It is known that AOL, Hotmail and Yahoo will often fail NOABUSE,
NOPOSTMASTER and REVDNS, as they are not setup nor do they care.

John Tolmachoff MCSE CSSA
Engineer/Consultant
eServices For You
www.eservicesforyou.com

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Matthew Bramble
Sent: Thursday, September 04, 2003 1:36 PM
To: [EMAIL PROTECTED]
Subject: Re: [Declude.JunkMail] Increased AOL, Hotmail, Yahoo, etc. false
positives positives

It's just you :)

The From address is often forged.  The address that matters the most is the
server from which the E-mail came, which is listed in the top of the
headers, i.e.

Received: from declude.com [24.107.232.14] by igaia.com with ESMTP
  (SMTPD32-7.13) id A78F250118; Thu, 04 Sep 2003 15:50:39 -0400
The information in that line in the messages you receive is what is
responsible for tripping most of the tests you indicated (real AOL trips
NOPOSTMASTER for instance).  If you reverse lookup the IPs that you find
there, my bet is that they won't match the domains of the From addresses
they are using.  The software and your filters are actually doing their job
very well if those messages are failing.

Matt



Paul Hung wrote:


Has anyone found that AOL, Hotmail, and Yahoo.com addresses have been
failing on the following tests:  helobogus, nopostmaster, noabuse, revdns 

These e-mails usually fail these four tests, and thus trigger my Weight10
rule.  I performed a reverse DNS lookup on several of the IP addresses and
found that there was no entry for reverse DNS. 

Any ideas?  Is it just me? 


- Paul 

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