title: I Cannot send mail via smtp telnet in linux
body: <p>I tried sending mail in telnet  in linux as</p>
  
  <pre><code>telnet smtp.gmail.com 587
  </code></pre>
  
  <p>but it returns the error</p>
  
  <pre><code>telnet: connect to address to remote host: Connection timed out
  telnet: Unable to connect to remote host: Connection timed out
  </code></pre>
  
  <p>Any one please help</p>