title: smtp.live Could not send the e-mail - error: Mailbox unavailable. The server response was: 5.7.3 Requested action aborted; user not authenticated
body: <p>I saw all the other pages on stackoverflow that were about this problem and tried them but none of them worked.</p>
  
  <p>im doing a website as a project for school, and I want the users to send an e-mail for them to report problems in, but it always gives me that error.</p>
  
  <p>this is my code:</p>
  
  <pre><code>    protected void Sendbtn_Click(object sender, EventArgs e)
      {
      try
        {
  
          MailMessage mailMessage = new MailMessage();
          mailMessage = new     MailMessage("user@hotmail.com","my@hotmail.com");           
          mailMessage.Subject = "Problem from Gamer's Utopia";
          mailMessage.Body = this.msgtxt.Text;
          SmtpClient smtpClient = new SmtpClient(" smtp.live.com");
  
          smtpClient.EnableSsl = true;
          smtpClient.Send(mailMessage);
          Response.Write("E-mail sent!");
        }
      catch (Exception ex)
        {
          Response.Write("Could not send the e-mail - error: " + ex.Message);
        }
      }
  </code></pre>
  
  <p>I tried using authentication with username and password but it didnt work - unless I did it incorrectly.</p>