Authentication per service

["Linux Corporativo" <linuxcorporate@gmail.com>]

Hi guys,

I'm new at this list and with OpenLDAP.

I intend to set up an OpenLDAP server. I know I can register my
users and they respective passwords.

Well, one thing is authentication, permission another.

Suppose I have users A, B, C and D, and services MAIL and PROXY.

My question is: How to give permission to A user to MAIL only, B user
to MAIL and PROXY and D user to PROXY only, since my users/password
base is unique ?

Thanks to all..