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Date:      Wed, 18 Jul 2001 13:52:30 +0930
From:      Greg Lehey <grog@FreeBSD.org>
To:        BSD Freak <bsd-freak@mbox.com.au>
Cc:        FreeBSD Questions <freebsd-questions@FreeBSD.ORG>
Subject:   Re: Accepting mail from unqualified mail servers
Message-ID:  <20010718135230.I69861@wantadilla.lemis.com>
In-Reply-To: <2c21652c6681.2c66812c2165@mbox.com.au>; from bsd-freak@mbox.com.au on Wed, Jul 18, 2001 at 02:17:05PM %2B1000
References:  <2c21652c6681.2c66812c2165@mbox.com.au>

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On Wednesday, 18 July 2001 at 14:17:05 +1000, BSD Freak wrote:
> Hi all...
>
>
> I need to be able to accept mail from mail servers that are behind a DMZ
> (and hence their hostnames cannot be resolved). It seems by default
> FreeBSD does not accept mail from mail servers who hostname cannot be
> resloved in the public DNS. Is there anyway to modify this behaviour
> (under sendmail on FreeBSD 4.3)? I know this could open me up to spam
> but I need to do this....
>
> Any help would be greatly appreciated.....

The safest way to do this is to add a dummy reverse zone to your DNS,
so that *you* can resolve them and nobody else.

Greg
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