Connect error: SASL Authentication failed. No known authentication mechanisims

When trying to write my first XMPP client using Smack (4.1.0-beta1) (running against OpenFire 3.9.3) i keep getting the following error:

org.jivesoftware.smack.SmackException: SASL Authentication failed. No known authentication mechanisims

I tried all kinds of username/password settings but no luck so far. When connecting with Pidgin the connection seems ok.

Any clue what i am missing? 

I also tried all possible scenario's for the servicename and host..

XMPPTCPConnectionConfiguration config = XMPPTCPConnectionConfiguration.builder()

                .setUsernameAndPassword("admin", "admin")

                .setServiceName("localhost")

                .setHost("localhost")

                .setSecurityMode(ConnectionConfiguration.SecurityMode.disabled)

                .setPort(5222)

                .build();

        XMPPTCPConnection connection = new XMPPTCPConnection(config);

        try {

            connection.connect();

            connection.login(); // fails!!!

            connection.disconnect();

        } catch (SmackException e) {

            e.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();        } catch (XMPPException e) {

            e.printStackTrace();

        }