PLANET BM-2101 - Manual (Page 209)

Sets a mail server in the DMZ by TRANSARENT mode , and to permit the internal and
external user to send and receive e-mail.
Step1. In DMZ , to set a mail server , and the IP is 61.11.11.12 . The DNS set to
correspond to the external DNS server .
Step2. In Address Æ DMZ , add the following settings
To set the mail server correspond to the IP address
Step3. In Service Æ Group , add the following settings
To set up the service group included the POP3 , SMTP and DNS