title: Could not connect smtp server on port 25
body: <p>I'm using a windows 7 PC</p>
  
  <p>When I try to test an smtp connection through telnet giving the command:</p>
  
  <pre><code>telnet smtp.gmail.com 25
  </code></pre>
  
  <p>It shows a message:</p>
  
  <pre><code>could not establish connection to host, on port 25: connection failed"
  </code></pre>
  
  <p>How do I get my PC to establish a connection with the smtp host on port 25?</p>
  
  <p>I checked the possibility of a Firewall blocking the port and also try using the telnet command on ports 465 or 587.</p>