From: Devdas Bhagat (devdasdvb.homelinux.org)
Date: Thu Jun 02 2005 - 02:49:33 CDT

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On 02/06/05 09:30 +0200, Sipos Gabor wrote:
> Hello all,
>
> I was just wondering (since at the current state of debian I'm still
> stuck with postfix 1.1) about the spamhaus dnsbl lists. Our internet
> connection goes through a governmental firewall, which is also an smtp
> gateway. Every mail that tries to get in here goes thru that gateway,
> and thus all mails here appear to be coming from their machine (the
> first Received: header states that). Also, the firewall consists of at
> least 5 machines, so the messages appear to be coming from
> fw1.their.dom, fw2.their.dom, etc. The remaining received: headers
> are left intact, so viewing the message source I can tell where the
> message really originated from.
>
> Will this work with automated tools like spamhaus dnsbl and xbl lists?
>
No. DNSBLs are designed to be run on the edge gateways. Once the message
is accepted, deliver (possibly tagged), or discard. Do not bounce.

Devdas Bhagat

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