The user markus@kl-dfki.de is saved in the mySql database as user markus on Server B.
So i activate module suffix to check for the realm and then it checks this user in the database.
This works, but the server answers only, that he knows "markus", not "markus@kl-dfki.de".

What should I do to configure my radiusserver to recive the realm of "markus"?

THX