If a third-party party filtering solution is used, the solution SHOULD offer services comparable to the native spam filtering offered by Microsoft.

Why This Matters

Organizations that deploy third-party email filtering solutions often assume they provide complete protection. If these solutions lack core capabilities equivalent to Microsoft’s native spam filtering, they can leave your environment vulnerable to advanced phishing, malware, and spam attacks. Without comparable defenses, attackers may bypass your primary security layer and reach user inboxes.

What Aether365 Checks

This check verifies whether your third-party filtering solution offers spam protection features that are at least comparable to Microsoft’s native Exchange Online Protection (EOP). It appears in the Aether365 dashboard under the microsoft-365 security checks category.