Re: [dmarc-discuss] FBL via DMARC?

2016-11-30 Thread John Levine via dmarc-discuss
>> But see https://datatracker.ietf.org/doc/draft-levine-herkula-oneclick/

>Is this really a good idea? Spammers will add this new header as they added
>List-Unsubscribe headers as well and you will kindly validate the spammed
>email address if a user marks it as junk.

There are much, much, easier ways to validate recipient addresses such
as web bugs, which spammers could use if they cared, which they
haven't for at least the past decade.  Or for that matter, they could
use the existing List-Unsubscribe, which has been around since 1998.

We address this and other stuff in the Security Considerations section
in the draft.

R's,
John

PS: This really has nothing to do with DMARC.  The discussions
about this draft have been on the IETF dispatch mailing list.
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Re: [dmarc-discuss] FBL via DMARC?

2016-11-30 Thread Juri Haberland via dmarc-discuss
On 29.11.2016 19:06, John Levine via dmarc-discuss wrote:

> But see https://datatracker.ietf.org/doc/draft-levine-herkula-oneclick/
> 
> This is likely to be an RFC soon, and is apparently already
> implemented at some large webmail providers.  You can put a new header
> in your message which encourages recipient systems to do a one-click
> non-interactive unsubscribe when someone reports the message as junk.

Is this really a good idea? Spammers will add this new header as they added
List-Unsubscribe headers as well and you will kindly validate the spammed
email address if a user marks it as junk.

Dunno, but sounds like bad idea...

  Juri


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Re: [dmarc-discuss] FBL via DMARC?

2016-11-30 Thread Paul Rock via dmarc-discuss
At AOL we're doing this with a confirmation popup in clients we control and
then sending a unsubscribe mail on behalf of the user when we find
unsubscribe mailto links, and I know that some 3rd party clients also have
started to implement unsubscribe logic (iOS 10 does so for example). I also
know (and I think I'm allowed to say) we've been working on code to do the
one click URL based unsubscribe as well.

On Tue, Nov 29, 2016 at 8:51 PM, John R Levine via dmarc-discuss <
dmarc-discuss@dmarc.org> wrote:

> What would be great is if this RFC could have some language discussing
>> having a confirmation dialog to prevent these accidental mistakes from
>> happening.
>>
>
> It does.  It says that the whole point of this draft is to have a
> non-interactive unsubscribe that mail systems can do in the background when
> people report mail as spam.
>
> Mailers may not like it, but it's what recipient systems want, and what
> they've told me they're going to do.
>
>
> R's,
> John
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-- 
PAUL ROCK
Principal Software Engineer | AOL Mail
P: 703-265-5734 | C: 703-980-8380
AIM: paulsrock
22070 Broderick Dr.| Dulles, VA | 20166-9305
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