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Exchange Online recipient limits
Hello all, For one of our user I get the notification: "User xxxx has sent 999 internal and 0 external recipients in the last day, exceeding their Internal limit." I have found this article on ...
Finally found it. It is not in Exchange Online, but in Defender. The Anti-spam outbound policy is limiting the number of internal messages per hour.
Now looking for a solution; spliting the number of mails over several days or modify the anti-spam policy...
Hi there,
looks like its related to antispam policies.
Have you checked out https://security.microsoft.com/antispam
Choose "Anti-Spam Outbound Policy" (if you didnt create an own one).
Edit the policy and you'll see internal rate limits.
Eventually you'll need security administrator to edit.
BR Schnittlauch
Edit: was a few seconds too late :(
Nevertheless, thanks for your reply and confirming the solution