CmdID / PowerShell / Cmdlets / Get
Get-DynamicDistributionGroupMember
Use the Get-DynamicDistributionGroupMember cmdlet to view the calculated membership list that's stored on dynamic distribution group objects. Exchange PowerShell reference
From the Exchange PowerShell reference 4 parameters Its page in the reference
Parameters
-IdentityThe Identity parameter specifies the dynamic distribution group.-CredentialThe Credential parameter specifies the username and password that's used to run this command.-IncludeSoftDeletedObjectsThe IncludeSoftDeletedGroups switch specifies whether to include soft-deleted group members in the results.-ResultSizeThe ResultSize parameter specifies the maximum number of results to return.