301 redirect not working

I made a subdomain, and I am trying to redirect a page from the original domain to the subdomain, with the same dir structure.

My original page is开发者_Python百科 this:

http://www.comehike.com/outdoors/alaska_hiking.php

I put this rule into the .htaaccess file under comehike.com/outdoors/ directory:

RewriteRule ^outdoors/alaska_hiking.php       http://hiking.comehike.com/outdoors/alaska_hiking.php [R,L]

But as you can see from visiting the original url, it doesn't redirect. Any idea why?

Thanks!

I use apache server.

That RewriteRule line works for me when I stick it in my .htaccess file, are you sure you have RewriteEngine On?