Issue with Google Index checker - one of our vendors that checks whether the website is indexed by Google is facing downtime. Due to this the domains are not being checked for indexation. As soon as they fix this, we will remove the message. Sorry about this.
We flag a domain if any of the three conditions are met
1. No pages are indexed by Google. This is checked by issuing a "site: domain" query to Google and flagged if no results are returned
2. Google has no info on the site. This is checked by issuing a "info: domain" query to Google and flagged if no results come up or if a different domain shows up.
3. If the Moz Spam Score is greater than 5.