Why does the error "DNS problem: NXDOMAIN looking up TXT" occur?

Question

Digital certificates

I raise the web server at home. An error occurs while retrieving Let's Encrypt certificates.

wget https://dl.eff.org/certbot-auto
chmod a+x certbot-auto
./certbot-auto -d kalinger.ru -d www.kalinger.ru --manual --preferred-challenges dns certonly

In the process I get:
_acme-challenge.kalinger.ru
ZMIVMoNrhGArfqrPf25YQNOLnbJdZ72fNWhXXXXXXXX
_acme-challenge.www.kalinger.ru
Z8qVbHNMwMr6xm8_3TCcVK7kjUVvB3MLU6WUXXXXXXX
Domain registered on godaddy. I add records

I get as a result

I would be very grateful at least for advice in which direction to dig.

Answer 1

cannot reach the site - is it definitely possible to access it from the outside?