I've been going crazy trying to figure this out.  I have inherited an Umbraco site and need to make a change to the subdomin that the web site is using.  It has been setup as a multilingual web site.  The two subdomains that is uses are http://en.*** and http://es.***.  If an indiviual browses to http://www.* the site loads in English and then links go to http://en.***.

I have a requirement to get rid of "en." and replace it with "www." to allow for search engine optimization.

However, I can not figure out how the subdomain is being set.  I've gone through all the config, xslt and scripting files trying to find anything that makes sense. I've checked for URL rewrites but I can't find anything there either. 

I can load up Umbraco under the www. address and see that the documents show a Link to Document setting that matches to en. This makes me believe that there has to be a setting somewhere.

I can manually change the URL once navigating to en. to www. and then the www. appears to stick everywhere but the main header.  This main header comes from an xslt file but it doesn't seem to contain anything that I can identify is setting it to the other subdomain.

Thanks!