Yes, leet.la can receive emails.
No, leet.la 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
None
MX records
alt1.aspmx.l.google.com
64.233.186.27
aspmx.l.google.com
173.194.68.26