thanks for your reply. based of what you have provided me you can construct a rule like the one below:

Message is received from member or group > reply using a specific template and forward to member or group.

This seems to be the only way you can construct a message and send it automatically. note this process is to use a static message response. Meaning if you want a different response each time, you will have to manually forward the message from your inbox.

Hope this helps