If you are hosting your business email with Google and access it using an email client like Outlook, chances are Google will freak out once in a while and put your Outlook in the endless loop of asking for your username and password, and rejecting them even if they are correct. It seems to happen after credentials provided by your email client fail to get you authenticated. I used to have this problem a lot when I checked my business email using Windows Mobile (Cingular 3125) smartphone. Since I switched to iPhone the problem went away, or so I thought. Since the information on how to fix this issue is not that easy to find, I made a simple page where you just enter your domain name and it will take you to the Google credentials unlock page, specific to your site.