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Chapter 2 DNS Service 25
Modifying a Zone
This section describes modifying a zone’s type and settings but not modifying the
records within a zone. You may need to change a zone’s administrator address, type, or
domain name.
To modify a zone:
1 In Server Admin, choose DNS in the Computer & Services list.
2 Click Settings.
3 Select the Zones tab.
4 Click the Edit button beneath the Zones list.
5 Change the zone name, type, or administrator email address as needed.
For more information on zone types, see “Managing Zones” on page 22.
6 Click OK, and click Save.
Deleting a Zone
The section describes how to delete an existing zone. This deletes the zone and all the
records associated with it.
To delete a zone:
1 In Server Admin, choose DNS in the Computer & Services list.
2 Click Settings.
3 Select the Zones tab.
4 Click the Delete button beneath the Zones list.
5 Click Save to confirm the deletion.
Managing Records
Each zone contains a number of records. These records are requested when a client
computer needs to translate a domain name (like www.example.com) to an IP number.
Web browsers, email clients, and other network applications rely on a zone’s records to
contact the appropriate server.
The master zone’s records will be queried by others across the Internet so they can
connect to your network services. There are several kinds of DNS records. The records
which are available for configuration by Server Admin’s user interface are:
• Address (A): Stores the IP address associated with a domain name.
• Canonical Name (CNAME): Stores the “real name” of a server when given a “nickname”
or alias. For example, mail.apple.com might have a canonical name of
MailSrv473.apple.com.
• Mail Exchanger (MX): Stores the domain name of the computer that is used for email
in a zone.
LL2351.Book Page 25 Monday, September 8, 2003 2:47 PM