ASPForums.Net RSS Feedhttp://www.aspforums.net/Handlers/RSS.ashxLatest additions to the content that appears on ASPForums.Net(c) 2019 www.aspforums.com. All rights reserved.SMTP Error: The server response was: 5.7.0 Must issue a STARTTLS command first<p>Hi rani,</p> <p>You need to set <strong>EnableSsl</strong>&nbsp;property of SmtpClient class object to true.</p> <p>Gmail uses secure channel for sending emails and you need to enable SSL security while sending emails through your application.</p> <p>Then you need to <strong>Turn On</strong> the&nbsp;Less Secure Apps setting in your account.</p> <p>For more details refer below article.</p> <h1 class="header"><a title="GMAIL Error: The SMTP server requires a secure connection or the client was not authenticated'a" href="https://www.aspsnippets.com/Articles/GMAIL-Error-The-SMTP-server-requires-a-secure-connection-or-the-client-was-not-authenticated.aspx">GMAIL Error: The SMTP server requires a secure connection or the client was not authenticated</a></h1>https://www.aspforums.net:443/Threads/111692/SMTP-Error-The-server-response-was-570-Must-issue-a-STARTTLS-command-first/https://www.aspforums.net:443/Threads/111692/SMTP-Error-The-server-response-was-570-Must-issue-a-STARTTLS-command-first/Thu, 25 Jul 2019 00:41:07 GMT