Connect with LDAPS

I only have an LDAPS server available (using Azure AD). I tried configuring like this:

    <entry key='ldap.enabled'>true</entry>
    <entry key='ldap.force'>true</entry>
    <entry key='ldap.url'>ldaps://ds.xxx.ch:636</entry>
    <entry key='ldap.base'>OU=AADDC Users,DC=xxx,DC=ch</entry>
    <entry key='ldap.idAttribute'>sAMAccountName</entry>
    <entry key='ldap.searchFilter'>(|(sAMAccountName=:login)(mail=:login))</entry>
    <entry key='ldap.adminGroup'>CN=Operations,OU=AADDC Users,DC=xxx,DC=ch</entry>
    <entry key='ldap.user'>CN=LDAPS BIND USER,OU=AADDC Users,DC=xxx,DC=ch</entry>
    <entry key='ldap.password'>xxxxx</entry>

However I don't see any outoing connection on the server over port 636. Is secure LDAP not supported?

Secure LDAP should be supported.

FYI:
https://www.traccar.org/forums/topic/ldap-over-starttls/
https://www.traccar.org/forums/topic/error-logging-ldap-connection/