Just added another customer to Google Apps and for some reason their Google Sites page displayed a Forbidden message. I initially thought it was simply some issue with DNS resolution. A couple days later when it persisted, I opted to do a little more digging (since DNS issues should self resolve after 24 hours ~max). I noticed that when I browsed to their Sites admin page (https://sites.google.com/a/domain.com), there was a Forbidden message there as well (meaning it was never DNS related).
- Login: mail.google.com with your Google Apps admin account.
- Click the Settings tab.
- Click Sites from the Services list.
- Click Uninstall Sites under the Uninstall service section of the General tab.
- Follow the onscreen prompts …