Norton AntiVirus quarantined an attachment in a message you sent.

[NAV for Microsoft Exchange-TRETI]

Recipient of the attachment:  Matusak  Lubos\Inbox
Subject of the message:  Important
One or more attachments were quarantined.
  Attachment Part-2.zip was Quarantined for the following reasons:
        Scan Engine Failure (0x80004005)
        General Scan Engine error