title: Expected response code 250 but got code "550", with message "550 5.7.1 Relaying denied "
body: <p>I am getting this error Expected response code 250 but got code &quot;550&quot;, with message &quot;550 5.7.1 Relaying denied  &quot; when I try using mailgun and laravel 7 to send emails. But I do not know what to do</p>