ohh I see, I had the idea that test-proxy was the actual dns host but its the internal given name of the webserver external app.
ok I have now
RewriteRule (.*) http://VanguardiaWeb/$1
and its not giving a log error any more. and its doing the proxy on the first request, but links are still being as the back end webserver
are there aditional instructions to give to replace this links?