User manual

Advanced DNS
Cobalt RaQ 4 User Manual 187
5. A zone transfer allows another DNS server to download the complete list of
hosts maintained by your DNS server. By default, zone transfers are
unrestricted. However, you can restrict zone transfers if you want.
Enter IP addresses or network addresses in the Zone Transfer Access field;
this automatically causes zone transfers to become restricted. Now, only the
IP addresses or network addresses listed in this field are able to perform zone
transfers.
6. Click Save Changes.
7. Click Save Changes to DNS Server.
Start of Authority (SOA) configuration
For the best reliability, you can fine tune all primary domain and network
authority settings independently of each other.
To fine tune the primary domain and network authorities:
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 an authoritative domain or network from the Select a Domain or
Network... pull-down menu.
The first record in the record list is called the Start of Authority (SOA)
record.
4. Click the green pencil icon to modify the SOA record.
The SOA record defaults to acceptable values in the majority of RaQ 4
configurations. You can fine tune the values for the following parameters:
• Primary name server host name
• Secondary name server host name (optional)
• Domain administrator email address
• Refresh interval
• Retry interval
• Expire interval
• Time-to-live (TTL) interval
5. Click Save Changes.
6. Click Save Changes to DNS Server.