CmdID / PowerShell / Cmdlets / Get
Get-SiteMailboxProvisioningPolicy
Use the Get-SiteMailboxProvisioningPolicy cmdlet to view site mailbox provisioning policies. Exchange PowerShell reference
From the Exchange PowerShell reference 2 parameters Its page in the reference
Parameters
-IdentityThe Identity parameter specifies the site mailbox provisioning policy 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.