title: System.Net.Mail.SmtpClient.Send() Timeout SmtpException
body: <p>I want to Send <code>Email</code> via <code>GMail</code></p>
  
  <p>I can send Email via Gmail at home</p>
  
  <p>but <code>System.Net.Mail.SmtpClient.Send()</code> return <code>Timeout SmtpException</code> in company's closed network with same code</p>
  
  <p>I'm going to ask network administrator about this.</p>
  
  <p>Network administrator don't know about address/port information that gmail use so I have to know what address/port need to check before asking I try to connect <code>[address:smtp.gmail.com, port:587]</code> with <code>telnet</code> and successfully connected.</p>
  
  <p>Are there more to check/open a network address/port?</p>