Apple Mac OS X Server Version 10.4 or Later Manual do Utilizador descarregar pdf (Página 59)

Chapter 2 Mail Service Maintenance 59

Reloading Mail Service

Sometimes it’s necessary to reload the mail server for mail service setting changes to

take effect, for example, after restoring from backup, or altering the alias file. Reloading

the mail service can be done without interrupting current mail service.

To reload outgoing mail service:

1 Start Terminal.

2 As root, enter the following command:

postfix reload

Changing Protocol Settings for Incoming Mail Service

You can change the settings for your incoming mail service. By choosing POP3, IMAP, or

both.

1 In Server Admin, select Mail in the Computers & Services pane.

2 Click Settings.

3 Click the General tab.

4 Enable or disable the IMAP or POP checkbooks as needed.

Improving Performance

Mail service needs to act very fast for a short period of time. It sits idle until a user

reads or sends a message, then it transfers the message immediately. Therefore, it puts

intense but brief demands on the server. As long as other services do not place heavy

continuous demands on a server (as a QuickTime streaming server would, for example),

the server can typically handle several hundred connected users.

As the number of connected mail users increases, the demand of mail service on the

server increases. If your mail service performance needs improvement, try the

following:

• Adjust the load mail users can put on your server by limiting the number of mail

connections. For instructions, see “Enabling IMAP Access” on page 27.

• Move the mail storage location to its own hard disk or hard disk partition. For

instructions, see “Specifying the Location for the Mail Database and Mail Store” on

page 62.

• Run other services on a different server, especially services that place frequent heavy

demands on the server. (Each server requires a separate Mac OS X Server license.)

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Apple Mac OS X Server Version 10.4 or Later Manual do Utilizador Página 59