Client Certification Files

Hey guys,

I’m trying to use the mosquitto_pub, mosquitto_sub command line interfaces to publish/subscribe to device endpoints at

I’m not sure that I have correctly configured my .cert files… I was wondering if anyone could provide me additional details of the steps I would need to follow.

I’ve been using and for reference, but I think I need a little more information.


Hi Mike,

I apologize. The pubsub tutorial references our old hostname / cert.
I updated the pubsub-overview tutorial to reference our broker by and the new Let’s Encrypt cert.

Let me know if that help. If not, could you tell me what platform you are using and what your command line looks like?