Re: Blacklisted on MAPS RSS HELP!!!

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From: Anthony Edwards (anthony.edwards_at_uk.easynet.net)
Date: 09/15/04 

Date: Wed, 15 Sep 2004 09:06:20 -0000

On Tue, 14 Sep 2004 19:39:57 -0700, bernardl
<anonymous@discussions.microsoft.com> wrote:
> My Exchange 2000 server is blacklisted. Run relay tests
> and they all come back as a closed relay, except for when
> its run from the MAPS RSS site.
>
> How could this be possible and how do I fix it?

The MAPS test may be a good deal more comprehensive than some others.
To be truly conclusive, an open relay test needs to attempt to relay
mail through the server being tested in a number of different ways.
Some servers which appear at first site to be secure actually aren't,
if the sender of Unsolicited Bulk Email uses one or more fairly well
known tricks to defeat the relaying restrictions.

In addition, it is possible that your server isn't a conventional open
relay at all, but a machine vulnerable to SMTP AUTH hijacking as
explained at:

http://www.spamhaus.org/rokso/evidence.lasso?rokso_id=ROK2669
http://www.thinkcomputer.com/corporate/news/releases/11122003.html
http://www.spamcop.net/fom-serve/cache/372.html
http://www.winnetmag.com/article/articleid/42406/42406.html

Does the output of the MAPS RSS test provide technical detail concerning
the results that it is submitting to you? 

-- 
Anthony Edwards              *     anthony.edwards@uk.easynet.net
Abuse Team Manager           *     Tel: 0800 053 0588
Easynet Ltd                  *     DDI: 0161 227 0707
http://www.uk.easynet.net    *     Fax: 0845 333 4503

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