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Date:      Sat, 27 Jan 2007 10:58:46 -0200
From:      JoaoBR <joao@matik.com.br>
To:        freebsd-stable@freebsd.org
Cc:        Peter Jeremy <peterjeremy@optushome.com.au>
Subject:   Re: Loosing spam fight
Message-ID:  <200701271058.47517.joao@matik.com.br>
In-Reply-To: <20070127041608.GG927@turion.vk2pj.dyndns.org>
References:  <8a20e5000701240903q35b89e14k1ab977df62411784@mail.gmail.com> <200701260924.59674.joao@matik.com.br> <20070127041608.GG927@turion.vk2pj.dyndns.org>

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On Saturday 27 January 2007 02:16, Peter Jeremy wrote:
> On Fri, 2007-Jan-26 09:24:58 -0200, JoaoBR wrote:
> >like I said, for my understandings firewall implemention for spam fighti=
ng
> > is wrong
> >
> >because you reject the message
>
> Except that the original mail was talking about greylisting.  This won't
> reject any mail sent from a MTA that correctly implements SMTP.  According
> to the SMTP specs, I am perfectly at liberty to tell you that I can't
> accept your mail right now, please try again later.


greylisting does not necessarily catch incorrectly implemented SMTP but=20
basicly catch any source not seen before with a correct greeting unless it =
is=20
whitelisted

then, spam is not necessarily incorrectly implemented SMTP and can be an=20
absolute correct email message (within SMTP specs) which then btw is reject=
ed

so the question is, if this is a correct way to handle it, rejecting I mean

also a point to think about, most complains about spam talk about bandwidth=
=20
consumption, by asking for resend later you certainly increase bandwidth=20
consumption and resources on both sides


=2D-=20

Jo=E3o







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