Yes, 139.com can receive emails.
No, 139.com 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
221.176.9.121
MX records
mx1.mail.139.com
221.176.66.188
mx2.mail.139.com
221.176.66.188
mx3.mail.139.com
221.176.9.178