56 GroupWise 7 Administration Guidenovdocx (en) 11 December 2007Default Routing Domain: If a domain’s MTA cannot resolve a message’s address, themessage is routed to this default domain’s MTA. The default domain’s MTA can then beconfigured to handle the undeliverable messages. This might involve routing the message toanother GroupWise domain or to an Internet address (by performing a DNS lookup). Browse toand select the GroupWise domain you want to use as the default routing domain.Force All Messages to this Domain: This option applies only if you select a default routingdomain. Select this option to force all messages to be routed through the default routing domainregardless of the links you have configured for your GroupWise system’s domains.MTAs Send Directly to Other GroupWise Systems: Select this option if you want all MTAsin your GroupWise system to perform DNS lookups and route messages out across the Internet.If you deselect this option, you can designate individual MTAs to perform DNS lookups androute messages to the Internet. For more information, see “Using Dynamic Internet Links” in“Connecting to GroupWise 5.x, 6.x, and 7.x Systems” in the GroupWise 7 Multi-SystemAdministration Guide.2 Click OK to save the changes.4.2.3 External Access Rights1 Click the External Access Rights tab to modify any of the following options:Allow External Busy Search: Select this option to enable users in other GroupWise systemsto perform Busy Searches on your GroupWise users’ Calendars.Allow External Status Tracking: Select this option to enable users in other GroupWisesystems to receive message status information (such as whether a message has been delivered,opened, and so on) when messages arrive in your GroupWise system.2 Click OK to save the changes.