I run into the same problem and figured out that subversion looks for valid "default" root CA certs within /etc/ssl/certs/ca-certificates.crt if you set "ssl-trust-default-ca = yes".
To trust your own CA (and add it to the ca-certificates.crt), proceed with the following steps: mkdir /usr/share/ca-certificates/example.com cp Example_CA.crt /usr/share/ca-certificates/example.com/. echo "example.com/Example_CA.crt" >> /etc/ca-certificates.conf update-ca-certificates -v Afterwards subversion accepts the server certificate. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/474633 Title: svn client ignores the setting ssl-trust-default-ca To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/subversion/+bug/474633/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs