I have an odd occurrence trying to set up LDAP authentication from a Bitnami
Redmine VM appliance. I have set up the LDAP authentication and some users
can log in and other cannot (all of them are in the same context).

I am using the attributes as follows

Login: cn
First Name: givenname
Last name: sn
Email: mail

I am unsure of what the difference is between the users that work and the
users that do not work. Is there and easy way to find out?