Apple Mac OS X Server Migration For Version 10.3 or Later Manual do Utilizador descarregar pdf (Página 14)

14 Chapter 1 Mail Service Setup

Configuring DNS for Mail Service

Configuring DNS for mail service is enabling MX records with your own DNS server. If

you have an ISP that provides you with DNS service, you will need to contact the ISP so

that they can enable your MX records. Only follow these steps if you provide your own

DNS Service using Mac OS X Server.

To enable MX records:

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

2 Click Settings.

3 Select the Zones tab.

4 Select the Zone you want to use.

5 Click the Add button under the Records pane.

6 Choose MX from the Type pop-up menu.

7 Enter the domain name (like ‘example.com’) in the From field.

8 Enter the name of the mail server (like ‘mail.example.com’) in the To field.

9 If you will have more than one mail server, enter a precedence number for that server.

A lower number indicates that mil server will be chosen first, if available, to receive

mail.

10 Click OK.

If you need to set up multiple servers for redundancy, you will need to add additional

MX records. See the network services administration guide for more information.

How Mail Service Uses SSL

Secure Sockets Layer (SSL) connections ensure that the data sent between your mail

server and your users’ mail clients is encrypted. This allows secure and confidential

transport of mail messages across a local network. SSL transport does not provide

secure authentication, just secure transfer from your mail server to your clients. See the

Open Directory administration guide for secure authentication information.

For incoming mail, the mail service supports secure mail connections with mail client

software that requests them. If a mail client requests an SSL connection, the mail

service can automatically comply, if that option has been enabled. The mail service still

provides non-SSL (unencrypted) connections to clients that don’t request SSL. The

configuration of each mail client determines whether it connects with SSL or not.

For outgoing mail, the mail service supports secure mail connections between SMTP

servers. If an SMTP server requests an SSL connection, the mail service can

automatically comply, if that option has been enabled. The mail service still can allow

non-SSL (unencrypted) connections to mail servers that don’t request SSL.

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Apple Mac OS X Server Migration For Version 10.3 or Later Manual do Utilizador Página 14