I run mosquitto as a HAOS addon. mqtt:/core-mosquitto:1883 has been the host I've used internally from other addons until now without any problem, however I now have the need to connect to the mosquitto broken from a different machine.
I tryed specifying <HA-IP>:1883 but I get connection refused. I suspect that HAOS doesn't by default expose mosquittos port to the outside.
Any info on how I can configure that?