Delivery Status Notification (Failure)

Address not found Your message wasn't delivered to salesyifaei@gmail.com because the address couldn't be found. Check for typos or unnecessary spaces and try again. LEARN MORE

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 v11sor7030865edb.25 - gsmtp