I would say behind in the Firewall and do One to One NAT, which maps a Public IP to the Private IP. Then open SMTP and POP3 traffic generated from the Internet to that Private IP. >>> alex@xxxxxxxx 02/21/02 12:51PM >>> http://www.MSExchange.org/ Hello all, Where do I place Exchange 2000 server in reference to 3-interface firewall (SonicWALL with DMZ)? Should it be on the private network or in DMZ? Thank you for the help Alex Randjelovic IT Manager MagiTech, Inc. ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: elanyon@xxxxxxx To unsubscribe send a blank email to leave-exchangelist-668870R@xxxxxxxxxxxxx