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Chapter 2 Mail Service Setup 23
To start the mail conguration assistant:
1 In Server Admin, select a computer in the Servers list, then select Mail.
If Mail is not listed beneath the server you selected, you must start Mail service.
Click the + button at the bottom of the Servers lists, then select Add Service from
the pop-up list.
2 Click the Congure Mail Service button to start the assistant.
3 Follow the onscreen instructions.
To congure Mail service manually:
To change Mail service manually, complete the following:
1 Make a plan.
For a list of items to think about before you start full-scale Mail service, see “Before You
Begin” on page 20.
2 Set up MX records.
For users to send and receive mail over the Internet, make sure DNS service is set up
with the relevant MX records for Mail service:
If an ISP provides DNS service to your network, contact the ISP and have them set Â
up MX records for you. Your ISP needs 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 MX records as described Â
in “Conguring DNS for Mail Service” on page 21.
If you do not set up an MX record for your mail server, your server might still be Â
able to exchange mail with other mail servers. Some mail servers will nd 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.
3 Congure incoming Mail service.
Mail service has many settings that determine how it handles incoming mail.
For instructions, see “Conguring Incoming Mail Service” on page 29.
4 Congure outgoing Mail service.
Mail service has many settings that determine how it handles outgoing mail.
For instructions, see “Conguring Outgoing Mail Service” on page 26.
5 Secure your server.
If your server exchanges mail over the Internet, make sure you’re not operating an
open relay. An open relay is a security risk and enables junk mail senders to use your
computer resources for sending unsolicited commercial mail. For instructions see
“Restricting SMTP Relay” on page 31.