Unfortunately, the ! character at the beginning the the line in ca- certificates.conf is just for blacklisting ca certificates from being imported into the system store, it's not really a backlist that can be used by a crypto library.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1647285 Title: SSL trust not system-wide To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ca-certificates/+bug/1647285/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs