Virus found in the message

[mmsmtp at vandyke.com]

Client: vandyke1.vandyke.com[216.184.8.8]

Sender: <doc at freebsd.org>

Quarantine reference: 

Recipient(s): <support at vandyke.com>

Scanner: MailMonitor for SMTP v1.2.0 

Problem description:
Email data:
MessageID: <200403090106.i2916rtV087452 at vandyke1.vandyke.com>
From: doc at freebsd.org
To: support at vandyke.com
Cc: 
Subject: hi
Scanning part []

Scanning part [talk.txt.exe]
Attachment validity check: passed.
Virus identity found: W32/Netsky-B