Solution
1. Login to your control panel (https://www.yourdomain.com:2082)
2. Click on the “Mail” link. This will display “Mail Manager Main Menu” screen.
3. Click on “Auto-responders“
4. Click on “Add Auto Responder“
5. Enter the “Email Address” to send the auto response
6. Enter the “From” name, (for example, my company)
8. Enter a “Subject“, (for example, thank you)
9. Enter your message in the “Body“
10. Click on “Create/Modify” to create the auto responder.