Yes, telkomuniversity.duckdns.org can receive emails.
No, telkomuniversity.duckdns.org 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
87.98.164.155
MX record
telkomuniversity.duckdns.org
87.98.164.155