MBA doesn't fit in MXCOMP. "A mechanism to identify authorized senders for a
domain". Both LMAP and SPF do that. MBA doesn't. MBA identifies if a message
was actually sent by a domain. If MBA works as intended, spammers won't use
it, because by using it, their domains would be promptly recognized and
easily blocked by most mail hosting providers. Assuming MBA is widely
adopted, a picky receiving MTA could choose to only accept mba-authenticated
mails.
Ricardo
----- Original Message -----
From: Yakov Shafranovich <research(_at_)solidmatrix(_dot_)com>
To: Radu Hociung <radu(_dot_)asrg(_at_)ohmi(_dot_)org>
Cc: <spharion(_at_)directnet(_dot_)com(_dot_)br>; <asrg(_at_)ietf(_dot_)org>
Sent: Sunday, March 28, 2004 4:35 PM
Subject: Re: [Asrg] spf
LMAP-related discussions for SPF and other proposals have moved to the
MXCOMP list (http://www.imc.org/ietf-mxcomp/).
Yakov
Radu Hociung wrote:
Unfortunately,
A spammer can just as well set this up. This system does not
discriminate based on the intention or identity of the sender.
Also, I think a good test to any anti-spam proposal is this: Would this
be a sustainable model if it became mainstream?
Your approach relies on a lot of wasted resources at the DNS cache
level; imagine what would happen to Hotmail's caching DNS servers if
they would cache two entries for every 2.5B spam messages they receive
every day?
I didn't like the pop-ups.
I appreciate the effort, though; you may have something, but it needs
more work.
Radu.
--
Radu Hociung
radu(_at_)ohmi(_dot_)org
-----Original Message-----
*From:* asrg-admin(_at_)ietf(_dot_)org
[mailto:asrg-admin(_at_)ietf(_dot_)org] *On Behalf
Of *spharion(_at_)directnet(_dot_)com(_dot_)br
*Sent:* Saturday, March 27, 2004 7:10 AM
*To:* asrg(_at_)ietf(_dot_)org
*Subject:* [Asrg] spf
this is a tentative option to spf, but does not
seem to break forwarding:
http://nucleo.freeservers.com/mba/
have fun. gone, ricardo.
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