Yes, fido.be can receive emails.
No, fido.be 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
145.129.226.6
MX records
mx1.improvmx.com
188.165.221.134
mx2.improvmx.com
188.165.254.28