Check which Defender email policy wins

Tue, 13 Oct 2026 21:00:00 +0000

Changed a custom email protection policy and the user still gets the old behavior? Check which policy actually applies before changing more settings.

For the same protection type, Strict preset security policies take precedence over Standard presets. Those Strict and Standard presets also take precedence over custom policies. Setting a custom anti-spam policy to priority 0 won’t move it above a Strict or Standard preset that includes the same recipient.

Defender for Office 365 on Nathan McNulty

Check which Defender email policy wins