Hello! I'm just new to OTRS and I'm trying to configure it for our needs. As our customers should be authenticated using LDAP and internal OTRS database, I realised that it isn't possible to use multiple Authentication Modules for customers. So I've done a very simple AuthModule called Kernel::System::CustomerAuth::Multiple which uses multiple AuthModules (like DB, LDAP, Radius, ...) to authenticate customers. Usage is very simple: Copy Multiple.pm to Kernel/System/CustomerAuth/Multiple.pm. You'll find it at http://www.fh-trier.de/~beckerr/OTRS-CustomerAuth/Multiple.pm To use CustomerAuth::DB and CustomerAuth::LDAP modify your Config.pm like this: $Self->{'Customer::AuthModule'} = 'Kernel::System::CustomerAuth::Multiple'; $Self->{'Customer::AuthModule::Multiple::Modules'}='Kernel::System::CustomerAuth::DB Kernel::System::CustomerAuth::LDAP'; So CustomerAuth::Multiple tries to authenticat users using CustomerAuth::DB first and, if this fails, it trys CustomerAuth::LDAP. Regards, Ralf