Yes, loaddefender.com can receive emails.
No, loaddefender.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
216.239.34.21
MX records
alt.mailsac.com
54.186.130.2
in.mailsac.com
52.10.8.95