Checking client side port is open

Please can you advise on an issue with our xmpp server.

We wanted a way for our clients to check if 5222 is open. I thought that they should be able to use http://xmpp.kanbanmps.com:5222/ but the responce times out. I would expect to see something like this t least:

This XML file does not appear to have any style information associated with it. The document tree is shown below.

<stream:stream xmlns=“jabber:client” xmlns:stream=“http://etherx.jabber.org/streams” id=“none” from=“ekm4insight.com” version=“1.0”>

stream:error

</stream:error>

</stream:stream>

can anyone help? I also tested it at IMtrends and it says that server > server streams are not open.

Many thanks,