Yes, 2014mail.ru can receive emails.
No, 2014mail.ru 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
185.174.172.253
MX records
mail.2014mail.ru
185.174.172.253
mail.2014mail.ru
185.174.172.253