From: prj@po.cwru.edu (Paul Jarc)
Subject: Re: TMDA (was: new spam functionality added)
Date: Mon, 05 Aug 2002 14:23:22 -0400 [thread overview]
Message-ID: <m3bs8hp3kf.fsf_-_@multivac.cwru.edu> (raw)
In-Reply-To: <ilur8hdmb77.fsf@latte.josefsson.org> (Simon Josefsson's message of "Mon, 05 Aug 2002 20:07:08 +0200")
Simon Josefsson <jas@extundo.com> wrote:
> David Masterson <dmaster@synopsys.com> writes:
>> 1. The first person sends the second person a "dated" email address
>> which allows the second person to respond within (say) 5 days
>> without a cookie request.
...
> And if the message ends up in public before this time, you will get
> spam to it and the system fails.
For some values of "fails"; stopping some spam is better than stopping
none.
>> 2. The first person can generate a special email address for the
>> second person that will never ask for a cookie (if it's abused, the
>> address can be dropped).
>
> This doesn't work if you don't know the second person. E.g., on
> mailing lists and UseNet.
The problem (posed by yourself) was how two *people* can communicate
if they both use TMDA and are not on each others' whitelists. Usenet
can't use TMDA. Mailing lists can, but in that case, you'd use a
wide-open envelope sender address, for the mailing list to sends its
confirmation request to, and your normal, TMDA-protected From address.
You'll get the MLM's confirmation request through your wide-open
address; you'll confirm your message; the MLM will rewrite the
envelope sender before distributing your message; other subscribers
won't see it.
>> 3. The first person adds the second person to his whitelist before
>> sending the original message.
>
> Again doesn't work on mailing lists.
What specific failure do you have in mind?
paul
next prev parent reply other threads:[~2002-08-05 18:23 UTC|newest]
Thread overview: 144+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-31 19:24 new spam functionality added Ted Zlatanov
2002-07-31 19:54 ` Scott A Crosby
2002-07-31 20:07 ` Ted Zlatanov
2002-07-31 20:14 ` Simon Josefsson
2002-07-31 20:25 ` Josh Huber
2002-07-31 20:34 ` Scott A Crosby
2002-07-31 20:41 ` Josh Huber
2002-07-31 21:03 ` Stainless Steel Rat
2002-07-31 21:08 ` Stainless Steel Rat
2002-07-31 21:12 ` Josh Huber
2002-07-31 21:38 ` Paul Jarc
2002-07-31 23:19 ` David Masterson
2002-07-31 23:08 ` Frank Schmitt
2002-08-01 17:03 ` Josh Huber
2002-08-01 17:38 ` Harry Putnam
2002-08-01 19:16 ` Scott A Crosby
2002-08-01 22:43 ` Harry Putnam
2002-08-05 17:16 ` Per Abrahamsen
2002-08-01 1:25 ` Stainless Steel Rat
2002-08-01 1:33 ` Scott A Crosby
2002-08-01 2:17 ` Stainless Steel Rat
2002-08-01 19:20 ` David Masterson
2002-08-01 20:00 ` Stainless Steel Rat
2002-08-02 23:37 ` Florian Weimer
2002-08-02 23:45 ` Russ Allbery
2002-08-03 10:23 ` Simon Josefsson
2002-08-03 13:47 ` Stainless Steel Rat
2002-08-03 16:01 ` hashcash (was Re: new spam functionality added) Simon Josefsson
2002-08-04 6:55 ` Stainless Steel Rat
2002-08-01 19:17 ` new spam functionality added David Masterson
2002-08-01 19:59 ` Stainless Steel Rat
2002-07-31 21:07 ` Scott A Crosby
2002-07-31 21:35 ` Paul Jarc
2002-07-31 21:58 ` Josh Huber
2002-07-31 21:47 ` Josh Huber
2002-07-31 21:54 ` Paul Jarc
2002-07-31 22:05 ` Josh Huber
2002-07-31 22:10 ` Paul Jarc
2002-07-31 22:35 ` Scott A Crosby
2002-07-31 23:10 ` Josh Huber
2002-08-01 16:56 ` Paul Jarc
2002-07-31 23:30 ` Alan Shutko
2002-08-01 19:25 ` David Masterson
2002-08-01 19:33 ` Josh Huber
2002-08-01 22:06 ` Scott A Crosby
2002-08-01 22:13 ` Paul Jarc
2002-08-01 22:18 ` Jack Twilley
2002-08-01 22:23 ` TMDA (was: new spam functionality added) Paul Jarc
2002-08-01 22:40 ` Scott A Crosby
2002-08-01 23:29 ` Josh Huber
2002-08-02 2:11 ` Scott A Crosby
2002-08-01 19:34 ` new spam functionality added Ted Zlatanov
2002-08-01 19:39 ` Paul Jarc
2002-08-01 21:38 ` Simon Josefsson
2002-08-23 1:50 ` Ted Zlatanov
2002-08-23 2:42 ` Katsumi Yamaoka
2002-08-23 3:10 ` Ted Zlatanov
2002-12-30 0:10 ` Lars Magne Ingebrigtsen
2002-12-30 2:31 ` Ted Zlatanov
2002-12-30 2:52 ` Lars Magne Ingebrigtsen
2002-12-30 3:13 ` Ted Zlatanov
2002-12-30 3:27 ` Lars Magne Ingebrigtsen
2002-12-30 3:44 ` Ted Zlatanov
2002-12-30 4:12 ` Lars Magne Ingebrigtsen
2002-12-30 4:48 ` Ted Zlatanov
2002-12-30 5:08 ` Lars Magne Ingebrigtsen
2002-12-30 19:03 ` spam.el now supports blackholes by default Ted Zlatanov
2002-12-30 21:41 ` Matt Armstrong
2002-12-30 22:42 ` Ted Zlatanov
2002-12-30 23:38 ` spam.el proposed group parameters Ted Zlatanov
2002-12-31 0:02 ` Lars Magne Ingebrigtsen
2003-01-05 16:58 ` spam.el now supports blackholes by default luis fernandes
2003-01-05 22:07 ` Ted Zlatanov
2003-01-06 2:15 ` Lars Magne Ingebrigtsen
2002-08-02 2:05 ` new spam functionality added Jason R. Mastaler
2002-08-02 3:43 ` Russ Allbery
2002-08-02 4:29 ` Jason R. Mastaler
2002-08-02 4:34 ` Russ Allbery
2002-08-02 16:17 ` TMDA (was: new spam functionality added) Paul Jarc
2002-08-02 21:46 ` Russ Allbery
2002-08-02 21:53 ` Paul Jarc
2002-08-05 17:38 ` Per Abrahamsen
2002-08-05 17:49 ` Paul Jarc
2002-08-05 17:57 ` Simon Josefsson
2002-08-05 20:18 ` David Masterson
2002-08-05 20:46 ` Stainless Steel Rat
2002-08-05 21:50 ` Russ Allbery
2002-08-06 0:43 ` Stainless Steel Rat
2002-08-06 3:04 ` David Masterson
2002-08-06 14:27 ` Stainless Steel Rat
2002-08-06 17:13 ` David Masterson
2002-08-06 17:26 ` David Masterson
2002-08-06 18:08 ` Stainless Steel Rat
2002-08-07 12:02 ` Lloyd Zusman
2002-12-30 0:22 ` Hashcash (was: TMDA) Lars Magne Ingebrigtsen
2003-01-02 18:33 ` Hashcash Simon Josefsson
2003-01-02 19:25 ` Hashcash Lars Magne Ingebrigtsen
2003-01-02 21:01 ` Hashcash Simon Josefsson
2003-01-02 21:05 ` Hashcash Lars Magne Ingebrigtsen
2002-08-05 18:30 ` TMDA (was: new spam functionality added) Stainless Steel Rat
2002-08-05 20:46 ` David Masterson
2002-08-05 21:33 ` Stainless Steel Rat
2002-08-06 3:28 ` David Masterson
2002-08-06 16:02 ` Paul Jarc
2002-08-08 9:21 ` Steinar Bang
2002-08-08 15:34 ` Paul Jarc
2002-08-08 19:57 ` Steinar Bang
2002-08-08 20:17 ` Paul Jarc
2002-08-08 21:30 ` Steinar Bang
2002-08-08 21:35 ` Paul Jarc
2002-08-08 22:27 ` Steinar Bang
2002-08-08 17:26 ` Matt Armstrong
2002-08-08 20:23 ` Steinar Bang
2002-08-09 19:32 ` Matt Armstrong
2002-08-10 9:23 ` Steinar Bang
2002-08-10 17:21 ` Paul Jarc
2002-08-11 8:41 ` Steinar Bang
2002-08-11 14:58 ` Steinar Bang
2002-08-11 8:47 ` Steinar Bang
2002-08-12 16:04 ` Paul Jarc
2002-08-12 21:38 ` Steinar Bang
2002-08-12 22:40 ` Paul Jarc
2002-08-13 9:21 ` Steinar Bang
2002-08-05 20:11 ` David Masterson
2002-08-06 2:15 ` Scott A Crosby
2002-08-06 10:10 ` Per Abrahamsen
2002-08-06 13:20 ` Scott A Crosby
2002-08-06 16:13 ` Per Abrahamsen
2002-08-16 14:23 ` new spam functionality added clemens fischer
2002-08-05 17:07 ` Per Abrahamsen
2002-07-31 20:46 ` Jack Twilley
2002-07-31 21:01 ` Josh Huber
2002-07-31 21:03 ` Simon Josefsson
2002-07-31 21:51 ` David Masterson
2002-07-31 21:08 ` Simon Josefsson
2002-07-31 22:05 ` David Masterson
2002-07-31 23:32 ` Alan Shutko
2002-08-01 17:00 ` Paul Jarc
2002-08-05 18:07 ` Simon Josefsson
2002-08-05 18:23 ` Paul Jarc [this message]
2002-08-05 23:41 ` TMDA (was: new spam functionality added) Simon Josefsson
2002-08-06 10:27 ` Per Abrahamsen
2002-08-06 15:57 ` Paul Jarc
2002-07-31 20:35 ` new spam functionality added Ted Zlatanov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=m3bs8hp3kf.fsf_-_@multivac.cwru.edu \
--to=prj@po.cwru.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).