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| James 2.3 - Component Summary</title> |
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| Last Published: 09/02/2009 |
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| <h5>James Server</h5> |
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| <h5>Configuration</h5> |
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| <a name="The James Server"></a><div class="section"><h2>The James Server</h2> |
| |
| <p>James is an open source project intended to produce a robust, flexible, and powerful |
| enterprise class server that provides email and email-related services. It is also designed to |
| be highly customizable, allowing administrators to configure James to process email in a |
| nearly endless variety of fashions.</p> |
| |
| <p>The James server is built on top of the Avalon Framework. The standard James distribution |
| deploys inside the Phoenix Avalon Framework container. In addition to providing a robust |
| server architecuture for James, the use of Phoenix allows James administrators to deploy |
| their own applications inside the container. These applications can then be accessed during |
| mail processing.</p> |
| |
| <p>The James server is implemented as a complete collection of servers and related components that, taken together, |
| provide an email solution. These components are described below.</p> |
| |
| </div> |
| <a name="POP3 Service"></a><div class="section"><h2>POP3 Service</h2> |
| |
| <p>The POP3 protocol allows users to retrieve email messages. It is the method |
| most commonly used by email clients to download and manage email messages.</p> |
| |
| <p>The James version of the POP3 service is a simple and straightforward implementation that |
| provides full compliance with the specification and maximum compatibility with common |
| POP3 clients. In addition, James can be configured to require SSL/TLS connections for |
| POP3 client connecting to the server.</p> |
| |
| <p>More information on configuring the POP3 service can be found <a href="pop3_configuration.html">here</a>.</p> |
| |
| </div> |
| <a name="SMTP Service"></a><div class="section"><h2>SMTP Service</h2> |
| |
| <p>SMTP (Simple Mail Transport Protocol) is the standard method of sending and delivering |
| email on the internet. James provides a full-function implementation of the SMTP specification, |
| with support for some optional features such as message size limits, SMTP auth, and encrypted |
| client/server communication.</p> |
| |
| <p>More information on configuring the SMTP service can be found <a href="smtp_configuration.html">here</a>.</p> |
| |
| </div> |
| <a name="NNTP Service"></a><div class="section"><h2>NNTP Service</h2> |
| |
| <p>NNTP is used by clients to store messages on and retrieve messages from news servers. James provides |
| the server side of this interaction by implementing the NNTP specification as well as an appropriate |
| repository for storing news messages. The server implementation is simple and straightforward, but |
| supports some additional features such as NNTP authentication and encrypted client/server communication.</p> |
| |
| <p>More information on configuring the NNTP service can be found <a href="nntp_configuration.html">here</a>.</p> |
| |
| </div> |
| <a name="FetchMail"></a><div class="section"><h2>FetchMail</h2> |
| |
| <p>FetchMail, unlike the other James components, is not an implementation of an RFC. Instead, it's a |
| component that allows the administrator to configure James to retrieve email from a number of POP3 |
| servers and deliver them to the local spool. This is useful for consolidating mail delivered to a |
| number of accounts on different machines to a single account.</p> |
| |
| <p>More information on configuring FetchMail can be found <a href="fetchmail_configuration.html">here</a>.</p> |
| </div> |
| <a name="The SpoolManager, Matchers, and Mailets"></a><div class="section"><h2>The SpoolManager, Matchers, and Mailets</h2> |
| |
| <p>James separates the services that deliver mail to James (i.e. SMTP, FetchMail) |
| from the engine that processes mail after it is received by James. The |
| SpoolManager component is James' mail processing engine. James' SpoolManager component |
| is a Mailet container. It is these mailets and matchers that actually carry out mail processing.</p> |
| |
| <p>More on the structure of the SpoolManager and the Mailet API can be found <a href="spoolmanager.html">here</a>.</p> |
| |
| </div> |
| <a name="Repositories"></a><div class="section"><h2>Repositories</h2> |
| |
| <p>James uses a number of different repositories to both store message data (email, news messages) and |
| user information. User repositories store user information, including user names, authentication |
| information, and aliases. Mail repositories store messages that have been delivered locally. Spool |
| repositories store messages that are still being processed. Finally, news repositories are used to |
| store news messages. Aside from what type of data they store, repositories are distinguished by |
| where they store data. There are three types of storage - File, Database, and DBFile.</p> |
| |
| </div> |
| <a name="RemoteManager"></a><div class="section"><h2>RemoteManager</h2> |
| |
| <p>James provides a simple telnet-based interface for control. Through this interface you can add |
| and delete users, configure per-user aliases and forward addresses, and shut down the server.</p> |
| |
| <p>More on the configuring the RemoteManager can be found <a href="remotemanager_configuration.html">here</a>.</p> |
| |
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