LeLutin: I don't see apt objecting to installing on a fresh vm. Are you sure you don't have an outdated public key imported? See https://docs.aegirproject.org/quick-start/
helmo42[m]: hmm I've tried running apt update on other servers and they indeed worked fine. so there must be some derelict key on that machine I was testing yesterday. I'll see what I can find, thanks for you time checking this
