root@testmaskin:~# mosquitto_pub -t hello -m world -d -h nm.129-151-201-102.nip.io -p 8883 --cafile /root/certs/root.pem --cert /root/certs/client.pem --key /root/certs/client.key Error: Problem setting TLS options: File not found. [7:41 AM] root@testmaskin:~# ll /root/certs/ total 24 drwxr-xr-x 2 1883 1883 4096 Apr 26 21:02 ./ drwx------ 6 root root 4096 Apr 27 22:28 ../ -rw-r--r-- 1 1883 1883 119 Apr 26 21:02 root.key -rw-r--r-- 1 1883 1883 542 Apr 26 21:02 root.pem -rw-r--r-- 1 1883 1883 119 Apr 26 21:02 server.key -rw-r--r-- 1 1883 1883 583 Apr 26 21:02 server.pem [7:41 AM] no client.pem/key?