Delivery Status Notification (Failure)Mail System Error - Returned Mail

[hop@hsvina.com]

Technical details of permanent failure:
WiseOne tried to deliver your message, but it was rejected by the recipient domain. 
We recommend contacting the other email provider for further information about the cause of this error. 
The error that the other server returned was: 550 550 5.1.1 No Such user 
.....................................

Message details:
  Subject: Mail System Error - Returned Mail
  Sent date: Wed Jun 08 10:25:08 ICT 2011
  MAIL FROM: tp@lists.linux.it
  RCPT TO: hmlee@hsvina.com
  From: tp@lists.linux.it 
  To: hmlee@hsvina.com 
  Size (in bytes): 40441
  Number of lines: 538

Message Headers:
Message-ID: <17628097.770877.1307503319724.JavaMail.wiseone@GROUPWARE>
MIME-Version: 1.0
Received: from f1-manhtien.hsv.local ([10.10.50.113])
          by GROUPWARE (wiseOne SMTP Server 2.0) with SMTP ID 551
	         for <hmlee@hsvina.com>;
          Wed, 8 Jun 2011 10:21:59 +0700 (ICT)
From: tp@lists.linux.it
To: hmlee@hsvina.com
Subject: Mail System Error - Returned Mail
Date: Wed, 8 Jun 2011 10:25:08 +0700
Content-Type: multipart/mixed;
	boundary="----=_NextPart_000_0001_2C43F24F.BF771C01"
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2600.0000
X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2600.0000