Specify Scope for SMTP and X.400 Connectors
You can use scope to control whether messages from a routing group can travel through the connector. The scope of an SMTP or X.400 connector determines the connector's availability to servers within your organization. You can make a connector available to your entire organization or you can restrict its use to a routing group; for example, you may specify a certain connector for a routing group that includes Los Angeles and Tokyo, but not allow other servers in your company to use the connector because it's more expensive.
To specify an SMTP or X.400 connector's scope: