PLANET CS-1000 - Manual (Page 182)

Multi-Homing Security Gateway User’s Manual
When LAN (172.16.1.0/16) users send mail from the sender account of planet.com.tw mail server to the
recipient account in external mail server, the configuration should need to add the following mail relay setting:
STEP 1 Add the first setting in Mail Relay function of Configure:
„ Select Domain Name of Internal Mail Server
„ Domain Name of Mail Server: Enter the Domain Name
„ IP Address of Mail Server: Enter the IP address that Mail Server’s domain name mapped
to.
STEP 2 Add the second setting in Mail Relay function of Configure:
„ Select Allowed External IP of Mail Relay
„ IP Address: Enter the IP Address of external sender
„ Enter the Netmask
„ Complete Mail Relay setting
Example 3: The Headquarters setup CS-1000 as Gateway (Mail Server in DMZ, Transparent Mode) to
make the Branch office’s employees can send mails via Headquarters’ Mail Server
Preparation:
WAN Port IP of CS-1000: 61.11.11.11
Mail Server IP: 61.11.11.12
WAN Port IP of the Branch office’s Firewall: 211.22.22.22
Map the DNS Domain Name (planet.com.tw) to DNS Server IP (setup MX record is Mail Server IP)
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