Authorization error for 403

My domain is:

I use to get certificate certbot in kubernetis. version v1.10.0. when requesting a certificate for a domain, I get an authorization error from the hostprovider. dns are configured correctly. I suppose the problem is in the redirect, but I can’t reproduce it at home and correctly follow the URL generated by the certbot.

E1212 05:33:59.079473 1 sync.go:379] cert-manager/challenges/acceptChallenge "msg"="error waiting for authorization" "error"="acme: authorization error for 403 urn:ietf:params:acme:error:unauthorized: 2a03:6f00:6:1::b972:f56c: Invalid response from "\n<html lang=\"en\">\n\n <meta charset=\"UTF-8\">\n <meta name=\"viewport\" content=\"width=device-width, initia"" "dnsName"="" "resource_kind"="Challenge" "resource_name"="ssl-itsmartfinance-ru-kxq2g-2063697632-3158031136" "resource_namespace"="front-prod" "resource_version"="v1" "type"="HTTP-01"

The IPv6 address (DNS AAAA record) for your domain points to a domain parking page run by

If you remove this address or change it so that it points to your Kubernetes server, the problem should go away.


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