Unofficial Microsoft 365 Changelog - Exchange Online
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Published April 4, 2025Service
- Exchange Online
Message SummaryM365 Changelog: DNS Provisioning Change – Apr 4, 2025
MC1048624 – We’re making some changes to DNS provisioning of A records for all new Accepted Domains provisioned after July 1st, 2025. Between July 1st and August 1st, 2025, Microsoft will gradually switch provisioning of all A records for new Accepted Domains into the new subdomains under mx.microsoft. Microsoft is doing this to reduce the...
Impact Summary- Major Update
- Admin Impact
- User Impact
- Feature Update
- New Feature
- Retire
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Published March 7, 2025Service
- Exchange Online
- Microsoft 365 Apps
- Microsoft 365 for the web
Message SummaryM365 Changelog: (Updated) Microsoft Outlook: Review and update work hours and location in the My Day pane – Mar 7, 2025
MC877318 – Updated March 7, 2025: Microsoft has updated the rollout timeline below. Thank you for your patience. Coming soon to Microsoft Outlook: Work hours and location information will be available in the My Day pane in Outlook. Users will be able to update their Work Hours and Location information from My Day and also see who...
Impact Summary- Major Update
- Admin Impact
- User Impact
- Feature Update
- New Feature
- Retire
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Published March 7, 2025Service
- Exchange Online
- Microsoft 365 Apps
- Microsoft 365 for the web
Message SummaryM365 Changelog: (Updated) Microsoft Outlook: Quickly see who is in the office based on work hours and location – Mar 7, 2025
MC862229 – Updated March 7, 2025: Microsoft has updated the rollout timeline below. Thank you for your patience. Coming soon for Microsoft Outlook: If users have enabled work hours and location in Settings, their colleagues will be able to more quickly see who plans to be in the office with a new calendar feature. This message applies...
Impact Summary- Major Update
- Admin Impact
- User Impact
- Feature Update
- New Feature
- Retire
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Published March 10, 2025Service
- Exchange Online
Message SummaryM365 Changelog: Microsoft Exchange Online: New limit for dynamic distribution groups (DDGs) – Mar 10, 2025
MC1024399 – Updated March 10, 2025: Microsoft has updated the content. Thank you for your patience. Microsoft will soon introduce a new limit on dynamic distribution groups (DDGs) in Microsoft Exchange Online. Each organization will be limited to a maximum of 3,000 DDGs. After this limit is reached, admins will need to remove existing DDGs...
Impact Summary- Major Update
- Admin Impact
- User Impact
- Feature Update
- New Feature
- Retire
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Published March 10, 2025Service
- Exchange Online
Message SummaryM365 Changelog: New Exchange Online Tenant Outbound Email Limits – Mar 10, 2025
MC1023294 – Updated March 10, 2025: Microsoft has updated the content. Thank you for your patience. To reduce the risk of misuse and abuse of Exchange Online resources and ensure service availability for all users, we’ll soon introduce new tenant-level outbound email limits, known as the Tenant External Recipient Rate Limit or TERRL. The TERRL...
Impact Summary- Major Update
- Admin Impact
- User Impact
- Feature Update
- New Feature
- Retire
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Published March 7, 2025Service
- Exchange Online
- Microsoft Teams
Message SummaryM365 Changelog: Microsoft Teams: Enhanced compliance and security in voicemail messages – Mar 7, 2025
MC987329 – Updated March 7, 2025: Microsoft has postponed this release to ensure the proper customer experience. The rollout timeline has been updated below. Thank you for your patience. Microsoft is pleased to inform you that it will roll out two improvements to enhance compliance and security for voicemail messages in Microsoft Exchange. This change...
Impact Summary- Major Update
- Admin Impact
- User Impact
- Feature Update
- New Feature
- Retire
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Published March 4, 2025Service
- Exchange Online
Message SummaryM365 Changelog: New Exchange Online Tenant Outbound Email Limits – Mar 4, 2025
MC1023294 – To reduce the risk of misuse and abuse of Exchange Online resources and ensure service availability for all users, we’ll soon introduce new tenant-level outbound email limits, known as the Tenant External Recipient Rate Limit or TERRL. The TERRL restricts the number of external recipients a tenant can send email to per day....
Impact Summary- Major Update
- Admin Impact
- User Impact
- Feature Update
- New Feature
- Retire
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Published February 25, 2025Service
- Exchange Online
- Microsoft 365 Apps
Message SummaryM365 Changelog: New Microsoft Outlook for Windows: Review your organization’s configured management policies – Feb 25, 2025
MC1015904 – This message applies only to new Outlook for Windows and has no impact on classic Outlook for Windows. This is a reminder for administrators to review the policies your organization has configured to manage new Microsoft Outlook for Windows. The new article Map classic Outlook policies to new Outlook explains how key policies you may...
Impact Summary- Major Update
- Admin Impact
- User Impact
- Feature Update
- New Feature
- Retire
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Published February 14, 2025Service
- Exchange Online
Message SummaryM365 Changelog: (Updated) Reject multiple From addresses (P2 From headers) without a Sender header – Feb 14, 2025
MC886603 – Updated February 14, 2025: Microsoft is proactively opting tenants out of the rollout that were detected as sending high volumes of emails exhibiting multiple From addresses without a Sender address header. These exempted senders will only be able to send emails exhibiting multiple From addresses without a Sender address header to recipients belonging...
Impact Summary- Major Update
- Admin Impact
- User Impact
- Feature Update
- New Feature
- Retire
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Published February 13, 2025Service
- Exchange Online
- Microsoft 365 Apps
Message SummaryM365 Changelog: (Updated) Microsoft Outlook for iOS and Android: Choose fonts while composing – Feb 13, 2025
MC847877 – Updated February 13, 2025: Microsoft has updated the rollout timeline below. Thank you for your patience. Coming soon for Microsoft Outlook for iOS and Android: Microsoft will add support for choosing fonts while composing emails. Microsoft will also improve support for fonts while reading emails. This message is associated with Microsoft 365 Roadmap...
Impact Summary- Major Update
- Admin Impact
- User Impact
- Feature Update
- New Feature
- Retire
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Published February 12, 2025Service
- Exchange Online
- Microsoft 365 Apps
- Microsoft 365 for the web
Message SummaryM365 Changelog: (Updated) Microsoft Outlook: Notifications will be batched in the Notifications pane – February 12, 2025
MC942814 – Updated February 12, 2025: Microsoft has updated the rollout timeline below. Thank you for your patience. Coming soon to new Microsoft Outlook for Windows desktop and Outlook for the web: Notifications will be batched in the Notifications pane. Batches are groups of cards in the user’s Notification pane separated by subject. Items from the same email thread,...
Impact Summary- Major Update
- Admin Impact
- User Impact
- Feature Update
- New Feature
- Retire
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Published January 23, 2025Service
- Exchange Online
- Microsoft 365 Apps
Message SummaryM365 Changelog: New Microsoft Outlook for Windows: Sharing Word, Excel, and PowerPoint local files through email – Jan 23, 2025
MC882252 – Updated January 23, 2025: Microsoft has updated the rollout timeline below. Thank you for your patience. Coming soon to new Microsoft Outlook: Users will be able to share Microsoft Word, Microsoft Excel and Microsoft PowerPoint files stored on their device (not stored in a cloud like Microsoft OneDrive) from new Outlook for Windows....
Impact Summary- Major Update
- Admin Impact
- User Impact
- Feature Update
- New Feature
- Retire
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