"Klaas" wrote:

I have a part I sent to CA created whit openssl req -new -days 365 -nodes -config stunnel.cnf -out certreq.pem -keyout stunnel.pem

I have get return a file certnew.cer and I have the file stunnel.pem. And now I don't know what I have to do next to get this certificate. I have tried several options but no one works.

cert = /path/to/certnew.cer key = /path/to/stunnel.pem

Or concatenate them into one file and use cert = ... only (no key = ...).

Also take care that the CN is the server FQDN to which the client connects.