Even with all that I don't know if I would ever recommend putting my mailbox server out in the DMZ. Maybe and OWA server or SMTP Gateway, but with a single server doing all, keep it on the trusted network... Ron Oglesby Senior Technical Architect Microsoft MVP, Windows Server RapidApp Office 312.372.7188 Mobile 815.325.7618 email roglesby@xxxxxxxxxxxx -----Original Message----- From: Henry Sieff [mailto:hsieff@xxxxxxxxxxxx] Sent: Monday, February 09, 2004 4:41 PM To: 'thin@xxxxxxxxxxxxx' Subject: [THIN] Re: OT: Exchange placement You need to provide more information: 1) What sort of clients will be hitting your server (POP3/SMTP, IMAP, full exchange clients, OWA) 2) Are these going to be mobile (offsite)users, and if so, how are you going to give them access? Also, what are your security requirements? -----Original Message----- From: Scott [mailto:sreichardt@xxxxxxx] Sent: Monday, February 09, 2004 4:38 PM To: thin@xxxxxxxxxxxxx Subject: [THIN] OT: Exchange placement Im trying to decide whether to put my exchange 2003 server inside the network and map port 25 or put it on the DMZ. Any recommendations? Thanks, Scott