Chapter 43 System

The following table describes the labels in this screen.

Table 235 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.

 

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

 

 

43.5.8 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.

43.5.9 Adding a MX Record

Click the Add icon in the MX Record table to add a MX record.

Figure 493 System > DNS > MX Record Add

The following table describes the labels in this screen.

Table 236 System > DNS > MX Record Add

LABEL

DESCRIPTION

Domain Name

Enter the domain name where the mail is destined for.

 

 

IP Address/FQDN

Enter the IP address or fully qualified domain name of a mail server that handles

 

the mail for the domain specified in the field above.

 

 

 

675

ZyWALL USG 100/200 Series User’s Guide