Hi Jeremy,
well, finally it's working on my old 10.6.8 Mac, it seems so, an updated c-ares library was available and brew was also udated, and so I was able to install mosquitto.
I've fired up a trigger (just for testing, have no device yet, fighting with NodeMCU's...) and sent messages from a Mac MQTT client. Works well! Thx!!!
But: is it possible to somehow forward the message content, let's say via Prowl or something else? In some situations it should be handy.
Or am I missing something?
Yassi