I have a router(linksys wireless-G) serves as gateway for my internet connection. 2 PC are connected to the router, 1 win XP, and 1 debian sarge. Another NAS (synology DS-101g+)is also attached to the router, which is run as ftp server and web server. I try to sey-up my debian to be a mail server, but failed to telnet the stmp even within my debian machine. Wondering if my debian should avoid running behind the router in order to be a mail server ?

I have been working on this maater for quite sometime and still could not get it work. Thinking of paying a debain technician to help me. Any advice ?