Forum Discussion
How to block a user automatically if he sends more than 50 mails within 60 minutes
How do I block a user automatically if he sends more than 50 mails within 60 minutes from his Exchange Online Account? The content (size, number of attachments, etc.) of the mail does not matter. The...
You should be able to do that with a Cloud App Security activity policy, see https://support.office.com/en-us/article/Activity-policies-and-alerts-in-Office-365-Cloud-App-Security-367f25d3-10a0-4a91-bdae-70ebb7a79c98 for the instructions.