My log MQTT… My ip raspberry is 192.168.0.9
[15:10:27] INFO: Setup mosquitto configuration
[15:10:27] INFO: No local user available
[15:10:27] INFO: Initialize Hass.io Add-on services
[15:10:27] INFO: Initialize Home Assistant discovery
[15:10:27] INFO: Start Mosquitto daemon
1587733827: mosquitto version 1.6.3 starting
1587733827: Config loaded from /etc/mosquitto.conf.
1587733827: Loading plugin: /usr/share/mosquitto/auth-plug.so
1587733827: |-- *** auth-plug: startup
1587733827: ├── Username/password checking enabled.
1587733827: ├── TLS-PSK checking enabled.
1587733827: └── Extended authentication not enabled.
1587733827: Opening ipv4 listen socket on port 1883.
1587733827: Opening ipv6 listen socket on port 1883.
1587733827: Opening websockets listen socket on port 1884.
1587733827: Opening ipv4 listen socket on port 8883.
1587733827: Opening ipv6 listen socket on port 8883.
1587733827: Opening websockets listen socket on port 8884.
1587733828: Warning: Mosquitto should not be run as root/administrator.
1587733828: New connection from 192.168.0.43 on port 1883.
[INFO] found Ezio on Home Assistant
1587733829: New client connected from 192.168.0.43 as shellyswitch25-98F4ABF3ED6D (p2, c1, k60, u'Ezio').
1587733829: New connection from 192.168.0.65 on port 1883.
1587733829: New connection from 192.168.0.31 on port 1883.
1587733829: New connection from 192.168.0.48 on port 1883.
1587733829: New connection from 192.168.0.59 on port 1883.
1587733829: New connection from 192.168.0.44 on port 1883.
1587733829: New client connected from 192.168.0.65 as shelly1pm-BA1595 (p2, c1, k60, u'Ezio').
1587733829: New client connected from 192.168.0.31 as shellyrgbw2-BC0835 (p2, c1, k60, u'Ezio').
1587733829: New client connected from 192.168.0.48 as shellyswitch25-109D31 (p2, c1, k60, u'Ezio').
1587733829: New client connected from 192.168.0.59 as shellyem-B9E769 (p2, c1, k60, u'Ezio').
1587733829: New client connected from 192.168.0.44 as shellyswitch25-109D4F (p2, c1, k60, u'Ezio').
1587733830: New connection from 192.168.0.9 on port 1883.
1587733830: Socket error on client <unknown>, disconnecting.
1587733831: New connection from 192.168.0.9 on port 1883.
1587733831: New client connected from 192.168.0.9 as homeassistant (p2, c1, k60, u'Ezio').
1587733833: New connection from 192.168.0.45 on port 1883.
1587733833: New client connected from 192.168.0.45 as tapp-gr-camera (p2, c1, k30, u'Ezio').
1587733834: New connection from 192.168.0.22 on port 1883.
1587733834: New connection from 192.168.0.25 on port 1883.
1587733834: New client connected from 192.168.0.22 as Bagno_Piccolo (p2, c1, k30, u'Ezio').
1587733834: New client connected from 192.168.0.25 as Studio (p2, c1, k30, u'Ezio').
1587733834: New connection from 192.168.0.42 on port 1883.
1587733834: New connection from 192.168.0.46 on port 1883.
1587733834: New client connected from 192.168.0.42 as tapp-pi-sala (p2, c1, k30, u'Ezio').
1587733834: New client connected from 192.168.0.46 as Tapp_Studio (p2, c1, k10, u'Ezio').
1587733834: New connection from 192.168.0.23 on port 1883.
1587733834: New connection from 192.168.0.41 on port 1883.
1587733834: New client connected from 192.168.0.23 as Cameretta (p2, c1, k30, u'Ezio').
1587733834: New client connected from 192.168.0.41 as tapp-gr-sala (p2, c1, k30, u'Ezio').
1587733834: New connection from 192.168.0.29 on port 1883.
1587733834: New connection from 192.168.0.21 on port 1883.
1587733834: New connection from 192.168.0.64 on port 1883.
1587733834: New client connected from 192.168.0.29 as Bagno_Grande (p2, c1, k30, u'Ezio').
1587733834: New client connected from 192.168.0.21 as Intensita_Luci (p2, c1, k30, u'Ezio').
1587733834: New client connected from 192.168.0.64 as PR_POW_5 (p2, c1, k30, u'Ezio').
1587733834: New connection from 192.168.0.63 on port 1883.
1587733834: New connection from 192.168.0.24 on port 1883.
1587733834: New client connected from 192.168.0.63 as PR_POW_4 (p2, c1, k30, u'Ezio').
1587733834: New client connected from 192.168.0.24 as Camera_Matrim (p2, c1, k30, u'Ezio').
1587733834: New connection from 192.168.0.27 on port 1883.
1587733834: New client connected from 192.168.0.27 as Luce_Esterna_Bagno (p2, c1, k30, u'Ezio').
1587733834: New connection from 192.168.0.28 on port 1883.
1587733834: New connection from 192.168.0.60 on port 1883.
1587733834: New connection from 192.168.0.35 on port 1883.
1587733834: New connection from 192.168.0.61 on port 1883.
1587733834: New client connected from 192.168.0.28 as Veranda (p2, c1, k30, u'Ezio').
1587733834: New client connected from 192.168.0.60 as PR_POW_1 (p2, c1, k30, u'Ezio').
1587733834: New client connected from 192.168.0.35 as Pulsante (p2, c1, k30, u'Ezio').
1587733834: New client connected from 192.168.0.61 as PR_POW_2 (p2, c1, k30, u'Ezio').
1587733834: New connection from 192.168.0.62 on port 1883.
1587733834: New connection from 192.168.0.26 on port 1883.
1587733834: New client connected from 192.168.0.62 as PR_POW_3 (p2, c1, k30, u'Ezio').
1587733834: New client connected from 192.168.0.26 as Terrazzo (p2, c1, k30, u'Ezio').
1587733834: New connection from 192.168.0.58 on port 1883.
1587733835: New client connected from 192.168.0.58 as LUCI (p2, c1, k30, u'Ezio').