I noticed in past threads (circa late 2015) that LetsEncrypt had issues with the NetRegistry name servers and timeouts. Our domains are with NetRegistry, and we’re getting “DNS problem: SERVFAIL looking up A for www.example.com” error messages. Doing a quick DNS Analysis from 24x7.com shows a consistent response time of 330ms from the NetRegistry name servers, while another domain (which is on the same physical hardware at our site but with a different DNS provider) is getting certs AOK and has a DNS Analysis response time of sub-50ms - so it must be the NetRegistry name servers.
So has the issue from late-2015 been resolved? Is there a work-around (apart from not using NetRegistry)? Is there an argument I can add to the certbot command to ensure the LetsEncrypt server doesn’t timeout too soon?
Any help is appreciated