Sending messages to this contact address giving an error message. Can anyone interpret why the error message appearing?
----- Forwarded Message ----- This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: firstname.lastname@example.org host mta5.am0.yahoodns.net [18.104.22.168] SMTP error from remote mail server after end of data: 554 delivery error: dd This user doesn't have a yahoo.com account (email@example.com)  - mta1314.mail.bf1.yahoo.com Name : Email : firstname.lastname@example.org Phone : 888-88888 Message : Trial