title: Get sent mail error
body: <p>Is there any way to get sent error from the smtp to check if the mail is sent successfully?</p>
  
  <pre><code>var smtpClient = new SmtpClient("SmtpServer");
                  smtpClient.SendCompleted += new SendCompletedEventHandler(SendCompletedCallback);
  smtpClient.SendAsync(mail, userId);
  </code></pre>
  
  <p>The errors I am looking for are: mail can't be deliver because the mail address not exists, mail box full etc...</p>
  
  <p>Regards,
  Meir.</p>