CmdID

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New-X400AuthoritativeDomain

Use the New-X400AuthoritativeDomain cmdlet to create and specify the X.400 authoritative domain for the organization. Exchange PowerShell reference

From the Exchange PowerShell reference 6 parameters Its page in the reference

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Parameters

6 in the Exchange PowerShell reference
-NameThe Name parameter specifies the unique name for the X.400 authoritative domain.
-X400DomainNameThe X400DomainName parameter specifies the X.400 namespace, which can only include the X.400 organizational components.
-Confirm, -cfThe Confirm switch specifies whether to show or hide the confirmation prompt.
-DomainControllerThe DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory.
-WhatIf, -wiThe WhatIf switch shows what the command does without making any changes.
-X400ExternalRelayThe X400ExternalRelay parameter specifies authoritative domain an external relay domain.