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 :: Mailing Lists

[ILUG] SA strangeness - wrongly triggering rules

[ILUG] SA strangeness - wrongly triggering rules

Niall O Broin niall at linux.ie
Thu Dec 30 23:16:03 GMT 2004


I've received complaints that mail from a particular AOL user to an 
account on a server of mine using Postfix + SA is being wrongly marked 
as spam. I asked the AOL user to copy me some of the offending emails 
but that turned out not to be necessary, as even a simple reply from 
him to me gets marked as spam. An extract from the analysis from one 
such mail is below:

> Content analysis details:   (8.2 points, 5.0 required)
>
>  pts rule name              description
> ---- ---------------------- 
> --------------------------------------------------
>  2.9 NO_RDNS_DOTCOM_HELO    Host HELO'd as a big ISP, but had no rDNS
>  1.8 FAKE_HELO_AOL          Host HELO did not match rDNS: aol.co

However, the headers of the original mail include these:

> Return-Path: <ThePhantom at aol.com>
> Received: from imo-m21.mx.aol.com (unknown [64.12.137.2])
> 	by mail.magicgoeshere.com (Postfix on Linux) with ESMTP id 656C6201B
> 	for <niall at archivease.com>; Thu, 30 Dec 2004 21:03:26 +0000 (GMT)
> Received: from ThePhantom at aol.com
> 	by imo-m21.mx.aol.com (mail_out_v37_r3.8.) id z.1df.31fab18a (1320)
> 	 for <niall at archivease.com>; Thu, 30 Dec 2004 16:03:20 -0500 (EST)
> From: ThePhantom at aol.com
> Message-ID: <1df.31fab18a.2f05c718 at aol.com>
> Date: Thu, 30 Dec 2004 16:03:20 EST

Given the Received: line there, I'm at a loss as to how the mail 
triggered NO_RDNS_DOTCOM_HELO and FAKE_HELO_AOL. Any ideas? SA version 
2.63 BTW.



Niall





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