Exchange 2007 Spam filter Whitelisting

We’ve recently upgraded our Exchange 2003 server to Exchange 2007.  There’s a lot of new and updated features in this version.  The Anti-Spam features seem to be working very good but are catching some legitimate emails.  I found the following shell commands for adding email addresses or whole domains to the white lists to keep them from getting blocked. 
If you are like I was and didn’t have a clue what shell commands meant, open the Exchange Management Shell from the start menu.  It’s a command prompt for doing various command line based tasks.  You can perform pretty much everything you can normally do from the gui interface from a command line.  This makes creating scripts to perform repetative tasks a snap.

I found these commands here.