Yes, fnisj892kosoks29293939.heliohost.org can receive emails.
No, fnisj892kosoks29293939.heliohost.org 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
65.19.141.67
MX records
fnisj892kosoks29293939.heliohost.org
65.19.141.67
mail.mailinator.com
23.239.11.30