Each domain in your GroupWise system must be assigned a GWIA for outbound messages. A domain’s assigned GWIA handles all outbound messages sent by the domain’s users.
If your GroupWise system includes only one GWIA, that GWIA must be assigned to all domains and is used for all outbound messages.
If your GroupWise system includes multiple GWIAs, you must decide which GWIA you want to be responsible for outbound messages for each domain. You must select one GWIA as your system’s default GWIA, but you can override the default at each domain.