Steps to reproduce
- Install the latest UCS qcow2 appliance on qemu-kvm 1:3.1+dfsg-8+deb10u4. (qemu version is not important)
- Setup to use 208.67.222.222 / 192.168.0.1 as name servers.
- Setup email to use smtp server on local network. (This triggers DNS issues)
Details, posted on ownCloud’s forum, but they directed me here: