IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
Identifies when a user has been restricted from sending email due to exceeding sending limits of the service policies per the Security Compliance Center.
Rule type: query
Risk score: 47
Runs every: 5 minutes
Searches indices from: now-30m (Date Math format, see also
Additional look-back time)
Maximum alerts per execution: 100
- Microsoft 365
- Continuous Monitoring
- Configuration Audit
Added (Elastic Stack release): 7.16.0
Rule authors: Austin Songer
Rule license: Elastic License v2
A user sending emails using personal distribution folders may trigger the event.
## Config The Microsoft 365 Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.
event.dataset:o365.audit and event.provider:SecurityComplianceCenter and event.category:web and event.action:"User restricted from sending email" and event.outcome:success
Framework: MITRE ATT&CKTM
- Name: Initial Access
- ID: TA0001
- Reference URL: https://attack.mitre.org/tactics/TA0001/
- Name: Valid Accounts
- ID: T1078
- Reference URL: https://attack.mitre.org/techniques/T1078/
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