I receive an error message Mail delivery failed: returning message to sender This message was created automatically by mail delivery software. **A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:** But, I can send email by hand. sounds like something is wrong with the script! Website: [url removed, login to view] I would like this fixed, and the changing of the email subjects.... From Invoice to: Notification of Payment Received. email subject, Receipt to: Receipt for your Payment All bids on this project are for email error fix & the changing of the email subjects!