Apple Mac OS X Server Migration For Version 10.3 or Later Bedienungsanleitung PDF herunterladen (Seite 17)

Chapter 1 Mail Service Setup 17

If you want to change this basic configuration, or if you have not set up your mail

service, these are the major tasks you perform to set up mail service:

Step 1: Before you begin, make a plan

See “Before You Begin” on page 15 for a list of items to think about before you start full-

scale mail service.

Step 2: Set up MX records

If you want users to be able to send and receive mail over the Internet, you should

make sure DNS service is set up with the appropriate MX records for your mail service.

• If you have an ISP that provides DNS service to your network, contact the ISP and

have the ISP set up MX records for you. Your ISP will need to know your mail server’s

DNS name (such as mail.example.com) and your server’s IP address.

• If you use Mac OS X Server to provide DNS service, create your own MX records as

described in “Configuring DNS for Mail Service” on page 14.

• If you do not set up an MX record for your mail server, your server may still be able to

exchange mail with some other mail servers. Some mail servers will find your mail

server by looking in DNS for your server’s A record. (You probably have an A record if

you have a web server set up.)

Note: Your mail users can send mail to each other even if you do not set up MX

records. Local mail service doesn’t require MX records.

Step 3: Configure incoming mail service

Your mail service has many settings that determine how it handles incoming mail. for

instructions, see “Configuring Incoming Mail Service” on page 19.

Step 4: Configure outgoing mail service

Your mail service also has many settings that determine how it handles outgoing mail.

For instructions, see “Configuring Outgoing Mail Service” on page 22.

Step 5: Secure your server

If your server exchanges mail with the rest of the Internet, make sure you’re not

operating an open relay. An open relay is a security risk and enables junk-mail senders

(spammers) to use your computer resources for sending unsolicited commercial email.

For instructions see “Limiting Junk Mail” on page 29, and “Restricting SMTP Relay” on

page 30.

Step 6: Configure additional settings for mail service

Additional settings that you can change affect how mail service stores mail, interacts

with DNS service, limits junk-mail (spam), and handles undeliverable mail. See the

following sections for detailed instructions:

• “Working With the Mail Store and Database” on page 35

• “Limiting Junk Mail” on page 29

• “Working With Undeliverable Mail” on page 42

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Apple Mac OS X Server Migration For Version 10.3 or Later Bedienungsanleitung Seite 17