Yes, anon-mail.de can receive emails.
No, anon-mail.de 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
77.235.182.82
MX records
mailgate1.isp-cosimo.de
77.235.182.101
mailgate2.isp-cosimo.de
185.248.148.8