Posted inExchange Online
Reject multiple From addresses (P2 From headers) without a Sender header [MC886603]
Starting October 15th, we're going to start gradually dropping messages that have multiple From addresses (also known as P2 From headers) without a Sender header from being sent via Exchange Online.
![Reject multiple From addresses (P2 From headers) without a Sender header [MC886603] 1 Reject multiple From addresses (P2 From headers) without a Sender header [MC886603]](https://mwpro.co.uk/wp-content/uploads/2024/08/pexels-pixabay-290660-1024x683.webp)
![Copilot for Microsoft 365 available for self-service purchase [MC886385] 2 Copilot for Microsoft 365 available for self-service purchase [MC886385]](https://mwpro.co.uk/wp-content/uploads/2024/08/pexels-eye4dtail-134402-1024x683.webp)
![Microsoft PowerPoint: QuickStarter feature retires starting October 2024 [MC884762] 3 Microsoft PowerPoint: QuickStarter feature retires starting October 2024 [MC884762]](https://mwpro.co.uk/wp-content/uploads/2024/08/pexels-tara-winstead-8386365-1024x683.webp)
![ActiveX will be disabled by default in Microsoft Office 2024 [MC884011] 4 ActiveX will be disabled by default in Microsoft Office 2024 [MC884011]](https://mwpro.co.uk/wp-content/uploads/2024/08/pexels-jenna-hamra-248942-804416-1024x683.webp)
![Exchange Properties Limits addition [MC884017] 5 Exchange Properties Limits addition [MC884017]](https://mwpro.co.uk/wp-content/uploads/2024/08/pexels-googledeepmind-17484975-1024x683.webp)
![Microsoft 365 admin center will support continuous access evaluation (CAE) [MC884015] 6 Microsoft 365 admin center will support continuous access evaluation (CAE) [MC884015]](https://mwpro.co.uk/wp-content/uploads/2024/08/pexels-pachon-in-motion-426015731-18204592-1024x683.webp)