ZyXEL Communications NXC5500 - Add MX Record; MX Record

Chapter 29 System
NXC Series User’s Guide
344
The following table describes the labels in this screen.
29.6.8 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.
29.6.9 Add MX Record
Click the Add icon in the MX Record table to add a MX record.
Figure 203 Configuration > System > DNS > Add MX Record
The following table describes the labels in this screen.
Table 170 Configuration > System > DNS > Add Domain Zone Forwarder
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
NXC 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.
Note: If all interfaces are static, then this field is hidden.
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 NXC must be able to connect to the DNS server. The DNS
server could be on the Internet or one of the NXC’s local networks. You cannot use 0.0.0.0. Use
the Query via field to select the interface through which the NXC sends DNS queries to a DNS
server.
OK Click OK to save your customized settings and exit this screen.
Cancel Click Cancel to exit this screen without saving.
Table 171 Configuration > System > DNS > Add MX Record
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 (FQDN) of a mail server that handles the
mail for the domain specified in the field above.