Cobalt Digital Inc Cobalt Qube 2, User Manual

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Domain Name System
175
8. Click Update List .
9. Click Save Changes to DNS Server .
Specifying a reverse lookup (PTR) record
A DNS server can also resolve a computer host name to an IP address,
which is known as reverse lookup. The network mask, or subnet size, is
specified by an integer from 8 to 32.
See Table 2 “Network Mask Notation Conversion.” on page 178.
To specify a reverse lookup (PTR) record:
1. On the Administrator screen, click Control Panel . The Service
Settings table appears.
2. Click Parameters next to the DNS service in the Service Settings
table. The DNS Settings table appears.
3. Click Add Reverse Lookup .
4. Enter the host name and domain name you want to serve (for
example, www and yourdomain.com) and enter its IP address (for
example, 192.168.1.1) and network mask (for example, 24).
5. Click Update List .
6. Click Save Changes to DNS Server .
Specifying a mail server (MX) record
To specify a mail server (MX) record:
1. On the Administrator screen, click Control Panel . The Service
Settings table appears.
2. Click Parameters next to the DNS service in the Service Settings
table. The DNS Settings table appears.
3. Click Add Mail Server Lookup .
4. Enter the host name and domain name you want to serve (for
example, www and yourdomain.com). Enter the name of the host
that will exchange the mail for the domain entered in the second
field.
You can also set the priority for mail delivery through a pull-down
menu.
5. Click Update List .
6. Click Save Changes to DNS Server .