USNPS detected an executable attachment in an email that appears to be from you.

The USNPS does not allow our users to receive executable attachments by email.
  Please place them in a ZIP file or send a URL to the recepient to make them available for download.
Please note that if you did not send a message to our user, a number of computer viruses make it appear that the author of a message is someone else. If that's happened to you, please disregard this message.
Should you have any questions, please contact your system administrator or IT support group.
DO NOT REPLY TO THIS EMAIL - IT WILL NOT BE DELIVERED. The infected component in the scanned document was deleted.

Violation Information:
The attachment movie0045.pif contained the virus W32.Sobig.F@mm and was quarantined on server NP077WASHDC/MTA/NPS. No attempt was made to repair. The filename extension of attachment movie0045.pif violated the content filtering rule 0. Delete msgs with executable attachments. No attempt was made to repair. Received on Tue Aug 19 15:47:18 2003