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Chapter 15. Enhancing Outlook Email Secu... > Sending and Receiving Secure Email

Sending and Receiving Secure Email

When you connect to a website, your browser sets up a direct connection—called a channel—between your machine and the web server. Because the channel is a direct link, it’s relatively easy to implement security because all you have to do is secure the channel, which is what security protocols such as Private Communication Technology (PCT) and Secure Sockets Layer (SSL) do.

However, email security is entirely different and much more difficult to set up. The problem is that email messages don’t have a direct link to a Simple Mail Transfer Protocol (SMTP) server. Instead, they must usually “hop” from server to server until the final destination is reached. Combine this with the open and well-documented email standards used on the Internet, and you end up with three email security issues:


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