Re: [Asrg] SPF: Objection: spammers will use <>

At 01:22 PM 6/17/2003 +0200, Markus Stumpf wrote:

>On Mon, Jun 16, 2003 at 12:28:25PM -0400, Meng Weng Wong wrote:
> > The original DMP I-D says, in the case of a blank envelope sender,
> > test using the HELO domain instead of the envelope sender domain.
>
>Wow ... how's the weather on your planet?
>Out of 7394 connections on one of our mailservers that is closed to
>customer access 6789 had non matching (the hostname) HELO arguments.
>
>Most HELO arguments are pc01 and the like.
>On our MX mailservers the ration is similar, but of course the are a lot
>of spammers that fake them, but I intentionally made the test on a non
>MX mailserver.
>
>So you want to force about 90% of all mailserver administrators (most of
>the clueless) to change the configuration of their mailserver? Have fun.

Check the RFCs, but I believe that the domain in HELO command cannot be 
relied upon for checking. 

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