User manual

Appendix D: Domain Name System

182 Cobalt RaQ 4 User Manual

Specifying an alias (CNAME) record

This feature allows you to alias one host name to another. The target host name

does not need to be a member of the local domain. For example, you can create

an alias record from “news.domain.com” to “uucp.isp.net”.

To specify an alias (CNAME) record:

1. On the Server Management screen, click Control Panel. The Service

Settings table appears.

2. Click Parameters next to the DNS service in the Service Settings table.

3. Select Alias (CNAME) from the Add... pull-down menu.

4. Enter the host name and domain name for which you want to create an alias

(for example, www and mydomain.com) and enter the host name and

domain name for the target. The target host name is optional.

5. Click Update List.

6. Click Save Changes to DNS Server.

Conﬁguring a secondary DNS server

As the RaQ 4 Administrator, you can conﬁgure a secondary DNS server to

provide redundant DNS service to your computers. If the primary DNS server is

turned off, a computer can use the secondary DNS server with no loss of

performance.

Caution: Do not use an Alias (CNAME) Record to cause a domain

name to resolve to a host name.

For example, do not create an Alias (CNAME) Record for

mydomain.com that resolves to www.mydomain.com. Instead, add

a new Address (A) Record for mydomain.com to the IP address

used by www.mydomain.com. See “Conﬁguring a primary DNS

server” on page 180.