hi, need some help please. iam trying to get certificate for iis 8… spent some time to fix acme challenge, but the problem was not in my settings: first domain i tried was: 1s.some-domain.ru i got 404 error… then i tried second domain: nt.domain.ru and i got certificate… first and second domain …

ok, i’v tested it, removed my AAAA records from DNS and all works fine now, letsencrypt prefers IPv6 DNS requests. thank you ahaw021!