Each domain has a malware filter policy applied to it, or the default policy is being used.

Why This Matters

Without a malware filter policy applied to every domain, your organization is exposed to malicious attachments and links that can compromise user mailboxes and spread across your network. A missing or improperly configured policy creates a gap in your email security posture, allowing threats to bypass your defenses. IT administrators must ensure consistent malware protection across all domains to prevent successful attacks.

What Aether365 Checks

This check verifies that each domain in your Microsoft 365 tenant has a malware filter policy applied, either through an explicit assignment or by using the default policy. In the Aether365 dashboard under microsoft-365 checks, it flags domains that lack any malware policy coverage.