E-mail has been called the killer application of the Internet with so many web-based commerce applications, business-to-business transactions, and Application Service Providers dependent on the e-mail client/server relationship. Now, because of that reliance, it is possible for e-mail software to become killer applications in an entirely different sense—if they’re down, they can kill your business. E-mail Virus Protections Handbook will help systems administrators and the end-users secure their e-mail. It shows how to encrypt e-mail messages, use antivirus and personal firewall software, and secure the operating system from attack. Know what’s lurking in your e-mail!