I would like first of all, to thank every one who helped me in my exchange
questions regarding the disaster receover .
Now, we are decide to use a nother setup for exchange server as the
following :-

I have setup my SMTP virtual server (default) for mail relaying. It is
set to use integrated auth and all the setting are fine. The mail I am
programatically trying to use using SmtpClient from System.Net.Mail is
also going thru without any exceptions. the problem is that the mails

I just installed a FE server with exch 2000 on server 2003.  The http virtual
directory on the BE server points to the M:/ drive.  The http virtual
directory on the FE server also points to the local M:/mbx drive.  Now when I
try to access email via http, the get a 404 error.  I ...

With Outlook Express and Exchange its possible to access a Mailbox with
following syntax:
Domain/User/Mailbox where mailbox can be every mailbox from every User where
we habe the rights to read them.