Recently I moved a feed to FeedBurner. The problem was that I wanted to redirect old users to the new feed url, but in the same time allow FeedBurner to visit the old feed in order to crawl it.
The solution to this is pretty simple. Just open your feed's php file and put this in the beginning :
Code:
<?php if ( strpos($_SERVER['HTTP_USER_AGENT'], 'FeedBurner')===false ){ header ( 'HTTP/1.1 301 Moved Permanently' ); header ( 'Location: http://feeds.feedburner.com/NewFeedURL'); exit; } ?>