A simple tool to check whether the DNS challenge for the LetsEncrypt certificate is set up correctly.
To build:
go build -o ~/your/bin/directory/
Usage of certchecker:
certchecker [-h] [-v] [-dns 1.2.3.4] host.name...
-dns string
set the DNS server to query from (default "1.1.1.1")
-h show this help
-v output raw request results