Authentication and authorization

[Kai Wang]

Greetings.

Our account information is saved in ldap database. Every user has an eID 
as "firstname.lastname" and a uID as less than 8 alphanumeric 
characters. We are considering to migrate our email to cyrus. I know the 
difference between authentication and authorization. I want to 
authenticate a user by the eID and grant authorization ID of uID. We run 
Redhat  Linux. Can anybody tell me how to do this?

Thanks in advance

-- 
Kai Wang