Secure Ubuntu 9.10 Mail Server

Secure Ubuntu 9.10 Mail Server: "The Mini-Course will help you set up a secure Ubuntu 9.10 Server using Postifx, Dovecot and Thunderbird with TLS and SMTP AUTH.
The goal of this configuration is to create a secure mail server using encrypted communication to retrieve mail and to send mail through your mail server.
1. Encrypted Connection to Retrieve Mail
Retrieve mail by connecting [...]"