Remote host said: 554 Service unavailable

Was sagt die Fehlermeldung genau aus?

Hallo!!
Habe eine email-Adresse bei GMX und wollte heute
eine email an einen lycos-account schicken.
Habe diese Fehlermeldung erhalten, was sagt die genau aus?
Woher kommt diese Fehlermeldung?
Gibts irgendwo ein Verzeichnis zum nachlesen der Fehlermeldungen??

Sorrry, für meine neugierde!!

gruss,

megacarsIT

Hi. This is the qmail-send program at mail.gmx.net.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<m@lycos.de>:
212.78.202.7_does_not_like_recipient./Remote_host_said:_554_Service_unavailable;_Client_host_[213.165.64.20]_blocked_using_list.dsbl.org;_http://dsbl.org/listing?213.165.64.20/Giving_up_on_212.78.202.7./

--- Below this line is a copy of the message.

Return-Path: <s_@unterderbruecke.de>
Received: (qmail 2069 invoked by uid 0); 8 Oct 2005 13:08:20 -0000
Received: from 82.83.229.39 by www51.gmx.net with HTTP;
Sat, 8 Oct 2005 15:08:20 +0200 (MEST)
Date: Sat, 8 Oct 2005 15:08:20 +0200 (MEST)
From: s_@unterderbruecke.de
To: m@lycos.de
Cc: h_@hotmail.com
MIME-Version: 1.0
Subject: test
X-Priority: 3 (Normal)
X-Authenticated: #2375425
Message-ID: <23647.1128776900@www51.gmx.net>
X-Mailer: WWW-Mail 1.6 (Global Message Exchange)
X-Flags: 0001
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
X-GMX-Antivirus: 0 (no virus found)

test

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