vault.burstein.de has an A (IPv4) record (92.39.23.246) but a request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address.
A timeout was experienced while communicating with vault.burstein.de/92.39.23.246: Get "http://vault.burstein.de/.well-known/acme-challenge/letsdebug-test": context deadline exceeded
Trace:
@0ms: Making a request to http://vault.burstein.de/.well-known/acme-challenge/letsdebug-test (using initial IP 92.39.23.246)
@9ms: Dialing 92.39.23.246
@10000ms: Experienced error: context deadline exceeded
A test authorization for vault.burstein.de to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://vault.burstein.de/.well-known/acme-challenge/2vavQ2daVJ5seXKJ2uAY2khp-UD6ifn8RtC-upx158s: Timeout during connect (likely firewall problem)
Requests made to the domain
Request to: vault.burstein.de/92.39.23.246, Result: [Address=92.39.23.246,Address Type=IPv4,Server=,HTTP Status=0], Issue: ANotWorking
Trace:
@0ms: Making a request to http://vault.burstein.de/.well-known/acme-challenge/letsdebug-test (using initial IP 92.39.23.246)
@9ms: Dialing 92.39.23.246
@10000ms: Experienced error: context deadline exceeded
A and AAAA records found for this domain
vault.burstein.de. 0 IN A 92.39.23.246
Challenge update failures for vault.burstein.de in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/71660527
acme: error code 400 "urn:ietf:params:acme:error:connection": Fetching http://vault.burstein.de/.well-known/acme-challenge/2vavQ2daVJ5seXKJ2uAY2khp-UD6ifn8RtC-upx158s: Timeout during connect (likely firewall problem)
The IANA public suffix is the TLD of the Registered Domain
The TLD for vault.burstein.de is: de
The current status.io status for Let's Encrypt
Operational