Yes, lastmail.co can receive emails.
No, lastmail.co 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
169.47.150.123
MX records
exchange.lastmail.co
169.47.150.123
mail.lastmail.co
174.36.252.198