Re: [Asrg] [IP] 4 Rivals Almost United on Ways to Fight Spam

["George Ou" <george_ou at netzero.com>]

Ah, good point.  I hope they start doing it soon.

I just can't understand all these people that are vehemently against
authentication.  There are valid arguments on how spammers will work around
the authentication barrier, but I just can't imagine in any circumstance
that authentication would do anything but push us in the right direction.
What in the world could be wrong with any solution that defeats "mail from"
spoofing?  That alone should justify domain level authentication regardless
of whether or not it will directly curtail spam or not.

George


----- Original Message ----- 
From: "Seth Breidbart" <sethb at panix.com>
To: <asrg at ietf.org>
Sent: Friday, June 25, 2004 12:00 PM
Subject: Re: [Asrg] [IP] 4 Rivals Almost United on Ways to Fight Spam


> "George Ou" <george_ou at netzero.com> wrote:
>
> > When the top 500 domains of the world have valid Sender ID (Caller
> > ID + SPF) records, then they can easily collude to exclude any other
> > domain that doesn't have valid Sender ID records.
>
> It won't take 500.  The top 5 would do it.
>
> Especially if their method isn't completely blocking, but greylisting
> (don't publish Sender ID, your mail gets delayed for 1 hour)
> initially, followed as time goes on by increasing the delay, refusing
> a small but increasing percentage of email, etc.
>
> Seth


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