exchange Online Mailbox External Recipient Rate Limit - techcommunity.microsoft.com/blog/exchang...

#MSExchange #ERR #Announcement

Top 3 Myths about Exchange Server Subscription Edition Over the last few months, several myths about Exchange Server Subscription Edition (SE) have been circulating online. From what I have seen, the top 3 myths are: Exchange Server SE includes new featur...

Busting the Top 3 Myths about Exchange Server Subscription Edition www.linkedin.com/pulse/top-3-...

#MSExchange #ExchangeSE #Myths

Day 24 of #ITAdvent. And this concludes yet another run. I hope you found some usefull tips, I had a nasty cold so that might have had an impact. In any case, happy holidays and see you in the next year! And yes, I haven't forgotten that #MSExchange and Start-of-authority blog post ;-)

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.  

PSA: EWS block enforcement for Kiosk/Frontline SKUs has been moved back to the end of June xf.ms/NoEWSEnforced #MSExchange #Microsoft365

Exchange Server SE Licensing, Part II Since posting my previous article about licensing and product keys in Exchange Server SE, I’ve received a ton of follow-up questions. Many of them were public, and I answered them publicly.

Since posting my previous article about licensing and product keys in Exchange Server SE, I’ve received a ton of follow-up questions. So, here's Part II.

www.linkedin.com/pulse/exchan...

#MSExchange #Licensing

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...