Re: [Shutup] [ietf-smtp] Proposed Charter for the "SMTP Headers Unhealthy To User Privacy" WG (fwd)
Ned Freed <ned.freed@mrochek.com> Mon, 30 November 2015 19:54 UTC
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Date: Mon, 30 Nov 2015 09:50:58 -0800
From: Ned Freed <ned.freed@mrochek.com>
In-reply-to: "Your message dated Mon, 30 Nov 2015 05:27:15 +0000" <1448861235657-433b0be9-09d1067c-704d6f94@fugue.com>
References: <20151129181346.9221.qmail@ary.lan> <1448849884345-6302c7ad-3551840c-2a0b598f@fugue.com> <01PTP8T9GMFM01729W@mauve.mrochek.com> <1448861235657-433b0be9-09d1067c-704d6f94@fugue.com>
To: Ted Lemon <mellon@fugue.com>
Archived-At: <http://mailarchive.ietf.org/arch/msg/shutup/s1ETW3PJj61EW2pfYkS072JoxuM>
Cc: shutup@ietf.org
Subject: Re: [Shutup] [ietf-smtp] Proposed Charter for the "SMTP Headers Unhealthy To User Privacy" WG (fwd)
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> Sunday, Nov 29, 2015 11:53 PM Ned Freed wrote: > > In fact this is now the most common case: Mail is submitted to a large service > > provider which if it exits the administrative domain at all goes directly to > > your administrative domain. The Received: header fields from, say, aol.com is > > entirely trustable, especially since you can check the DKIM signature. > Why would you want to check the Recieved: header fields in this case? Under > what circumstances would checking the header fields in a message known to have > been received from aol.com, with a valid DKIM signature, add value over the > validation you're already stipulating has happened? Because vast amounts of spam comes through MSPs like aol.com, all nicely DKIM signed. And of course you can't block aol.com completely - although I admit it's really tempting sometimes. > >> Anything else, you have to trace back through the logs hop by hop to actually > >> know that the mail transited those systems; otherwise, an attacker can fake up > >> whatever Received: header fields they want in order to cast blame on whomever > >> they want to harm. > > > > No, they really can't. See above. > I think we may be talking about different things. If you are trying to > identify spam, you wouldn't need to do this for mail received through aol.com. Except that sometimes you do. See above. > I'm talking about the case where someone is committing some kind of illegal > behavior that triggers search warrants or other requests for records. In this > case, lawful requests can be satisfied by searching logs, and could not be > satisfied by looking at the text of a message. The data in such a message > could not be considered trustworthy. When did the needs of law enforcement become part of this? Anyway, it is of course the case that logs are the best evidence. But logs aren't always available, and if they are available they may not be accessible, in which case you make do with what you have. > > And the "from" clause d is far from the only thing of use in a Received: field. > > In fact it's far from the only thing that has privacy implications. Just > > as one example, "with" clauses can be used to indicate whether or > > not SSL/TLS was used to secure the connection. An unbroken Received: chain > > can provide assurance (or repudiation) of end-to-end transport protection. > Why would that be useful? Oh, I don't know, perhaps to find out where gaps exists in privacy coverage and patch them up? Service providers have proven to be fairly responsive to customer requests for SSL/TLS protection. > > Unfortunately, so far the "analysis" that's been done of the privacy > > considerations of email trace information has been so shallow that stuff like > > this has been missed. > I don't think it's so much been missed as found to be of no obvious value. > > Nonsense again. In a world where almost email is spam or worse, any mechanism > > that provides benefits in the fight against spam is beneficial to end users. > Yes, let us think of the children! And with this I'm done. It is now quite apparent that not only do you have zero clue about the operational realities of modern email systems, you aren't interested in correcting your many misconceptions. Given that, there is no point in continuing this discussion. Ned
- Re: [Shutup] Proposed Charter for something Ted Lemon
- [Shutup] Proposed Charter for the "SMTP Headers U… Alexey Melnikov
- Re: [Shutup] Proposed Charter for the "SMTP Heade… John R Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Alexey Melnikov
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Stephen Farrell
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Jim Fenton
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Christian Huitema
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ned Freed
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Rolf E. Sonneveld
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Newman
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Steve Atkins
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Richard Clayton
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ned Freed
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ned Freed
- Re: [Shutup] chained authorizationm, was Proposed… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] chained authorizationm, was Proposed… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Al Iverson
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Steve Atkins
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Randall Gellens
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Martijn Grooten
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ned Freed
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Tony Finch
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Kurt Andersen (b)
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Martijn Grooten
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Christian Huitema
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Stephen Farrell
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Stephen Farrell
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Hector Santos
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Martijn Grooten
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Stephen Farrell
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] real life privacy tradeo… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] real life privacy tradeo… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] real life privacy tradeo… John Levine
- Re: [Shutup] [ietf-smtp] real life privacy tradeo… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Derek J. Balling
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Stephen Farrell
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Derek J. Balling
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Simon Josefsson
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Derek J. Balling
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Richard Clayton
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Christian Huitema
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Steve Atkins
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Al Iverson
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Kurt Andersen
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Robert A. Rosenberg
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Al Iverson
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] real life privacy tradeo… Derek J. Balling
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… MH Michael Hammer (5304)
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] real life privacy tradeo… Christian Huitema
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Robert A. Rosenberg
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Robert A. Rosenberg
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Hector Santos
- [Shutup] Proposed Charter for the "SMTP Headers U… SM
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Chris Lewis
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Chris Lewis
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Ned Freed
- Re: [Shutup] Proposed Charter for the "SMTP Heade… SM
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Chris Lewis
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Christian Huitema
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Chris Lewis
- Re: [Shutup] Proposed Charter for the "SMTP Heade… SM
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Martijn Grooten
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Chris Lewis
- Re: [Shutup] Proposed Charter for something John Levine
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Robert A. Rosenberg
- Re: [Shutup] Proposed Charter for something Dave Crocker
- Re: [Shutup] Proposed Charter for something Martijn Grooten
- Re: [Shutup] [ietf-smtp] Proposed Charter for som… John C Klensin
- Re: [Shutup] Proposed Charter for something Stephen Farrell
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Ned Freed
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Stephen Farrell
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Christian Huitema
- Re: [Shutup] [ietf-smtp] Proposed Charter for som… Chris Lewis
- Re: [Shutup] Proposed Charter for something Hector Santos