How many _acme-challenge TXT responses are allowed for a single name?
The DNS-01 explanation says:
“You can have multiple TXT records in place for the same name. For instance, this might happen if you are validating a challenge for a wildcard and a non-wildcard certificate at the same time. However, you should make sure to clean up old TXT records, because if the response size gets too big Let’s Encrypt will start rejecting it.”
After how many challenge records, will it start rejecting?
The reason I ask, is because I have made this client: https://github.com/sebastiannielsen/pdns-certbot which simply puts all challenges on all domain names, so validating for example 8 domain name would have it return 8 TXT records for each domain.
Would be nice for documentation to specify how many domain names it could handle at maximum given the constraints, and also improve my anti-sabotage security check in the script (as people expressed concerns of the challenge source file being chmod 0666 in issues)