reverse proxy for OWA 2010 - firts issue

["Andrea Gallazzi" <andrea.gallazzi@xxxxxxxx>]

Hi, 
I installed ubuntu server (latest) with squid 2.7. 

I am following this example config:
http://wiki.squid-cache.org/ConfigExamples/Reverse/OutlookWebAccess

but on first command  "https_port"  squid returns the error "unrecognired"

Where is the problem?

thanks