Forum Discussion
Classic Exchange Admin Center loses Spam Filter Control
Apparently yesterday MS removed the "Protection" center from the Exchange admin center. This was moved to the Microsoft 365 Defender page. Under the original section you could add multiple email addr...
You can always use PowerShell, especially when adding entries in bulk.
Set-HostedContentFilterPolicy default -BlockedSenders @{add="user@domain.com","user2@domain.com"}