t42.dyndns.org has an A (IPv4) record (78.30.56.133) 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 t42.dyndns.org/78.30.56.133: Get "http://t42.dyndns.org/.well-known/acme-challenge/letsdebug-test": dial tcp 78.30.56.133:80: i/o timeout
Trace:
@0ms: Making a request to http://t42.dyndns.org/.well-known/acme-challenge/letsdebug-test (using initial IP 78.30.56.133)
@0ms: Dialing 78.30.56.133
@10001ms: Experienced error: dial tcp 78.30.56.133:80: i/o timeout
A test authorization for t42.dyndns.org to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
78.30.56.133: Fetching http://t42.dyndns.org/.well-known/acme-challenge/o4LRJ8MwpKoeZOzCfm8FGW-hoz-ZVnoqPXzSshDmm4M: Timeout during connect (likely firewall problem)
Requests made to the domain
Request to: t42.dyndns.org/78.30.56.133, Result: [Address=78.30.56.133,Address Type=IPv4,Server=,HTTP Status=0], Issue: ANotWorking
Trace:
@0ms: Making a request to http://t42.dyndns.org/.well-known/acme-challenge/letsdebug-test (using initial IP 78.30.56.133)
@0ms: Dialing 78.30.56.133
@10001ms: Experienced error: dial tcp 78.30.56.133:80: i/o timeout
A and AAAA records found for this domain
t42.dyndns.org. 0 IN A 78.30.56.133
Challenge update failures for t42.dyndns.org in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/5055024624
acme: error code 400 "urn:ietf:params:acme:error:connection": 78.30.56.133: Fetching http://t42.dyndns.org/.well-known/acme-challenge/o4LRJ8MwpKoeZOzCfm8FGW-hoz-ZVnoqPXzSshDmm4M: Timeout during connect (likely firewall problem)
The IANA public suffix is the TLD of the Registered Domain
The TLD for t42.dyndns.org is: org
The current status.io status for Let's Encrypt
Operational