On 28 September 2012 06:29, Ryan Novosielski <span dir="ltr"><<a href="mailto:novosirj@umdnj.edu" target="_blank">novosirj@umdnj.edu</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Xymon 4.2.3 here still. For some reason, smtps doesn't test properly.<br></blockquote><div><br></div><div>From my tests, that server is not listening on port 587, or is being blocked by a firewall/router. But perhaps access is restricted.</div>
<div><br></div><div>Assuming port 587 is open to you, you can test the SSL negotiation using openssl:</div><div><br></div><div>$ openssl s_client -connect <a href="http://mail.umdnj.edu:587">mail.umdnj.edu:587</a> </dev/null</div>
<div><br></div><div>This should show you certificate details. If it doesn't then there was no (valid) SSL handshake.</div><div><br></div><div>At the very least, you should be able to connect with telnet:</div><div><br>
</div><div>$ telnet <a href="http://mail.umdnj.edu">mail.umdnj.edu</a> 587 </dev/null</div><div><br></div><div>This should show "Connected" and then immediately "Connection closed". If not, then you have a more elementary problem. If you get "Connection refused" then the service is probably not running. If you get a timeout, then there is probably a firewall/router blocking your packets.</div>
<div><br></div><div>Cheers</div><div>Jeremy</div><div><br></div></div>