ORCA.108 - DKIM signing is set up for all your custom domains.
Overview
DKIM signing can help protect the authenticity of your messages in transit and can assist with deliverability of your email messages.
Remediation action
Set up DKIM signing to sign your emails.
Related Links
- Microsoft 365 Defender Portal - DKIM
- Use DKIM to validate outbound email sent from your custom domain in Office 365
Test Metadata
| Field | Value |
|---|---|
| Test ID | ORCA.108 |
| Severity | Medium |
| Suite | ORCA |
| Product | Defender |
| Related products | Exchange Online |
| Feature | Email authentication |
| Area | Email and collaboration protection |
| Resource type | Domain |
| User impact | Low |
| Implementation cost | Medium |
| MITRE ATT&CK | T1566 Phishing, T1684.002 Email Spoofing |
| Supports controls | nist-800-53-r5:SC-8 |
| PowerShell test | Test-ORCA108 |
| Services | ExchangeOnline |
Source
- Test:
tests/orca/Test.ORCA.108.ps1 - Documentation:
tests/orca/Test.ORCA.108.md