'Warrant canaries': a subtle hint that your email provider is compromised

So does that AussieNanny law apply only when the canary is present on a server actually based in Australia or having a .AU domain?

Seems like this is a great op for someone to setup a canary system in Belize or, even better, a canary system on a .onion domain. I would check there before visiting a sensitive site if there were such a system.