Is STI Junk Email Filtering up-to-date on its virus definitions?
Yes. STI Junk Email Filtering updates virus definitions as needed.

Do I need this protection? I already have an antivirus program installed.
STI Junk Email Filtering saves valuable time by quarantining infected messages before you download, not after you receive them the way an installed program does. We advise that you keep your own antivirus program up to date, since viruses can come from other sources.

How am I notified that virus-infected email has been detected?
Your Spam Digest includes details about infected messages as well as spam. You choose whether to receive the Spam Digest daily, weekly, or monthly. From the Personal Dashboard, you can safely review the infected email text.