Sudo doesn't work on AD domain - RHEL8

Hello,

I have 2 servers connected to Active Directory.

On the servers, i configured /etc/sudoers.d/domain_admins with the following line :

%MySudoGroup@domain.tld       ALL=(ALL)       ALL

On the first server, it works perfeclty but not on the second.
I checked all the possible parameters (those i know) but i don't see any difference between the 2 servers.

On the first on, when i use sudo, it comes like this :

[sudo] password for 

On the second, it comes like

We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:

    #1) Respect the privacy of others.
    #2) Think before you type.
    #3) With great power comes great responsibility.

[sudo] password for :

On the second case, it says me that the password is incorrect.

What's wrong? All ideas are welcome.

Regards,

Bertrand