Http challenge failure

My domain is:

Aceme account url:

I am using acme4j java client


  • We are using above mentioned acme java client

  • For few domains the http challenge failed for us. We have retry mechanism running after 6 hours it got passed in those retries.

  • I wanted to know why it would have failed so that we can make our system more robust.

  • For the mentioned domain it was failed at 2022-10-30 17:39:49 UTC. There is no error codes, nothing in the http challenge.

  • The http request initiated for the challenge is also responded with 200 response code from our infra. This is the url from our logs

Can you please help on this, knowing the reason for failure so that if any changes required on our side, we can do those?

Thank you.

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