ORCA.100 - Bulk Complaint Level threshold is between 4 and 6.
Overview
The differentiation between bulk and spam can sometimes be subjective. The bulk complaint level is based on the number of complaints from the sender. Decreasing the threshold can decrease the amount of perceived spam received, however, too low may be considered too strict.
Remediation action
Set the Bulk Complaint Level threshold to be 6.
Related Links
- Bulk Complaint Level values
- Microsoft 365 Defender Portal - Anti-spam settings
- Recommended settings for EOP and Microsoft Defender for Office 365 security
Test Metadata
| Field | Value |
|---|---|
| Test ID | ORCA.100 |
| Severity | Low |
| Suite | ORCA |
| Product | Defender |
| Related products | Exchange Online |
| Feature | Anti-spam |
| Area | Email and collaboration protection |
| Resource type | Policy |
| User impact | Low |
| Implementation cost | Low |
| MITRE ATT&CK | None |
| Supports controls | nist-800-53-r5:SI-8 |
| PowerShell test | Test-ORCA100 |
| Services | ExchangeOnline |
Source
- Test:
tests/orca/Test.ORCA.100.ps1 - Documentation:
tests/orca/Test.ORCA.100.md