Mr. Hussain,
One basic question -
How does the linux server in the DMZ know
about the exchange server in the LAN. BTW,
we are using Natting with the Sonic Wall.
The situation is that the mail is received
by linux server (with a internet routable
address) and then has to be relayed to the
exchange server in the LAN.
Should I created another public internet
address like "forwardmail.abc.com" and then
map it to the exchange server?
Thanks for your help.
With best regards,
Gerald
--- Basit Hussain <[EMAIL PROTECTED]> wrote:
> You need to use the mailertables located in
> /etc/mail for routing it. Look
> at http://www.sendmail.org/m4/mailertables.html
> for an example.
>
> ----- Original Message -----
> From: Gerald Mattison <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Tuesday, July 25, 2000 12:42 AM
> Subject: SMTP mail relay from DMZ
>
>
> > Can some one help with a problem I am having with
> SMTP
> > mail relay using Sonicwall and Linux server in a
> DMZ.
> >
> > Thanks.
> >
> > Gerald
> >
> > Configuration
> > -------------
> >
> > WAN ||
> > ----------------------
> > gate.abc.com | SonicWall |
> > ----------------------
> > LAN | | DMZ
> > ---- ---
> > exc.abc.com |A| |B| mail.abc.com
> > ---- ---
> >
> > SonicWall is using NATting for the LAN side.
> > With the SonicWall model we have, all servers
> > in DMZ need a routable IP address.
> >
> > A (exc.abc.com) is a Windows NT 4.0 running MS
> > Exchange server. Domain is ABC. All userids
> > within the Exchange Server are configured as
> > [EMAIL PROTECTED]
> >
> > B (mail.abc.com) is a Red Hat Linux Server,
> running
> > SMTP. It has a routable internet address, is
> within
> > the same subnet as the gate.abc.com, and use the
> > same router/WAN gateway address.
> >
> >
> > Problem's experiencing
> > ----------------------
> > Internet mail is being received by the
> mail.abc.com
> > without any problem. However, I cannot figure out
> > how to relay the mail from the Linux server to the
> > Exchange Server on the LAN?
> >
> > Questions
> > ---------
> > 1) Can mail be routed from a server with a
> > routable internet address to a server inside
> > a LAN?
> >
> > 2) If it cannot be routed, is the next best
> > approach to use something like POP3?
> >
> >
> >
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