Creating an auto responder from cPanel.
1. Login to your cPanel (http://domainname.com/cpanel)
2. Next, you will enter to cPanel page and may click on Auto Responders.
3. Select the respective subdomain that you want the Autoresponder to apply to.
If you want to apply to your whole domain, select All Domains.
Click Add Autoresponder.
4. Then, you will enter Auto Responders page and may create the Auto Responders. Once done, click Create.