I sent an email, but immediately got a reply saying:
Final-Recipient: rfc822;
[email protected]
Action: failed
Status: 5.0.0 (permanent failure)
Diagnostic-Code: smtp; 5.1.2 - Bad destination host 'DNS Hard Error looking up smtpint.xxx.edu (MX): NXDomain' (delivery attempts: 0)
I was wondering
what this error report means,
where in the delivery route the error happened,
who should be contacted to solve
this issue and how to solve it?
Thanks and regards! I also appreciate if someone can
explain a bit more about the mechanism behind the email delivery.