title: Email address verification shows wrong addresses as correct
body: <p>I have a question regarding email verification in (Visual) C#.</p>
  
  <p>I searched the web and found several methods to do so. E.g. here:</p>
  
  <ul>
  <li><a href="https://stackoverflow.com/questions/6449367/c-sharp-email-address-validation">C# Email Address validation</a></li>
  <li><a href="https://stackoverflow.com/questions/1365407/c-sharp-code-to-validate-email-address">C# code to validate email address</a></li>
  </ul>
  
  <p>Strangely both of them seem to let emails like "ex.as@asd,com" pass (notice the comma instead of a point).</p>
  
  <p>However, if I try to send an email via <code>SmtpClient</code> object I get an exception because the given email address has the wrong format.</p>
  
  <p>Any ideas?</p>