CmdID / PowerShell / Cmdlets / Get
Get-X400AuthoritativeDomain
Use the Get-X400AuthoritativeDomain cmdlet to view the configuration information for the X.400 authoritative domains configured in your organization. Exchange PowerShell reference
From the Exchange PowerShell reference 2 parameters Its page in the reference
Parameters
-IdentityThe Identity parameter specifies a string value for the X.400 authoritative domain.-DomainControllerThe DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory.