google SP & new users

[Daniel McDonald]

Hi,

We've setup our shibboleth IDP to use google as an SP.

We've setup admin & some user accounts for our domain through the google 
admin page. If I create an account for something like 
bill.smith at mydomain.edu on the google admin page, when I goto login to 
google and enter bill.smith at mydomain.edu it redirects me to the 
shibboleth login page and it authenticates that account with our AD as 
expected.

However if we have a user called jim.jones at mydomain.com in our AD, and I 
havent added it manually added it to google, if I try to login with that 
on google it says "Couldnt find your google account".

Is that how its supposed to work? I assumed google would work like our 
other SP's, any account in our AD could authenticate without having to 
add it to the SP's website/database/etc.

Thanks!
Dan