We tried, but could not find /doku.php?id=doku.php.faq:systemadmin:how_to_install_a_certificate_signed_by_a_recognized_certificate_authority&do=login§ok=afc00c5514e8c7fa7512568e5a7e3876
But hey, you don't have to leave empty handed!
Here are some things you can try instead: