Here’s a handy tip that I just found. There are a multitude of ways to redirect your WordPress blog temporarily for maintenance. But I recently found myself in a situation where a client needed to be redirected to another site, not just to a holder page (like most plugins do).

Here are the steps:

1. Create a file: “wp-content/maintenance.php”. Anything you put here will be displayed for logged-out users. (Thanks to Matt Sivel who pointed this out).
2. Once inside that file, copy and paste this code: (don’t forget the php tags)

header( 'Location: http://www.redirectedSite.com' ) ;

Now your WordPress blog should be forwarding to the new location when you’re not logged in, but staying on your site when you do login.