How to legally sell in Australia while being based in another country?

[JK89]

Hello,

I am in the process of creating my first shop here in shopify.

I want to sell my product in Australia, however, I am based in Mexico.

Does anyone knows what do I need to do about tax collection so everything is legal and the Australian Taxation Office stays happy?
I have no way of getting an ABN (Australian Business Number) because I live in Mexico.

Surely there is people who sells in Australia and who lives in a country where getting an ABN is not possible.

Any ideas?

Thanks!
(Apologies if I chose the incorrect board to post this)