Safe Redirect Manager is a HTTP redirect manager for WordPress. An easy-to-use UI allows you to redirect locations to new URL’s with the HTTP status codes of your chosing. The plugin uses the wp_safe_redirect function which only allows redirects to whitelisted hosts for security purposes.
More info: https://github.com/tlovett1/Safe-Redirect-Manager
Download: http://wordpress.org/extend/plugins/safe-redirect-manager/