Each domain has a anti-spam policy applied to it, or the default policy is being used.

Why This Matters

Without a dedicated anti-spam policy applied to each domain, inbound messages may bypass critical spam filtering controls. This leaves your organization vulnerable to phishing, malware, and other email-borne threats that the default policy might not fully address. Ensuring every domain has an assigned policy maintains consistent protection across all custom email domains.

What Aether365 Checks

Aether365 verifies that every custom domain in your Microsoft 365 tenant has an anti-spam policy explicitly assigned or is protected by the default policy. This check appears in your Aether365 dashboard under the microsoft-365 category.