Aims to strengthen the reader's knowledge of the fundamental concepts and technical details necessary to develop, implement, or debug e-mail software. The text explains the underlying technology and describes the key Internet e-mail protocols and extensions such as SMTP, POP3, IMAP, MIME and DSN. It aims to help the reader build a sound understanding of e-mail archtitecture, message flow and tracing protocols, and includes real-world examples of message exchanges with program code that they can refer to when developing or debugging their own systems. The reader should also gain valuable insight into various security topics, including public and secret key encryption, digital signatures and key management. Each chapter begins with a detailed definition list to help speed the reader's understanding of technical terms and acronyms. The CD-ROM contains a listing of related Internet RFCs, as well as RSA PKCS documents, Eudora 3.0 freeware client, and the free user version of Software.com.Post.Office Server for Windows NT 3.0.