This policy setting controls whether e-mail forms that originate from the user's local intranet can be opened. If you enable ...

This policy setting controls whether e-mail forms that originate from the user's local intranet can be opened.            If you enable this policy setting, users will not be able to open e-mail forms from the local intranet. Instead, these forms will need to be published and opened in InfoPath.            If you disable or do not configure this policy setting, forms that originate from the local intranet can be opened.