Prevent record creation through Outlook connector?

Does anyone have any suggestions on preventing records from being created through the SugarCRM Outlook connector? We are on 7.x and using version 2.4.0 of the Outlook connector.

I want to prevent users from creating Leads, Contacts, etc from within Outlook by using this connector. All I can come up with so far is issuing a Die in a before save logic hook if certain conditions are not met (like no address on a lead). However, I know this would be the wrong approach.

Any suggestions are appreciated. Thanks!