36ccb1df_Set_SenderIdConfig__Description
[Parameter] InternalMailEnabled [Required] Optional [Type] System.Boolean [Description] 
Valid input for the InternalMailEnabled parameter is $true or $false. The default setting is $false. When the InternalMailEnabled parameter is set to $true, all messages from authenticated sender domains that belong to authoritative domains in your enterprise are passed through the Sender ID agent for processing.
Set-SenderIdConfig
Description