Error creating certificate



Im running and i’m trying to create a letsencrypt certificate through a plugin called Duckdns.

While running the script i get the following error:

  • Signing domains…
  • Generating private key…
  • Generating signing request…
  • Requesting new certificate order from CA…
  • ERROR: An error occurred while sending post-request to (Status 400)
    HTTP/1.1 100 Continue
    Expires: Sat, 15 Sep 2018 17:35:39 GMT
    Cache-Control: max-age=0, no-cache, no-store
    Pragma: no-cache

HTTP/1.1 400 Bad Request
Server: nginx
Content-Type: application/problem+json
Content-Length: 149
Boulder-Requester: XXXXX
Replay-Nonce: XXXXXXX

It looks like the post request for the certificate fails. What does the status 400 mean?

Best regards,



Hi @D3rax

there are a lot of variants. Perhaps you’ve hitted a limit. What’s your domain name? Aren’t there more messages?


Is there a way to check which limites has been reached?

It could be that I reached the limit of 5 renewals per week, but im not sure.


If you have certificates created, you can check these per Certificate Transparency

But then you would have 5 certificates, so this can’t be the problem.



you write additional things.

  "type": "urn:ietf:params:acme:error:malformed",
  "detail": "Error creating new order :: DNS name does not have enough labels",
  "status": 400


Good call, I had not focused on the last few lines anymore. Found the meaning of the dns labels on this forum.

Turned out I did no put my domain name correctly in the addon (did not fillin the complete adress).


Then this is the error. Yes, you must use your complete domain name to get a certificate.


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