Mx Record; Adding A Mx Record - ZyXEL Communications USG40 User Manual

The following table describes the labels in this screen.
Table 352 Configuration > System > DNS > Domain Zone Forwarder Add
LABEL
Domain Zone
DNS Server
OK
Cancel

43.6.10 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.

43.6.11 Adding a MX Record

Click the Add icon in the MX Record table to add a MX record.
Figure 579 Configuration > System > DNS > MX Record Add
Chapter 43 System
DESCRIPTION
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/USG 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).
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/USG 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/USG's local networks. You cannot use 0.0.0.0. Use the Query via
field to select the interface through which the ZyWALL/USG 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/USG 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.
Click OK to save your customized settings and exit this screen.
Click Cancel to exit this screen without saving
ZyWALL/USG Series User's Guide
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