How does Yahoo Mail determine if a domain name is high risk for Spam?


New Email
One of our co-workers has been using Yahoo Mail as an alternate email address to reach her. We have been forwarding emails to her Yahoo email address that came into her work email address. When she was setting up an email rule in her Yahoo Business Mail to put the forwarded emails into a certain folder, a pop-up appeared that stated that "Our companies' Domain name was a high risk for Spam" and asked her to confirm that she wish to do this.


1.) Is this pop-up just a generic pop-up or is something actually triggering it?

2.) How does Yahoo Mail determine a domain name is a high risk for Spam? I have checked and our companies' domain name is not on a Spam Blacklist

Thank you!