ORCA.102: Advanced Spam filter options are turned off.
| ID | ORCA.102 |
| Severity | Low |
| Suite | ORCA |
| Product | Defender |
| Related products | Exchange Online |
| Feature | Anti-spam |
| Security area | Email and collaboration protection |
| Resource type | Policy |
| User impact of fixing | Low |
| Effort to fix | Low |
| Framework controls | nist-800-53-r5:SI-8 Spam Protection |
| Reads from | Exchange Online |
What this checks and how to fix it
Section titled “What this checks and how to fix it”Enabling one or more of the ASF settings is an aggressive approach to spam filtering that can often cause false positives. The effectiveness of these settings in reducing spam has severely declined over the years. Use them with caution.
Remediation action
Section titled “Remediation action”Turn off Advanced Spam filter (ASF) options in Anti-Spam filter policies.
Related Links
Section titled “Related Links”- Microsoft 365 Defender Portal - Anti-spam settings
- Recommended settings for EOP and Microsoft Defender for Office 365 security
Mito check, based on ORCA. Author: soulemike. Open-source licences.
Open-source licences. CIS Benchmark material © Center for Internet Security, Inc.; CISA SCuBA baselines are public domain (CC0).
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