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Re: draft-elvey-refuse-sieve-02.txt; http://wiki.fastmail.fm/wiki/index.php/Sieve ExtensionsSupportMatrix

Cyrus Daboo <daboo@isamet.com> Tue, 10 August 2004 23:51 UTC

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Date: Tue, 10 Aug 2004 19:51:55 -0400
From: Cyrus Daboo <daboo@isamet.com>
To: Kjetil Torgrim Homme <kjetilho@ifi.uio.no>, ietf-mta-filters@imc.org
Subject: Re: draft-elvey-refuse-sieve-02.txt; http://wiki.fastmail.fm/wiki/index.php/Sieve ExtensionsSupportMatrix
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Hi Kjetil,

--On Wednesday, August 11, 2004 1:33 AM +0200 Kjetil Torgrim Homme 
<kjetilho@ifi.uio.no> wrote:

>> I disagree: just because the text for the two may be different
>> doesn't mean I want to be forced to choose which of the two is done.
>> I would prefer to be able to say "do an SMTP-level reject if you
>> can with _this_ text, else send an MDN with _this_ text".
>
> I think "reject" should be deprecated.  it is never appropriate to send
> an MDN.  the tests available in Sieve today are not sufficient to have
> any chance of avoiding being an accomplice in a joe-job attack.

Well what is the difference between a DSN and an MDN joe-job? The reality 
is that even refuse suffers from this problem as there are several cases 
where refuse results in a DSN joe-job (in fact I think it will be the 
majority of cases). The only way to really address this is to only allow 
discard.

Also this assumes that you are only using sieve for spam filtering, but 
there are other legitimate uses for it!

-- 
Cyrus Daboo

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