I have someone who is getting a bounce back on an email that was sent months ago. The message does not show as being sent from your sent box but the bounce back showed up.
Delivery has failed to these recipients or groups:
Diagnostic information for administrators:
Generating server: bigfish.com
brett@oldies1015fm.com
#< #5.4.4 smtp;554 5.4.4 SMTPSEND.DNS.NonExistentDomain; nonexistent domain> #SMTP#
#< #5.4.4 smtp;554 5.4.4 SMTPSEND.DNS.NonExistentDomain; nonexistent domain> #SMTP#
