We activated DNSSec on our myonlineportal.net domain. If you feel that something isn't working as expected, don't hesitate to contact us.
We are aware about the Pro's and Con's of DNSSec and adapt our monitoring to detect abuse usage much more faster. And we like to use this as test before we activate this on all other domains.
Currently DNSSec is just activated for the domain myonlineportal.net.
Supplement: Due to the config changes ddns domains below dyndns.myonlineportal.de are not working from yesterday until now (2017-03-09 20:30). We apologise for the trouble caused.