ORCA is a project to help Office 365 tenant administrators validate their anti-spam and anti-malware settings against recommendations from Microsoft. ORCA is installed as a PowerShell module with just one cmdlet. After running Get-ORCAReport, you’ll have a report containing recommendations and observations about your configuration.
- Login to Exchange online with powershell
- Install the Orca module
Install-Module -Name ORCA
- Get the Orca report