ZyXEL Communications ISG50 User Manual
Chapter 52 System
ISG50 User’s Guide
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52.6.7 Adding a Domain Zone Forwarder
Click the Add icon in the Domain Zone Forwarder table to add a domain zone forwarder record.
Figure 448
Configuration > System > DNS > Domain Zone Forwarder Add
The following table describes the labels in this screen.
52.6.8 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
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
Table 271
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 ISG50 receives needs to resolve a
zyxel.com.tw domain name, it can send a query to the recorded name server IP
address.
zyxel.com.tw is the domain zone for the www.zyxel.com.tw fully qualified
domain name. For example, whenever the ISG50 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.
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 ISG50 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 ISG50’s local networks. You cannot use 0.0.0.0.
Use the Query via field to select the interface through which the ISG50 sends
DNS queries to a DNS server.
DNS server's IP address in the field to the right. The ISG50 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 ISG50’s local networks. You cannot use 0.0.0.0.
Use the Query via field to select the interface through which the ISG50 sends
DNS queries to a DNS server.
Select Private DNS Server if you have the IP address of a DNS server to which
the ISG50 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.
the ISG50 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