Hi:
ORDB hatte für den Open-Relay-Check zwei GMX-Adressen verwendet, die
nicht auf SMTP-Auth konfiguriert waren. In der eigenen
Open-Relay-Definition beschreibe ORDB ein solches System aber als einen
Mail-Server, der Nachrichten weiterleite, bei denen weder der Sender noch
der Empfänger ein lokaler Nutzer ist. In den von ORDB dokumentierten Fällen
habe es sich aber eindeutig um local user gehandelt.
May be there IS more to the story, but, it is expected and normal, that
anyone who gets listed as an open relay will claim that they really were
not and that the process was flawed.
In reality, ORDB will send a test message to its own server and watch if it
gets delivered. If the round-trip was successful, then the result is a
pretty convincing case of an open relay.
Bottom line, if ORDB found a way/trick to relay a message - then a spammer
will too. Unless they can show an actual flaw on ORDB's testing method, I
go by the assumption that as long as GMX's server allowed for that way/trick
they rightfully would have been listed.
It is interesting to note that they eventually resubmitted the server
(presumingly after closing that hole) and they were de-listed.
I do agree, that the lack of a real-time operations center of some of the
databases (some don't even offer contact forms) does make them somewhat
risky to use - but when viewed against the daily benefits, it's a risk worth
taking.
Best Regards
Andy
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Markus Gufler
Sent: Wednesday, May 28, 2003 02:14 AM
To: [EMAIL PROTECTED]
Subject: RE: Re: [Declude.JunkMail] observation to share...
I agree completly with scott ,and would like to add that
deleting mail only with rbl test does not mean anything.
Today I've read an article on a german website (c't computer magazine)
http://www.heise.de/newsticker/data/hob-27.05.03-000/
In short there's the information that the big freemailer GMX whas listed
from Sunday evening to Monday in the ORDB blacklist.
GMX some months ago has announced antispam actions since they have the same
problem like msn, aol and co. Last Sunday ORDB has tested a GMX mailserver
positive as an open relay (even if the method of testing is controversial)
GMX was not very happy that ORDB was not reachable over a fast way and
GMX-Admin's has had to fill out the standard form on the ORDB website asking
to be removed as fast as possible.
The result: On Monday a lot of mails was not deliverable because other
mailservers blocked any connection from GMX (based on the ORDB
blacklist)
Markus
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