Why every new order I get this message in my server email:
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:

[email protected]
host aspmx.l.google.com [64.233.163.26]
SMTP error from remote mail server after RCPT TO:<[email protected]>:
550-5.1.1 The email account that you tried to reach does not exist. Please try
550-5.1.1 double-checking the recipient's email address for typos or
550-5.1.1 unnecessary spaces. Learn more at
550 5.1.1 https://support.google.com/mail/?p=NoSuchUser c9si302856lfs.122 - gsmtp