The receive connector '{0}' has been enabled to allow open relay to anonymous users. If enabled, and the server is Internet-facing, ...

The receive connector '{0}' has been enabled to allow open relay to anonymous users. If enabled, and the server is Internet-facing, the remote connection range should be specified, or anonymous relay should be disabled. Click on the link 'get help fixing this issue' in the actions pane located on the right side of the screen for assistance.