CmdID / PowerShell / Cmdlets / Get
Get-DkimSigningConfig
Use the Get-DkimSigningConfig cmdlet to view the DomainKeys Identified Mail (DKIM) signing policy settings for domains in a cloud-based organization. Exchange PowerShell reference
From the Exchange PowerShell reference 1 parameter Its page in the reference
Parameters
-IdentityThe Identity parameter specifies the DKIM signing policy that you want to view.