Planet MH-4000 User Manual page 188

The alias name, host23.planet.com.tw may map into the formal name, host5.planet.com.tw. So
when user ping host23.planet.com.tw, it'll get the IP Address, 61.11.11.14.
3. MX
"MX" stands for Mail Exchange Server. This mechanism would inquire about the mail server. The
advantage is that the System Administrator may change the mail server via updating the DNS
Record here. And the remote mail server doesn't need to care to communicate with which mail
server. For example, this mechanism is provided for the service of Internet Email for special DNS
record.
host25.planet.com.tw
Enter the command in DOS, nslookup-type-MX mail.planet.com.tw ( nslookup is the command of
DNS query, -type is the type of DNS Record and mail.planet.com.tw is the querying DNS Name),
the result show the Mail Exchange Server (host25.planet.com.tw) which is mapping into the
mail.planet.com.tw and the IP Address (211.22.22.24) of the server (host25.planet.com.tw).
If the engineer of Customer Service Center may send an E-Mail to the customer,
support@planet.com.tw. The engineer may send the mail via test.com.tw as SMTP Server. And
the server (test.com.tw) could decide how to send the mail to the server (mail.planet.com.tw) via
DNS Request. The server will send E-mail via the destination server of host3.planet.com.tw. (Via
SMTP Protocol)
Name: Enter the service name before the Domain Name, it can be defined by user.
Address: The IP address of WAN port for remote user to connect to local server.
Reverse: Use IP Address to reverse the Domain Name. There're 2 mechanisms for DNS Mapping, Reverse
and Forward. Here's an example of Forward. By entering www.planet.com.tw, the DNS Server may convert
the Domain Name into 203.70.249.1. The opposite method is Reverse.
Balance Mode: There are two balance mode:
Round-Robin: According to specific weight and priority to distribute the load sharing from WAN to
LAN.
Backup: After selecting the backup mode, if the defined WAN port of MH-4000 encounters
disconnection, the device will return this IP address for future DNS inquiry.
Click OK to confirm the configuration and Cancel to discard.
Advanced Introduction
Announcement the domain name is managed by which DNS Server. All the records about that domain name
could be queried in this primary DNS Server, for example, the domain name or IP Address of website, or the
Host23.planet.com.tw
Domain Name
mail.planet.com.tw
Multi-Homing Security Gateway User's Manual
CNAME Host5.planet.com.tw
Type IP Address
A 211.22.22.24
MX host25.planet.com.tw
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