I am new to this world, but have successfully obtained a certificate for my flying club’s new domain. Now they tell me they want to keep the old one as well. So I tried expanding my current certificate to add the old domain, but get this:
Domain: www.[name redacted].co.uk
Detail: Correct zName not found for TLS SNI challenge. Found ‘’
To fix these errors, please make sure that your domain name was
entered correctly and the DNS A record(s) for that domain
contain(s) the right IP address.
The DNS A records are correct, BTW.
Reading post here it says add it as a SAN, but does not tell me how to do this. I followed some instructions on the Web, but the “openssl req” command never exited! always the > prompt and the post did not say how you send the request! The command was this:
-new -newkey rsa:2048 -sha256 -nodes
-keyout privkey1.pem -out signreq.der -outform der
So I am stuck, can anyone help me please?