Yes, qmail.monster can receive emails.
No, qmail.monster 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
198.187.31.121
MX records
mx1-hosting.jellyfish.systems.
198.54.127.242
mx2-hosting.jellyfish.systems.
63.250.43.74
mx3-hosting.jellyfish.systems.
162.255.118.13
This domain has been found on quik.email