Undelivered Mail Returned to Sender

From: MAILER-DAEMON@/etc/mailname
Domain: IP info /etc/mailname
MX-server: IP info mail.ticketnew.com
Size: 560 Bytes
Create: 2024-06-23
Update: 2024-06-23
Score: 0
Safe: Yes

This is the mail system at host mx2.africaonline.com.gh. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to postmaster. If you do so, please include this problem report. You can delete your own text from the attached returned message. The mail system : host 212.85.196.22[212.85.196.22] said: 451 4.3.0 : Temporary lookup failure (in reply to RCPT TO command)