www.natan-security.net has both AAAA (IPv6) and A (IPv4) records. While they both appear to be accessible on the network, we have detected that they produce differing results when sent an ACME HTTP validation request. This may indicate that the IPv4 and IPv6 addresses may unintentionally point to different servers, which would cause validation to fail.
[Address Type=IPv4,Server=Apache/2.4.18 (Ubuntu),HTTP Status=404] vs [Address Type=IPv6,Server=Apache/2,HTTP Status=404]
An internal error occurred while checking the domain
Failed to query certwatch database to check rate limits: dial tcp: i/o timeout
The current status as reported by the Let's Encrypt status page is Planned Maintenance as at 2019-01-18 20:17:01.017 +0000 UTC. Depending on the reported problem, this may affect certificate issuance. For more information, please visit the status page.
https://letsencrypt.status.io/