Hey Xavier,

I'm pretty new to the RPi world but I'm having trouble with your key server on RPi 3B+ running Raspian Stretch.

I previously had it running via a manual install, but I couldn't get the CPU temp to show up no matter what I tried (I Also experienced this on a Pi 2b+) . Thought I'd revisit the repo install incase I had better luck.

dirmngr installs fine, then when I attempt the next step:
sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 2C0D3C0F

I get the following:

Executing: /tmp/apt-key-gpghome.hqUuGFbYgf/gpg.1.sh --recv-keys --keyserver keyserver.ubuntu.com 2C0D3C0F
gpg: keyserver receive failed: Server indicated a failure 

Any help would be greatly appreciated thank you

Lint