MQTT Binding will not work :(

Hello together.

Im new on OPENHAB and i try to get a mqtt connection to work.

my OPENHAB2 is running on my Synology DS214+ NAS, mosquitto too.

i have some ESP sensors and there sending to the Mosquitto:

1490542786: Sending PINGRESP to ESP8266Client
1490542800: Received PUBLISH from ESP8266Client (d0, q0, r0, m0, 'temp', ... (5 bytes))
1490542800: Received PUBLISH from ESP8266Client (d0, q0, r0, m0, 'hum', ... (5 bytes))
1490542800: Received PUBLISH from ESP8266Client (d0, q0, r0, m0, 'light', ... (2 bytes))
1490542801: Received PINGREQ from ESP8266Client
1490542801: Sending PINGRESP to ESP8266Client

so. my Broker works well.


17:31:37.866 [INFO ] [el.core.internal.ModelRepositoryImpl] - Loading model 'meine.items'
17:31:42.502 [INFO ] [el.core.internal.ModelRepositoryImpl] - Loading model 'esp.sitemap'
17:31:45.343 [INFO ] [.dashboard.internal.DashboardService] - Started dashboard at /start
17:31:48.709 [INFO ] [basic.internal.servlet.WebAppServlet] - Started Basic UI at /basicui/app
17:31:49.270 [INFO ] [assic.internal.servlet.WebAppServlet] - Started Classic UI at /classicui/app
17:31:49.568 [INFO ] [arthome.ui.paper.internal.PaperUIApp] - Started Paper UI at /paperui
17:31:50.673 [INFO ] [ui.habmin.internal.servlet.HABminApp] - Started HABmin servlet at /habmin
17:31:51.107 [INFO ] [panel.internal.HABPanelDashboardTile] - Started HABPanel at /habpanel
17:31:51.146 [DEBUG] [org.openhab.binding.mqtt            ] - BundleEvent STARTING - org.openhab.binding.mqtt
17:31:51.254 [DEBUG] [.binding.mqtt.internal.MqttActivator] - MQTT binding has been started.
17:31:51.255 [DEBUG] [org.openhab.binding.mqtt            ] - BundleEvent STARTED - org.openhab.binding.mqtt
17:31:51.310 [DEBUG] [ng.mqtt.internal.MqttEventBusBinding] - MQTT: Activating event bus binding.
17:31:51.324 [DEBUG] [org.openhab.binding.mqtt            ] - ServiceEvent REGISTERED - {org.osgi.service.event.EventHandler, org.osgi.service.cm.ManagedService}={event.topics=openhab/*, service.pid=org.openhab.mqtt-eventbus, component.name=org.openhab.binding.mqtt.eventbus, component.id=195, service.id=325, service.bundleid=211, service.scope=bundle} - org.openhab.binding.mqtt
17:31:51.509 [DEBUG] [org.openhab.binding.mqtt            ] - ServiceEvent REGISTERED - {org.openhab.model.item.binding.BindingConfigReader, org.openhab.binding.mqtt.MqttBindingProvider}={component.name=org.openhab.binding.mqtt.genericbindingprovider, component.id=196, service.id=326, service.bundleid=211, service.scope=bundle} - org.openhab.binding.mqtt
17:31:51.541 [DEBUG] [binding.mqtt.internal.MqttItemConfig] - Loaded MQTT config for item 'temperature' : 1 subscribers, 0 publishers
17:31:51.571 [DEBUG] [binding.mqtt.internal.MqttItemConfig] - Loaded MQTT config for item 'humidity' : 1 subscribers, 0 publishers
17:31:51.585 [DEBUG] [binding.mqtt.internal.MqttItemConfig] - Loaded MQTT config for item 'MQTT_Switch_Command' : 0 subscribers, 2 publishers
17:31:51.592 [DEBUG] [binding.mqtt.internal.MqttItemConfig] - Loaded MQTT config for item 'MQTT_Switch_State' : 1 subscribers, 0 publishers
17:31:51.612 [DEBUG] [org.openhab.binding.mqtt            ] - ServiceEvent REGISTERED - {org.osgi.service.event.EventHandler}={event.topics=openhab/*, component.name=org.openhab.binding.mqtt.MqttItemBinding, component.id=197, service.id=328, service.bundleid=211, service.scope=bundle} - org.openhab.binding.mqtt
17:32:09.973 [INFO ] [smarthome.event.ItemCommandEvent    ] - Item 'MQTT_Switch_Command' received command ON
17:32:09.987 [INFO ] [marthome.event.ItemStateChangedEvent] - MQTT_Switch_Command changed from NULL to ON
17:32:09.983 [DEBUG] [inding.mqtt.internal.MqttItemBinding] - Publishing command ON to licht
17:32:10.849 [INFO ] [smarthome.event.ItemCommandEvent    ] - Item 'MQTT_Switch_Command' received command OFF
17:32:10.856 [DEBUG] [inding.mqtt.internal.MqttItemBinding] - Publishing command OFF to licht
17:32:10.859 [INFO ] [marthome.event.ItemStateChangedEvent] - MQTT_Switch_Command changed from ON to OFF
17:32:36.725 [INFO ] [smarthome.event.ItemCommandEvent    ] - Item 'MQTT_Switch_Command' received command ON
17:32:36.730 [DEBUG] [inding.mqtt.internal.MqttItemBinding] - Publishing command ON to licht
17:32:36.732 [INFO ] [marthome.event.ItemStateChangedEvent] - MQTT_Switch_Command changed from OFF to ON

meine.items

Number temperature "temp [%.1f]" {mqtt="<[mosquitto:temp:state:default]"}
Number humidity "humidity [%.1f%%]" {mqtt="<[mosquitto:hum:state:default]"}
Switch MQTT_Switch_Command  "MQTT Command" {mqtt=">[mosquitto:licht:command:ON:LichtAn],>[mosquitto:licht:command:OFF:LichtAus]"}
String MQTT_Switch_State    "MQTT State [%s]"   {mqtt="<[mosquitto:licht:state:default]"}

esp.sitemap

sitemap esp label="ESP"
{
 Frame label="MQTT" {
 Text item=temperature icon="temperature"
 Text item=humidity
 }

Frame {
                Switch item=MQTT_Switch_Command
                Text item=MQTT_Switch_State
      }
}

mqtt.cfg

mosquitto.url=tcp://localhost:1883
mosquitto.clientId=OPENHAB2
mosquitto.qos=0
mosquitto.retain=false
mosquitto.async=true

mqtt.config

mosquitto.async="true"
mosquitto.clientId="OPENHAB2"
mosquitto.qos="0"
mosquitto.retain="false"
mosquitto.url="tcp://localhost:1883"
service.pid="org.openhab.mqtt"

mosquitto.log is no entry like “connection from OPENHUB2” or so… OPENHAB2 mqtt will not connect to the Mosquitto server

but nothing happens… whats wrong with my setup?