Re: [Mailman-Developers] Author_is_list option in upcoming mailman 2.1.16

2013-09-15 Thread Franck Martin

On Sep 14, 2013, at 5:16 PM, Stephen J. Turnbull step...@xemacs.org wrote:

 Franck Martin writes:
 
 Unfortunately z= and especially l= are not used practically by
 senders because they create a risk. One could add an attachment
 containing malware to the message for instance.
 
 Indeed, we have to assume that the MUAs are broken in this respect.
 See Daniel Gillmor's posts on the problems MUAs have with indicating
 which parts of a message are signed MIME parts in the testing MUAs
 thread.
 
 The basic state of the art seems to be that MUAs can't handle anything
 safely except a signature that applies to the whole message.
 


I'm not sure if DKIM was ever meant to be exposed to the end user, but the 
current trend is to try to protect the end user as much as possible and this is 
done best by MTAs than MUAs.
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Re: [Mailman-Developers] Author_is_list option in upcoming mailman 2.1.16

2013-09-15 Thread Franck Martin
When a list goes bad, usually the members are not blamed but the list admin, 
therefore making the list the system responsible of the writing of the message.

Anyhow, it does not matter, this is a religious discussion. Please feel free to 
code and test your solution of encapsulating the message in a mime rfc822. This 
seems an interesting and good alternative. I'd like to see it in practice so we 
can compare data.

On Sep 14, 2013, at 1:27 AM, Stephen J. Turnbull step...@xemacs.org wrote:

 Franck Martin writes:
 
 One may argue that since the list is modifying the message, it is
 now the new author of it, this proposal just make it more clearly. 
 
 Nonsense.  Here's what RFC 5322 says:
 
   The From: field specifies the author(s) of the message, that is,
   the mailbox(es) of the person(s) or system(s) responsible for the
   writing of the message.
 
 The list obviously isn't responsible for the writing of the message
 body, and you could argue that in adding header/footer and munging
 attachments and Subject field it's acting as the agent of the author,
 who is therefore responsible for them too.[1]
 
 If that's not convincing, ask any of your users if they think the
 list is an author of their posts, or anybody else's.
 
 OTOH, if you want to make an authorship claim validly, there's an easy
 way to accomplish it: encapsulate the whole thing in message/rfc822.
 
 Steve
 
 
 
 Footnotes: 
 [1]  Note that RFC 5322's phrasing also clearly refutes the same
 argument when made for Reply-To.
 

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Re: [Mailman-Developers] Author_is_list option in upcoming mailman 2.1.16

2013-09-15 Thread Stephen J. Turnbull
Franck Martin writes:

  When a list goes bad, usually the members are not blamed but the
  list admin, therefore making the list the system responsible of the
  writing of the message.

Please stop being evasive.  The RFC's use of responsible is intended
to point to the person who wanted the content of the message injected
into the email system.  You know that, I know that, and you're just
looking for an excuse to let your patch escape from its responsibility
for undermining the standards on which electronic mail is founded.

  Anyhow, it does not matter, this is a religious discussion.

Religious maybe, but it does matter.  Open source lives and dies by
open standards.  Microsoft can (and does) get away with ignoring
standards if they think that will enable them to destroy the
competition by making non-Microsoft software inable to interoperate
with Microsoft's.  (Consider the number of complaints we get about
Outlook's brain-damaged handling of the Sender field.)

Let's *not* do it to ourselves *if we can avoid it*.  Maybe we can't
avoid it, but we really ought to try.

  Please feel free to code and test your solution of encapsulating
  the message in a mime rfc822. This seems an interesting and good
  alternative. I'd like to see it in practice so we can compare data.

Without funding, I probably can't do it soon.  My GSoC student
Abhilash might be willing to do it after GSoC though.

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Re: [Mailman-Developers] Author_is_list option in upcoming mailman 2.1.16

2013-09-15 Thread Stephen J. Turnbull
Franck Martin writes:

  I'm not sure if DKIM was ever meant to be exposed to the end user,
  but the current trend is to try to protect the end user as much as
  possible and this is done best by MTAs than MUAs.

I disagree fundamentally.  It's best done by *both* MTAs and MUAs.
Not all threats attack you from the outside, nor can MTAs stop
everything that comes at them without help.  That's why mail services
provide spam folders to quarantine suspect mail.

I agree that altogether too many MUA authors agree with you, so we
can't expect much good to happen if we try to do things that depend on
capable MUAs.  That doesn't mean we shouldn't lobby for better MUAs.
MUAs have the advantage of interacting with the user, and they can
take advantage of the user's knowledge and intuition.

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Re: [Mailman-Developers] Author_is_list option in upcoming mailman 2.1.16

2013-09-15 Thread Mark Sapiro
On 09/14/2013 11:18 PM, Franck Martin wrote:
 
  this is a religious discussion.


Religious or not, it is controversial, and this discussion has raised
valid points.

Because the issue remains controversial, I will soon release 2.1.16
final with the feature disabled by default, and will consider the
message encapsulation approach or other possibilities based on
experience with 2.1.16 for a 2.1.17 release perhaps early next year.

-- 
Mark Sapiro m...@msapiro.netThe highway is for gamblers,
San Francisco Bay Area, Californiabetter use your sense - B. Dylan
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