Spring security authentication builder incorrect LDAP postfix

Question

I am working on a Spring Boot project that handles security through Spring Boot's security module and authenticates users through an Active Directory using LDAP.

However, every single time I try to log in it uses the incorrect baseDN. The baseDN I want would be 'dc=wimpi,dc=net', but what I get is 'dc=wimpi,dc=net/dc=example,dc=com'. I am having troubles figuring out where the postfix comes from as it is not mentioned anywhere in my code. I am passing the baseDN as part of the url and apply it in the following piece of code:

@Override
    protected void configure(AuthenticationManagerBuilder builder) throws Exception{
        builder.ldapAuthentication()
            .contextSource()
            .url(properties.getLdapURL())
            ...
}

Kind regards,