Norton AntiVirus detected a virus in a message you sent. The infected attachment was deleted.

[NAVMSE-LI-EXCHANGE-01]

Recipient of the infected attachment:  Hubbard, David\Inbox
Subject of the message:  Thank you!
One or more attachments were deleted
  Attachment thank_you.pif was Deleted for the following reasons:
    Virus UNAUTHORIZED FILE was found.

<<application/ms-tnef>>