MQTT cannot connect

1

Hello all,

since yesterday I have the problem that my MQTT connection is not able to connect to the broker. I already removed the mosquitto add on, also the MQTT integration. After playing around a bit with installing / removing it worked again.
Today I made a reboot, and I have the same error again. Maybe somebody has an idea how to fix it?

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Thank you in advance!

2

Maybe an additional Info: it seems to be some Problem with DNS…when I use the IP address of the Broker directly it is working!
I also saw that pinging hostnames does Not work…When I add a nameserver to /etc/resolv.conf it is better…anyways Not every Integration can resolv addresses…