I’ve begun implementing Let’s Encrypt certificate automation for our customers, and we have encountered one domain for which we cannot request a challenge. The error is “Error creating new authz :: \“mail.somedomain.com\” was considered an unsafe domain by a third-party API”.
Everything I have read (community forums, blog posts, source code) indicates this is because the site is marked as malicious on Google’s safe browsing sites. I have requested the customer remediate with Google, but I wanted to check with the community: Are any services queried other than Google’s safe browsing API? Are we aware of any plans to query a new service as well? e.g. Microsoft SmartScreen