Сertbot failed to authenticate some domains (authenticator: standalone)

[lohudra]

При запуске сertbot certonly –standalone -m ваша_почта@yandex.ru -d mail.вашдомен.рф возвращается ответ:

certbot failed to authenticate some domains (authenticator: standalone). The certificate authority reported these problems. Invalid response from https://mail.xxx.com/.well-known/acme-challenge/ynmQU70X3vA1LGHPuJmjimqfYbBskXzW1gzr8tsFdm8: 404

Hint: The certificate authority failed to download the challenge files from the temporary standalone webserver started by Certbot on port 80. Ensure that the listed domains point to this machine and that it can accept inbound connections from the internet

curl -v

*Trying ip-address…
*Connect to ip-address port 80 failed: connection time out
*Failed to connect to mail.domen.com port 80 after 130205 ms: connection timed out
*Closing connection 0
Curl: (28) failed to connect to mail.domen.com port 80 after 130205 ms: connection timed out

Web-сервер nextcloud остановлен: sudo snap stop nextcloud

[jurganov]

а тут уже поглядел?

https://yandex.ru/search/?text=certbot+failed+to+authenticate+some+domains+(authenticator%3A+standalone).+The+certificate+authority+reported+these+problems.+Invalid+response+from&from=os&clid=1836587&lr=65