The application (for example, an IMAP and SMTP e-mail, such as Microsoft Outlook) must be configured to connect to the localhost port instead of the application server port.

Figure 6.3 shows an example of e-mail account settings in Microsoft Outlook 2007.

Figure 6.3. Defining e-mail settings in Microsoft Outlook 2007

When the tunneled application connects to the localhost port, the connection is forwarded in encrypted format to Tectia Server, and from there unencrypted to the application server.