Running your own server infrastructure you will sooner or later run into the issue of server certificates. There are certainly plenty of companies out there who would solve this for you. However, that has the potential to quickly drain your wallet. Therefore we thought there may be other solutions - and yes, there are. Contacting the local CAcert community was a great idea as we found excellent support and a highly professional assurance process to get our company assured. As an assured company we can now issue our own server certificates. Many thanks to all of the guys supporting us! In case you are in the same situation, CAcert is a good point to start with.