Rogue registered owners in certificate manager

These email addresses usually originate from your registered domain registrar account. Please log in to your domain registrar (if it is not Amazon Route 53 Domain Registrations) and verify or update the email addresses for validation.

Alternatively, you can look up your domain information at ICANN Lookup - https://lookup.icann.org/en/lookup

For more details on how email validation works, refer to the AWS documentation on email validation - https://docs.aws.amazon.com/acm/latest/userguide/email-validation.html

Hope this helps.