[98205] in RedHat Linux List
Re: Sendmail problem ?
daemon@ATHENA.MIT.EDU (Steve Glines)
Sat Nov 7 10:59:47 1998
Date: Sat, 07 Nov 1998 10:59:24 -0500
From: Steve Glines <sglines@sglines.shore.net>
To: redhat-list@redhat.com
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
The simplest way to do this is to define your "smart host" to be your
ISP and your "Local relay", (L_RELAY) to be "Mail-rly." This will do
what you want.
SG
"Mike A. Lewis, CNE" wrote:
>
> This will be a fairly long message in order to explain it completely :-(
>
> What I'm trying to setup is a mail relay inside a DMZ. The configuration
> looks something like this:
>
> ISP --------------------- firewall ---------------------- Mail-rly
> |
> |
> |
> |
> Mailhost.company.com
>
> What is happening is:
>
> 1. Mail can be sent from Mail-rly to addresses on the Internet.
> 2. Mail from Internet is sent (and queued) at Mail-rly (but not
> delivered to mailhost.company.com)
> 3. Mail sent from Mailhost.company.com (status=not certain where it
> goes, but it is not delivered)
>
> I believe I have a mail loop between Mail-rly and my ISP. This COULD be
> because of rules in the firewall, but I'm not totally certain that I have
> the /etc/sendmail.cf file setup correctly.
>
> Here's the question: _ASSUMING THERE IS NOT A RULE PROBLEM ON THE
> FIREWALL_, here are the portions of /etc/sendmail.cf that I have changed.
> Are these correct to do what I'm trying to accomplish ?
>
> TIA,
>
> Mike
>
> Portions of /etc/sendmail.cf
>
> Cwlocalhost
> # file containing names of hosts for which we receive email
> Fw/etc/sendmail.cw (**************** this file does not
> exist ******************)
>
> # "Smart" relay host (may be null)
> DS
>
> # who I send unqualified names to (null means deliver locally)
> DRmailhost.company.com
>
> # who gets all local email traffic ($R has precedence for unqualified names)
> DHmailhost.company.com
>
> # who I masquerade as (null for no masquerading) (see also $=M)
> DM
>
>
>
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