I use Pihole for DNS resolution on my home network. When I enable the 'use DNSSEC' option in the settings I can no longer get to nzbget.net or forum.nzbget.net. Pihole sees the DNS for these domains as bogus. You can see some issues at these links:
I am not sure how to fix the problem on the outside server. When I notice an update for nzbget while I'm at work I'll disable DNSSEC in the pihole, update and reenable.
I am posting here in case anyone runs into the issue.