Yes, nincsmail.hu can receive emails.
No, nincsmail.hu 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
137.117.136.15
MX records
ALT1.ASPMX.L.GOOGLE.COM
64.233.186.27
ASPMX.L.GOOGLE.COM
173.194.175.26