Subject: Delivery Status Notification (Failure)
From: "Mail Delivery Subsystem" <[email-masked]>
To: <[email-masked]>
Date: Mon, 25 Sep 2017 23:03:14 -0700 (PDT)

** Address not found **

Your message wasn't delivered to [email-masked] because the address couldn't be found. Check for typos or unnecessary spaces and try again.

Learn more here: https://support.google.com/mail/?p=NoSuchUser

The response was:

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 l5sor3509305qti.95 - gsmt