InformationReview and unblock users who have been blocked for sending too many messages marked as spam/bulk.
Users who are found on the restricted users list have a high probability of having been compromised. Review of this list will allow an organization to remediate these user accounts, and then unblock them.
NOTE: Nessus has not performed this check. Please review the benchmark to ensure target compliance.
SolutionTo review the report, use the Microsoft 365 Admin Center:
Click Security to open the Security portal.
Under Email & collaboration navigate to Review.
Click Restricted Users.
Review alerts and take appropriate action (unblocking) after account has been remediated.