[quote=“greavette, post:7, topic:16694”]
I’ve been using my own company certs which I’ve uploaded to Nethserver
[/quote]/etc/
Did you set it as default?
If yes please compare the /etc/ejabberd/ejabber.pem with /etc/pki/tls/localhost.crt and /etc/pki/tls/private/localhost.key
A pem certificate can be the crt plus the key file, see https://stackoverflow.com/questions/991758/how-to-get-pem-file-from-key-and-crt-files
Maybe it’s enough to set the wanted certificate as default in Cockpit again and then restart ejabberd. Sometimes the process of setting certs for the apps is interrupted.