Returned mail: User unknown

[Mail Delivery Subsystem]

The original message was received at Thu, 8 Apr 2004 16:06:49 +0900
from localhost [127.0.0.1]

   ----- The following addresses had permanent fatal errors -----
<danlel@digital.co.jp>

   ----- Transcript of session follows -----
... while talking to [10.27.16.1]:
>>> RCPT To:<danlel@digital.co.jp>
<<< 550 <danlel@digital.co.jp>... User unknown
550 <danlel@digital.co.jp>... User unknown

Reporting-MTA: dns; digscan.digital.co.jp
Received-From-MTA: DNS; localhost
Arrival-Date: Thu, 8 Apr 2004 16:06:49 +0900

Final-Recipient: RFC822; danlel@digital.co.jp
Action: failed
Status: 5.1.1
Remote-MTA: DNS; [10.27.16.1]
Diagnostic-Code: SMTP; 550 <danlel@digital.co.jp>... User unknown
Last-Attempt-Date: Thu, 8 Apr 2004 16:06:49 +0900
> --- Begin Message ---
>
>
>
> Subject: 
>
> Private document
>
>
>
>
> Date: 
>
> Thu, 8 Apr 2004 15:20:01 +0800
>
>
>
>
> ------------------  Virus Warning Message (on digscan.digital.co.jp)
>
> Found virus WORM_NETSKY.P in file document.txt                                  
>                                  .exe (in your_document.zip)
> The uncleanable file your_document.zip is moved to /var/iscan/virus/virdbqpP9.
>
> ---------------------------------------------------------
>
> I found this document about you.
>
> ------------------  Virus Warning Message (on digscan.digital.co.jp)
>
> your_document.zip is removed from here because it contains a virus.
>
> ---------------------------------------------------------
>
> --- End Message ---