FreeRadius - ActiveDirectory authentication multiple domains

[Ricardo Esteves]

Hi,

I need to setup a radius server in order to authenticate users against 
ActiveDirectory.

But i've got one problem, my activedirectory has multiple domains, for 
example:

company.com
branch1.company.com
branch2.company.com
branch3.company.com

Anyone has any idea on the best way to accomplish this task? Multiple 
LDAP configurations?

For example with multiple ldap settings is there anyway to preprocess 
the autentication request with a script to find which domain the user 
belongs and then use the corresponding ldap configuration to that domain?

Best regards,
Ricardo Esteves.