Step 1: Login to webmail using below URL.
https://webmail.oryon.net
Step 2: Go to settings in the right top corner
Step 3: Under Incoming Emails, select Auto-Reply tab.
Step 4: Set the status to ON and then enter the auto-reply message.
Step 5: If you wish, you can set time duration for this auto-reply message.
Step 6: Click SAVE option.
Now the Auto-Reply will be setup successfully.