Virus found in the message

[Mail Admin]

Scanner: MailMonitor for SMTP v1.2.2 

Problem description:
Email data:
MessageID: <200607210730.k6L7Ukl07806 at dsi-fe1.dsi.unifi.it>
From: questions at freebsd.org
To: das2004 at dsi.unifi.it
Cc: 
Subject: Returned mail: Data format error
Scanning part []

Scanning part [instruction.zip]
Attachment validity check: passed.
Virus identity found: W32/MyDoom-O
Virus identity found: W32/MyDoom-O

Virus identity found: W32/MyDoom-O
Virus identity found: W32/MyDoom-O