One of my clients is running the latest version of Plesk and is experiencing intermittent issues with LetsEncrypt being unable to validate different domains, citing 400 "Timeout" errors. Due to the haphazard nature of the problem, I wanted to come here to see if anyone could potentially find someth…

[image] richpeck: http://www.lurgolog.it/.well-known/acme-challenge/maxXmLFtYHZx8T1Xfkedqzb25X5CLa2sw6vxjfR0YNk I just sent nearly 200 requests to that address and I did not see a single failure. Geoblocking, maybe? ❯ for _ in {1..100}; do curl -sfL http://www.lurgolog.it/.well-known/acme-ch…

Thank you for the replies guys! Test result for www.lurgolog.it: Error 1 unique issue(s) detected (IssueFromLetsEncrypt) This is also showing 400 error... which, again, suggests a geoblock. I'm going to see if I can talk to the host about it - to see if any…

FYI, my requests came from Italy. But my servers in Germany and Iceland have no issue either, with that address.

btw seems the client is using Arsys hosting, which seems to be the culprit in the @mserra post above (thank you for that by the way). Currently reading through that thread.

400 Timeout Error in Plesk

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mserra April 27, 2022, 10:31am 2

Take a look: Suddenly Timeout during connect (likely firewall problem) for www subdomain

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400 Timeout Error in Plesk

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