In order to properly deploy ExchangeDefender, you'll need to make several changes on your network. An updated Deployment Guide for ExchangeDefender is now available that covers network configuration, MX Record, Outbound Smarthost, and IP restrictions.
ExchangeDefender recently added the ability for users to choose if a Distribution Group is Internal or External, see full documentation. To edit these settings, please visit your Service Manager, choose the company that you would like to manage, tap the Distribution Groups tab, and click Edit.
ExchangeDefender for Service Providers can manage and add new domains and organizations by logging into ExchangeDefender Admin portal, and clicking on the Management tab. To add a new domain simply click on the New Account Wizard button. For more information, please see SP Service Guide.