We have a server in our DMZ, which already had an SSL certificate, but it has expired. Now we would like to start with this server to switch to Let’s Encrypt.
I also successfully imported the certificate via win-acme. Unfortunately the site is not accessible from outside (my workstation / smartphone) via https (xyz.domain.com).
I access the URL (xyz.domain.com) from my workstation and no successful SSL connection can be established. Under the details of this rejection i can find the old certificate (just why?).
However, when I call this url on the server (remote desktop session xyz.domain.com), a secure connection can be established.
Unfortunately, I have no idea what to look for. I tried a lot today, but found nothing that would even begin to describe my problem.
Does anyone have any ideas or ideas for me?