The SMTP server requires a secure connection or the client was not authenticated error while sending email from asp.net
<p>I am trying to send an email from my asp.net application, the function worked fine on my machine, but when I deployed it on the webserver, I got the error :The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required,</p>

<p>Any one can help? Thanks</p>
