CmdID / PowerShell / Cmdlets / Enable
Enable-TransportRule
Use the Enable-TransportRule cmdlet to enable transport rules (mail flow rules) in your organization. Exchange PowerShell reference
From the Exchange PowerShell reference 5 parameters Its page in the reference
Parameters
-IdentityThe Identity parameter specifies the rule that you want to enable.-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.-ModeThe Mode parameter specifies how the rule operates after it's enabled.-WhatIf, -wiThe WhatIf switch shows what the command does without making any changes.