Users may be receiving a "451 4.3.2 temporary server issue" error message when attempting to send or receive email through Outlook.
Some of the impacted service functions include, but may not be limited to:
- Sending and receiving email through Exchange Online, including notification emails from Microsoft Viva Engage.
- Collecting message traces may be delayed or fail.
- Searches within SharePoint Online and/or Microsoft OneDrive mail be delayed or fail to complete.
- Accessing the service portals, including Microsoft Purview, Microsoft Defender XDR, and the Microsoft 365 admin center.
