Is Virus Protection Assistant up-to-date on its virus definitions?
Yes. Virus Protection Assistant updates virus definitions continuously. Not only will virus scanning of malicious email viruses prove extremely valuable to you, but it also saves valuable time by scanning messages behind the scenes. You are only notified when a virus is found in a message.

How does Postini notify me that virus-infected email has been detected?
You are notified immediately via email when an infected virus is detected in an email message. From the Message Center, you can safely review the infected email text.