EDIT: I was trying to connect through http:// instead of httpS://. My mistake
Sorry for reopening this case, but I have exactly followed your steps @speedy, but 9091 does not let me in.
1. vim /usr/local/etc/openfire/openfire.xml
2. replaced "9090¨ with -1
3. wrote and exit the openfire.xml file (with ESC + wq)
4. restarted the server with the following command: /usr/local/etc/rc.d/openfire restart
5. made the conclusion xmpp.[ourDomain].nl:9091 does not work and gives the following error: The compound was reinitialized