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Chapter 37 System
ZyWALL 110/310/1100 Series User’s Guide
454
Figure 300 Configuration > System > DNS > Domain Zone Forwarder Add
The following table describes the labels in this screen.
37.6.8 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.
37.6.9 Adding a MX Record
Click the Add icon in the MX Record table to add a MX record.
Table 181 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