Hi, I'm setting up a linux box to be mailserver, proxy, and DNS for my company. I'm still having trouble with t1he DNS, (some servers see me, some doesn't).

Right now we're working using the same configuration (a server for mail and proxy for the whole company) but using MS Exchange. Thanks to their absurd pricing policy, we decided to switch to a reliable, better and free solution, like linux. There is another Windows NT machine with all the user accounts, to log in to the Windows Network. Using that login and password, they also log to the proxy, which, as I said, it's on another NT Machine. Every person belongs to a group, for differential internet access. (Controling their services, some can use only port 80, some can use others...).

I'm kind of new on this whole networking thing, so I'm lost here. (I didn't set up the server I just mentioned). What I want to do is to replace the Windows machine with this neat linux box. Mailserver and DNS are running (DNS not the best way, but at least it works), and I want to setup the proxy and switch ASAP. But, I don't know how to do this step .... How to make the windows (the users) server to "see" and "login" to the linux machine, and use it as their proxy? How to make the same group-based (different priviledges) internet access thing? Will Samba do this? (as far as I understand, Samba is to share files, but I want to share services)

My linux machine has two eth cards, one for the internet access, and the other one to plug it to the windows machine. Distribution is RH 7.1.

Thanks for your help,

Rafael

PS.
I'm still stuck with the DNS problem. Please check my message about it if you want to help me. (Page 3, subject: DNS misconfiguration or what is wrong here?http://www.linuxquestions.org/questi...&threadid=8245 )