Delivery Status Notification (Failure)

Delivery to the following recipient failed permanently: yatsinova@gmail.com
Technical details of permanent failure:
550-5.1.1 The email account that you tried to reach does not exist. Please try double-checking the recipient’s email address for typos or unnecessary spaces. For more information, go to support.google.com/mail/?p=NoSuchUser 2adb3069b0e04-55b749aba2asi702058e87.483 – gsmtp