If you use Firefox and have to connect to URLs that contain non-standard ports 
in them (such as https://webmail.nwoca.org:563/), you will find that the newly 
released Firefox 2.0 blocks them for security reasons. Jeff Sankovich found a fix on the web. 
 
In the address bar of Firefox 2.0, type: 
 
about:config 
 
and press enter/return. 
 
Right-click on the list of Firefox preference strings and choose New-String. 
 
Name the string: 
 
network.security.ports.banned.override 
 
Click OK 
 
Next, (in the case of NWOCA) set the value to 563 and click OK. 
 
That's it. 
 
Good luck. 
 
CH