Failed to pass the challenge for domain

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Using acme4j client fails to generate certificate with this error:

org.shredzone.acme4j.exception.AcmeException: Failed to pass the challenge for domain www.
mysampledomain123.com, ... Giving up.

I manually checked the challenge file and got

http://www.mysampledomain123.com/.well-known/acme-challenge/jU--PkDrn5tDZw2RN6NNJHbPD00ovHFkLFvN3mJdeQX

Inside the file:

jU--PkDrn5tDZw2RN6NNJHbPD00ovHFkLFvN3mJdeQX.tuMr-UijwpsJ1KVZkdWTYgodWZ2SxxKdB7_CMAAEfpg

And here’s the complete HTTP response header:

Accept-Ranges: bytes
Connection: keep-alive
Content-Encoding: gzip
Content-Type: text/plain
Date: Sun, 16 Feb 2020 14:15:22 GMT
Server: nginx/1.14.0 (Ubuntu)
Transfer-Encoding: chunked
Vary: Accept-Charset, Accept-Encoding, Accept-Language, Accept
X-Powered-By: Divroll
X-RateLimit-Limit: 1000
X-RateLimit-Remaining: 999
X-RateLimit-Reset: 0

I’m wondering whether the problem is with the HTTP response headers or the content itself.
Any ideas would be appreciated.

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There doesn’t seem to be enough detail in the acme4j logs entry provided to help anyone easily determine where/what the problem is.

If there is any way to increase the logging, please do so - if only for a test.
Then also post the log file here - maybe someone can find a clue in there. :slight_smile:

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