LDAPs SuiteCRM 8 RC not working

Hi @ All,

I have tried to Setup LDAPs with our Windows AD Server without sucess.
I have generated a Certificate and put it into thr default directory /etc/pki/tls/certs the same with the AD CA Certificate of our internal CA into ca.pem.
I have one Question what do I have to input into the “Encryption Key” field I guess without this it will not work.

Please give me a feedback or ideas of how to implement this correctly.