help

I was trying to send message to one of customer whose Emails are
hosted in my mail server, i got the following error message,

Please anone's help in this subject is highly appreciated, thanks in
advance,


Reporting-MTA: dns; mailgate2.cyberia.net.sa
X-Postfix-Queue-ID: 3678C1F06CA
X-Postfix-Sender: rfc822; ejazrom@hotmail.com
Arrival-Date: Wed, 7 May 2008 16:10:18 +0300 (GMT)

Final-Recipient: rfc822; arlino@oceanview.com.sa
Action: failed
Status: 5.0.0
Diagnostic-Code: X-Postfix; mail for oceanview.com.sa loops back to
myself