On Sun, Jan 27, 2002 at 07:41:07PM -0800, Pawel Rogocz wrote:
> It is not a big deal, but can somebody explain,
> why there is an extra space after 'Open relay.'
> in the second message ?
>
> Pawel
>
> From double-bouncexxxxxx.com Sun Jan 27 18:55:04 2002
> Return-Path: <double-bouncexxxxxx.com>
> Delivered-To: rootxxxxxx.com
> Received: by linux.xxxxxx.com (SMTP) via NOTICE
> id 9601BB0593; Sun, 27 Jan 2002 18:55:04 -0800 (PST)
> Date: Sun, 27 Jan 2002 18:55:04 -0800 (PST)
> From: MAILER-DAEMONxxxxxx.com (Mail Delivery System)
> To: postmasterxxxxxx.com (Postmaster)
> Subject: SMTP SMTP server: errors from unknown[211.43.188.244]
> Message-Id: <20020128025504.9601BB0593linux.xxxxxx.com>
>
> Transcript of session follows.
>
> Out: 554 Service unavailable; [211.43.188.244] blocked using inputs.orbz.org,
> reason: Open relay. Please see http://orbz.org/?211.43.188.244
>
> Session aborted, reason: lost connection
>
> From double-bouncexxxxxx.com Sun Jan 27 18:57:25 2002
> Return-Path: <double-bouncexxxxxx.com>
> Delivered-To: rootxxxxxx.com
> Received: by linux.xxxxxx.com (SMTP) via NOTICE
> id 47E10B058E; Sun, 27 Jan 2002 18:57:25 -0800 (PST)
> Date: Sun, 27 Jan 2002 18:57:25 -0800 (PST)
> From: MAILER-DAEMONxxxxxx.com (Mail Delivery System)
> To: postmasterxxxxxx.com (Postmaster)
> Subject: SMTP SMTP server: errors from unknown[211.43.188.244]
> Message-Id: <20020128025725.47E10B058Elinux.xxxxxx.com>
>
> Transcript of session follows.
>
> Out: 554 Service unavailable; [211.43.188.244] blocked using inputs.orbz.org,
> reason: Open relay. Please see http://orbz.org/?211.43.188.244
>
> Session aborted, reason: lost connection

inputs.orbz.org has 20 name servers. Normally all nameservers return
the exact result for a given query, but for
244.188.43.211.inputs.orbz.org (the name looked up for ORBZ queries of
211.43.188.244), 205.231.149.24 returns a TXT record with one space,
while 63.169.206.2 returns a TXT record with two spaces. I did not
check the other 18 name servers.

Since those inputs.orbz.org records have a short TTL, your local DNS
cache needs to contact an inputs.orbz.org nameserver again when doing
a new lookup. In the first case, the DNS cache asked a name server that
was returning TXT records with one space. In the second case, the DNS
cache asked a name server that was returning TXT records with two
spaces.
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