CmdID

CmdID / PowerShell / Cmdlets / Get

Get-ExternalInOutlook

Use the Get-ExternalInOutlook cmdlet to view the configuration of external sender identification that's available in Outlook, Outlook for Mac, Outlook on the web, and Outlook for iOS and Android. Exchange PowerShell reference

From the Exchange PowerShell reference 1 parameter Its page in the reference

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Parameters

1 in the Exchange PowerShell reference
-IdentityThe Identity parameter specifies the GUID of the external sender identification object that you want to view.