title: RewriteRule only works in one direction?
body: <p>This rewrite rule works.</p>
  
  <pre><code>RewriteCond %{HTTP_HOST} !^www\.example\.com$ [NC]
  RewriteRule ^(.*)$ http://www.example.com/$1 [R,L,QSA] 
  </code></pre>
  
  <p>This rewrite rule doesn't</p>
  
  <pre><code>RewriteCond %{HTTP_HOST} !^www\.example\.co\.uk$ [NC]
  RewriteRule ^(.*)$ http://www.example.co.uk/$1 [R,L,QSA]
  </code></pre>
  
  <p>The .co.uk is an alias in Plesk 11 for the .com. It's on Apache2 (API version 20051115). It has nginx in the mix too but I don't know the exact details as it's on shared hosting.</p>
  
  <p>It has been working for years but the host has altered the server config (without telling, grrr!) and broken the redirect. Firefox tells me that "The page isn't redirecting properly".</p>