Hi @felix_
We will recommend you to use HUE Query Processor which provide same functionality as that of DAS.
However if you want to keep using DAS, below information may help you:
The LDAP implementations tested by Cloudera are the ones in the below documentation (MS Active Directory, OpenLDAP, or OpenDJ)
https://docs.cloudera.com/cdp-private-cloud-base/7.1.6/using-das/topics/das-user-authentication-ldap...
You may use below LDAP Search command to check if the configuration used are correct or not
Example, Searching for a specific users (peter):
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ldapsearch -x -H ldap://sme-2012-ad.support.com:389 -D "test1@SUPPORT.COM" -w hadoop12345! -b "ou=users,OU=hortonworks,dc=support, dc=com" "(&(objectclass=user)(cn=peter))"