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: Sat Mar 12 09:08:30 ICT 2011
  MAIL FROM: tp@lists.linux.it
  RCPT TO: tom@hsvina.com
  From: tp@lists.linux.it 
  To: tom@hsvina.com 
  Size (in bytes): 41005
  Number of lines: 732

Message Headers:
Message-ID: <32423255.238505.1299895521555.JavaMail.wiseone@GROUPWARE>
MIME-Version: 1.0
Received: from 10.10.20.82 ([10.10.20.82])
          by GROUPWARE (wiseOne SMTP Server 2.0) with SMTP ID 292
	         for <tom@hsvina.com>;
          Sat, 12 Mar 2011 09:05:21 +0700 (ICT)
From: tp@lists.linux.it
To: tom@hsvina.com
Subject: Mail System Error - Returned Mail
Date: Sat, 12 Mar 2011 09:08:30 +0700
Content-Type: multipart/mixed;
	boundary="----=_NextPart_000_0001_A3B5D3F0.4D1C467C"
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