mosquitto.conf

pid_file /var/run/mosquitto.pid

persistence true
persistence_location /var/lib/mosquitto/

log_dest file /var/log/mosquitto/mosquitto.log

include_dir /etc/mosquitto/conf.d

listener 8883 0.0.0.0
protocol mqtt

#Update this to fit your own file location
cafile /etc/mosquitto/certs/ca-cert.pem
keyfile /etc/mosquitto/certs/server-key.pem
certfile /etc/mosquitto/certs/server-cert.pem

require_certificate true
use_identity_as_username true
allow_anonymous false

listener 1883 localhost
protocol mqtt