on the client machine can you run (may have to ins...
# general
b
on the client machine can you run (may have to install mosquitto-clients)
mosquitto_pub -t hello -m world -d -h <fqdn of server> -p 8883 --cafile /root/certs/root.pem --cert /root/certs/client.pem --key /root/certs/client.key