Yes, spa.com can receive emails.
No, spa.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
72.210.26.14
MX records
lihmail-spool.lightindustries.com
216.3.232.214
mx3.spa.com
72.210.26.11
mx4.spa.com
72.210.26.12