301 Redirect Windows server query

Hope i got the right section if anyones got a sec:

if i set up a subdomain against a domain or a site (but not using a landing page as such)to use for marketing and do a 301 redirect to an affiliate url...what will show as the referrer to the affiliate company/merchant, my subdomain or the page where the user saw the ad?

any thoughts much appreciated

 

The page where they saw the ad I believe. If you want to test it, instead of linking to the affiliate company page on the redirect, link to a page that has this in it to see what referer it shows.

<?php
echo $_SERVER['HTTP_REFERER'];
?>

PHP:

 

Thanks, will give that a try.