title: Redirect *.domain.com & domain.com to www.domain.com
body: <p>I've got an Search Engine Optimisation problem where users are able to access my site by specifying any sub-domain. This is causing duplicate page issues with SEO.</p>
  
  <p>For example if a user mis-types 'www' then posts a link on a forum, google is crawling 'wwww.domain.com'. Furthermore, google is also crawling 'domain.com'.</p>
  
  <p>I need a way of forcing the site to always redirect to 'www.domain.com' regardless of how the user accesses the site.</p>
  
  <p>Is it possible to do this in the web.config file? If not, how else can I achieve this?</p>
  
  <p>Cheers, Curt.</p>