SMC Networks BR21VPN - annexe 1 Manual page 190

Set a Mail Server to allow the internal and external users to receive
and send e-mail under DMZ Transparent Mode
STEP 1﹒Set a Mail Server in DMZ and set its network card's IP Address as
61.11.11.12. The DNS setting is external DNS Server.
STEP 2﹒Add the following setting in DMZ of Address function: (Figure12-26)
Figure12-26 the Mail Server's IP Address Corresponds to Name Setting in Address Book of Mail
Server
STEP 3﹒Add the following setting in Group of Service function: (Figure12-27)
Figure12-27 Setting up a Service Group that has POP3, SMTP, and DNS
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