| Sun ONE Messaging Server 6.0 Administrator's Guide |
Chapter 1
IntroductionSun ONE Messaging Server is a powerful, standards-based Internet messaging server designed for high-capacity, reliable handling of the messaging needs of both enterprises and service providers. The server consists of several modular, independently configurable components that provide support for several standards-based email protocols.
Messaging Server uses a centralized LDAP database for storing information about users, groups, and domains. Some information about server configuration is stored in the LDAP database; some is stored in a set of configuration files.
The Messaging Server product suite provides tools to support user provisioning and server configuration.
This chapter contains the following sections:
Support for Standard ProtocolsMessaging Server supports most national, international, and industry standards related to electronic messaging. For a complete list, refer to Appendix A of the Sun ONE Messaging Server Reference Manual.
Support for Hosted DomainsMessaging Server provides full support for hosted domains—email domains that are outsourced by an ISP. That is, the ISP provides email domain hosting for an organization by operating and maintaining the email services for that organization remotely. A hosted domain can share the same Messaging Server host with other hosted domains. In earlier LDAP-based email systems, a domain was supported by one or more email server hosts. With Messaging Server, many domains can be hosted on a single server. For each hosted domain, there is an LDAP entry that points to the user and group container for the domain and provides various domain-specific default settings.
Support for User ProvisioningMessaging Server uses a centralized LDAP database for storing information about users, groups, and domains. At this time, Messaging Server supports two schema options, Sun ONE LDAP Schema, v.1 or Sun ONE LDAP Schema, v.2. The provisioning options will depend on which schema you have chosen. (See the Sun ONE Messaging Server Installation Guide for information on these schema choices.)
At this time, Messaging Server provisioning for Sun ONE LDAP Schema, v.2 can only be done using the User Management Utility Installation and Reference Manual.
The Sun ONE LDAP Schema, v.1 is supported by the iPlanet Delegated Administrator for Messaging product which provides a graphical user interface and a set of command-line utilities for managing the users, groups, and domains within an organization. You can also use the following older books for managing users, groups, and domains in Sun ONE LDAP Schema, v.1:
- iPlanet Messaging Server Provisioning Guide - describes how to create domain, user, group, or administrator entries using LDAP.
- iPlanet Messaging Server Schema Reference Manual - describes Sun ONE LDAP Schema, v.1 for the Messaging Server.
- iPlanet Messaging Server Reference Manual - describes the iPlanet Delegated Administrator command line utilities for managing users, groups, and domains.
Support for Unified MessagingSun ONE Messaging Server provides the basis for a complete unified messaging solution: the concept of using a single message store for email, voicemail, fax, and other forms of communication.
Support for WebmailSun ONE Messaging Server includes Messenger Express, a web-enabled electronic mail program that lets end users access their mailboxes using a browser running on an Internet-connected computer system using HTTP. Messenger Express clients send mail to a specialized web server that is part of Messaging Server. The HTTP service then sends the message to the local MTA or to a remote MTA for routing or delivery.
Powerful Security and Access ControlMessaging Server provides the following security and access control features:
- Support for password login and certificate-based login to POP, IMAP, HTTP, or SMTP.
- Support for standard security protocols: Transport Layer Security (TLS), Secure Sockets Layer (SSL) and Simple Authentication and Security Layer (SASL).
- Delegated administration through access-control instructions (ACIs). (Sun ONE LDAP Schema v. 1 only.)
- Client access filters to POP, IMAP, SMTP and HTTP.
- Filtering of unsolicited bulk email using system-wide and per-user and server-side rules.
Convenient User InterfacesMessaging Server consists of several modular, independently configurable components that provide support for email transport and access protocols.
To configure the Message Transfer Agent (MTA), Messaging Server provides a complete set of configuration files stored locally on the server and a set of command-line utilities. To configure the message store and message access services, Messaging Server provides a Console graphical user interface and a complete set of command-line utilities.
For information about how to configure the MTA and configure access to the MTA, see the following chapters in this manual:
See also the Sun ONE Messaging Server Reference Manual.
For information about how to configure the message store and access to the store, see the following chapters in this manual:
See also the Sun ONE Messaging Server Reference Manual.
In addition, you’ll want to review the following chapters in this manual:
- Chapter 2, "Configuring General Messaging Capabilities" describes general Messaging Server tasks—such as starting and stopping services and configuring directory access.
- Chapter 5, "Configuring and Administering Multiplexor Services" describes the Sun ONE Messaging Multiplexor (MMP)—a specialized messaging server that acts as a single point of connection to multiple messaging servers.
Post-Installation Directory LayoutAfter installing the Sun ONE Messaging Server, its directories and files are arranged in the organization described in Table 1-1. The table is not exhaustive; it shows only those directories and files of most interest for typical server administration tasks.
