This is cross-posted from my original Jelly Bean and Google Now thread as the "fix" remains buried in the original thread.
Courtesy of DCIS Steve via Google Mobile Help Forum
Google Now is supporting hosted email domains. It requires the following steps...
Go to your Apps dashboard (manage your domain) and click upon settings on the top right.
Click upon Mobile under Services on the menu to the left
Make sure your're in the ORG Settings tab and scroll all the way down to Android settings.
Enable Google Now and save.
Took a few minutes an everything started working. Sweet.
FYI
chmod