Chapter 45 System

The following table describes the labels in this screen.

Table 215 Configuration > System > DNS > Domain Zone Forwarder Add

LABEL

DESCRIPTION

Domain Zone

A domain zone is a fully qualified domain name without the host. For

 

example, zyxel.com.tw is the domain zone for the www.zyxel.com.tw

 

fully qualified domain name. For example, whenever the ZyWALL

 

receives needs to resolve a zyxel.com.tw domain name, it can send a

 

query to the recorded name server IP address.

 

Enter * if all domain zones are served by the specified DNS server(s).

 

 

DNS Server

Select DNS Server(s) from ISP if your ISP dynamically assigns DNS

 

server information. You also need to select an interface through which

 

the ISP provides the DNS server IP address(es). The interface should be

 

activated and set to be a DHCP client. The fields below display the

 

(read-only) DNS server IP address(es) that the ISP assigns. N/A

 

displays for any DNS server IP address fields for which the ISP does not

 

assign an IP address.

 

Select Public DNS Server if you have the IP address of a DNS server.

 

Enter the DNS server's IP address in the field to the right. The ZyWALL

 

must be able to connect to the DNS server without using a VPN tunnel.

 

The DNS server could be on the Internet or one of the ZyWALL’s local

 

networks. You cannot use 0.0.0.0. Use the Query via field to select the

 

interface through which the ZyWALL sends DNS queries to a DNS

 

server.

 

Select Private DNS Server if you have the IP address of a DNS server

 

to which the ZyWALL connects through a VPN tunnel. Enter the DNS

 

server's IP address in the field to the right. You cannot use 0.0.0.0.

 

 

OK

Click OK to save your customized settings and exit this screen.

 

 

Cancel

Click Cancel to exit this screen without saving

 

 

45.5.8 MX Record

A MX (Mail eXchange) record indicates which host is responsible for the mail for a particular domain, that is, controls where mail is sent for that domain. If you do not configure proper MX records for your domain or other domain, external e-mail from other mail servers will not be able to be delivered to your mail server and vice versa. Each host or domain can have only one MX record, that is, one domain is mapping to one host.

 

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ZyWALL USG 50 User’s Guide