I’m affiliated with Variti LLC (variti.com), IP 185.165.123.206 which domain is pointed to belongs to us. Yandex already pointed this subdomain to our IP. Few days ago a new letsencrypt CAA record appeared for this subdomain.
t.health.yandex.ru is subdomain of our client for testing services under ddos protection.
If it is possible, we will be glad for removing this subdomain (only this = t.health.yandex.ru) from this list to allow to process cert request. If not, please write what we can do for this, we will forward this request to Yandex.
Unfortunately we can only process removals for the base domain, not specific subdomains. I will DM you with the information required to pass on to Yandex.