Yes, cleansite.us can receive emails.
No, cleansite.us is a throwaway domain and should be blocked.
You can use MailCheck's free API to automatically block throwaway emails. Read our documentation to get started. No registration required.
A record
209.208.4.62
MX records
mx1.changeip.com
42.113.162.9
mx2.changeip.com
42.113.162.9