unifi.penntech-it.com has an A (IPv4) record (51.140.36.218) 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 unifi.penntech-it.com/51.140.36.218: Get "http://unifi.penntech-it.com/.well-known/acme-challenge/letsdebug-test": dial tcp 51.140.36.218:80: i/o timeout
Trace:
@0ms: Making a request to http://unifi.penntech-it.com/.well-known/acme-challenge/letsdebug-test (using initial IP 51.140.36.218)
@0ms: Dialing 51.140.36.218
@10001ms: Experienced error: dial tcp 51.140.36.218:80: i/o timeout
A test authorization for unifi.penntech-it.com to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
51.140.36.218: Fetching http://unifi.penntech-it.com/.well-known/acme-challenge/xxJsKyCcKFdw2kxCoBCaZp_VWvyN_uhpE78LTsdAqEY: Timeout during connect (likely firewall problem)
Requests made to the domain
Request to: unifi.penntech-it.com/51.140.36.218, Result: [Address=51.140.36.218,Address Type=IPv4,Server=,HTTP Status=0], Issue: ANotWorking
Trace:
@0ms: Making a request to http://unifi.penntech-it.com/.well-known/acme-challenge/letsdebug-test (using initial IP 51.140.36.218)
@0ms: Dialing 51.140.36.218
@10001ms: Experienced error: dial tcp 51.140.36.218:80: i/o timeout
A and AAAA records found for this domain
unifi.penntech-it.com. 0 IN A 51.140.36.218
Challenge update failures for unifi.penntech-it.com in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/6335099653
acme: error code 400 "urn:ietf:params:acme:error:connection": 51.140.36.218: Fetching http://unifi.penntech-it.com/.well-known/acme-challenge/xxJsKyCcKFdw2kxCoBCaZp_VWvyN_uhpE78LTsdAqEY: Timeout during connect (likely firewall problem)
The IANA public suffix is the TLD of the Registered Domain
The TLD for unifi.penntech-it.com is: com
The current status.io status for Let's Encrypt
Operational