The deliveryconfig CLIcommand controls primary IP interface for all maildelivery. // this command just in CLI, cannot setting from GUI.
If you want match part of outgoing mail,and control the delivery interface. You can add an outgoingmail policy and use outgoing content filter with “Deliverfrom IP Interface” action. To be honest, if you have an outgoingmail policy matched all outgoing mails. And the policy apply a contentfilter using “Deliver from IP Interface” action without condition, thebehavior same as “deliveryconfig” in CLI.