Handling send email error on Laravel 5

I am trying to send email confirmation to user on local but I got this error.

Swift_TransportException in AbstractSmtpTransport.php line 383:
Expected response code 250 but got code "521",
with message "521 5.2.1 MUST COMPLETE IMAGE PUZZLE BEFORE SENDING.
PLEASE GOTO http://ift.tt/1JiA9tq

How can i catch this error like that to a messenger and return for client. please give some sugestion. Thank

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