Yes, pro-tag.org can receive emails.
No, pro-tag.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
127.0.0.1
MX records
mxrelay-01.mxes.net
205.237.194.82
mxrelay-02.mxes.net
205.237.194.108
tarbaby.junkemailfilter.com
184.105.182.220