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Get-MalwareFilterRule

Use the Enable-MalwareFilterRule cmdlet to view malware filter rules in your organization. Exchange PowerShell reference

From the Exchange PowerShell reference 3 parameters Its page in the reference

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Parameters

3 in the Exchange PowerShell reference
-IdentityThe Identity parameter specifies the malware filter rule that you want to view.
-DomainControllerThe DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory.
-StateThe State parameter filters the results by enabled or disabled malware filter rules.