Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the Postfix program at host smtp1.flm.fujitsu.com.

I'm sorry to have to inform you that the message returned
below could not be delivered to one or more destinations.

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 message returned below.

                        The Postfix program

<fumikok@flm.fujitsu.com>: host castor.flm.fujitsu.com[10.73.189.111] said: 550
    5.1.1 <fumikok@flm.fujitsu.com>... User unknown

Reporting-MTA: dns; smtp1.flm.fujitsu.com
Arrival-Date: Fri,  4 Mar 2005 08:23:19 +0900 (JST)

Final-Recipient: rfc822; fumikok@flm.fujitsu.com
Action: failed
Status: 5.0.0
Diagnostic-Code: X-Postfix; host castor.flm.fujitsu.com[10.73.189.111] said:
        550 5.1.1 <fumikok@flm.fujitsu.com>... User unknown
> --- Begin Message ---
>
>
>
> Subject: 
>
> Mail Delivery (failure address@hidden)
>
>
>
>
> Date: 
>
> Fri, 4 Mar 2005 08:33:10 +0900
>
>
>
>
> ------------------  Virus Warning Message (on the network)
>
> Found virus HTML_Netsky.P in file email-body
> The file is deleted.
>
> Found virus WORM_NETSKY.P in file message.scr
> The file is deleted.
>
> ---------------------------------------------------------
>
> ------------------  Virus Warning Message (on the network)
>
> email-body is removed from here because it contains a virus.
>
> ---------------------------------------------------------
>
> ------------------  Virus Warning Message (on the network)
>
> message.scr is removed from here because it contains a virus.
>
> ---------------------------------------------------------
>
> --- End Message ---