Sorry to bring this thread up, but I still don't have a clue what is behind this whole situation which is described above. Also the way it works behind DirectAdmin, technically, you just have to know that part to figure out why it doesn't turn out the way it should be... i quess..
And that's why I tell myself: I don't want to know all that. After all I have done I don't know where I am now in the procedure of installing the certificate, so the best thing is to check the mail from RapidSSL again. They give me:
INSTALLATION INSTRUCTIONS
1. INSTALL CERTIFICATE:
Because there is no explaination for DirectAdmin, I cannot use the link they give me in the mail. Instead I check the manual of DA and this forum.
2. INTERMEDIATE CERTIFICATE ADVISORY:
You MUST install the RapidSSL intermediate Certificate included at the end of this e-mail on your server together with your Certificate or it may not operate correctly.
I am not sure what that means. I received two pieces of 'code':
- a 'Web Server CERTIFICATE'
- and an 'INTERMEDIATE CA'
What is this 'Intermediate certificate'?
This I received after I followed the instructions of renewal. Cause I already had a certificate before. It al turned out fine and I received the mail with those two pieces of 'code'. But in DA I cannot find anything like an 'intermediate certificate' installation, neither in the manual. What is it and how can I use it? Or: where do I need to paste it and when?
After that I can:
3. CHECK INSTALLATION:
Ensure you have installed your certificate correctly at:
https://knowledge.rapidssl.com/supp...=content&id=SO9556&actp=LIST&viewlocale=en_US
If I check it now, I receive an error:
"Invalid chain
Error: The certificate installation checker connected to the Web server and read its certificates, but could not determine which is the primary certificate for the Web server. Make sure that the domain name entered above matches the common name of the certificate installed on the Web server.
So yes, it's still not good, but I really have no clue how to solve it or what to do.
What is also confusing me is the BEGIN RSA PRIVATE KEY which I can find in DirectAdmin under: 'Paste a pre-generated certificate and key'. I still don't see what it is or how it fits in the procedure of installing the certificate, but Im sure it needs to be used at some point

.
Is there someone who can tell me in non-technical words, step by step, how to install the certificate in DA? I follow the steps in the DA manual, BUT even then! There seem to be three situations: use the server certificate (that's not the one I have to choose, I know that), and there is: pre-generated certificate or self-signed certificate. What's the difference? Is it 'self-signed' because I bought it myself? Maybe I followed the wrong manual?
Please, if someone could give a step-by-step 'go to this, choose this, paste this and that there'... it would be very helpfull..