Hardware manual

Chapter 2 Inside Mac OS X Server 43
Mail Service
Mac OS X Server provides an enterprise-capable mail server, which supports the SMTP,
POP, and IMAP protocols, allowing you to select a local or server-based mail storage
solution for server users.
Outgoing mail (SMTP) has these features:
 The SMTP mail transfer agent is based on Postfix. For complete information about
this open-source agent, see www.postfix.org/.
 Authentication using the following methods is available: PLAIN, LOGIN, CRAM-MD5,
and Kerberos v5.
Incoming mail (POP and IMAP) highlights include these:
 The mail access agent is a Cyrus POP and IMAP server. See asg.web.cmu.edu/cyrus/
for information about this agent.
 Authentication supported for IMAP is clear text, PLAIN, LOGIN, CRAM-MD5, and
Kerberos v5. POP authentication options are clear text, APOP, and Kerberos v5.
 The mail database is extremely fast.
 Vacation rules and quotas for individual users are available.
 Mailman is used to create and maintain mailing lists.
Mail service protects your users from junk mail and other annoying or unauthorized
messages. You can define filters that help you minimize junk mail and viruses, filter out
unsolicited commercial email, and detect messages that contain particular content.
Junk mail filtering, based on the powerful SpamAssassin, includes an autolearning
option.
Flexible quotas let you set custom warning levels for user mail disk consumption and
define customized warning messages. You can set up to three different warning levels
based on percent of mail quota consumed. When a user has exceeded a certain quota
level, the system sends an email warning with either a default message or a custom
message. You can optionally enforce user quotas by denying new mail delivery for
users who have exceeded their quota.
Virtual host support lets a single server host several different email domains.
For example, your server can host email accounts for [e-mail] and
[e-mail].
Mac OS X Server also includes SquirrelMail for web-based mail retrieval. For information
about SquirrelMail, see www.squirrelmail.org.
The mail service administration guide tells you how to set up and manage mail service.
The web technologies administration guide describes how to enable WebMail, the
server’s implementation of SquirrelMail.