Managing sendmail Services in Oracle® Solaris 11.2

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Updated: July 2014

Overview of the Hardware Components

A mail configuration requires three elements, which you can combine on the same system or provide in separate systems.

  • A mail host – A system that is configured to handle email addresses that are difficult to resolve

  • A minimum of one mail server – A system that is configured to hold one or more mailboxes

  • Mail clients – Systems that access mail from a mail server

If users are to communicate with networks outside your domain, you must also add a fourth element, a mail gateway.

Figure 1–1 shows a typical electronic mail configuration, using the three basic mail elements plus a mail gateway.

Figure 1-1  Typical Electronic Mail Configuration

image:Diagram shows the dependencies between a mail gateway, a mail host, mail servers, mailboxes, clients.

Each element is described in detail in Hardware Components.