Let's Encrypt CAA rechecking bug checker

Snippet Following is quick and dirty snippet to perform a check for CAA Rechecking Bug against your sites. #!/usr/bin/env python3 import requests ## This python3 code snippet checks for the bug reported on: ## https://community.letsencrypt.org/t/2020-02-29-caa-rechecking-bug/114591 ## This script can be run as: `python3 letsencrypt_caa_bugcheck.py` ## Replace the value for domains with appropriate domains you want to check against. domains = ["myfirstdomain.com", "myseconddomain.com"] url = 'https://checkhost.unboundtest.com/checkhost' for domain in domains: print('Testing LetsEncrypt CAA rechecking bug for:', domain) payload = {'fqdn': domain} req = requests.