Writing an E-mail Proxy Server Part Ⅱ: Implementing Hotmail Specifics

摘要

This two-part series provides a small case study on how to use Delphi to handle the e-mail protocols POP and SMTP, WebDAV (Web Distributed Authoring and Versioning protocol), and to write a fully functional local POP/SMTP proxy server for sending and retrieving hotmail.com e-mails using your favorite e-mail client. It also touches on some security issues such as Internet Explorer security zones and filtering client connections based on IP addresses. In Part I, we examined the problem and technologies. Now we'll implement the solution. With last month's work complete, we have the entire framework we need. The final task is to implement the back-end that allows our POP and SMTP servers to translate and pass commands to Hotmail. If we use a layered view, we'll be building the lower layer, which uses Microsoft Hotmail as the e-mail transport.