I think that the DKIM mailing list story is a viable one.

What mailing lists and forwarders are asked to do is no different from
any other user. That is the key. 

> -----Original Message-----
> From: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] On Behalf Of Hector Santos
> Sent: Tuesday, October 18, 2005 8:43 PM
> To: [email protected]
> Subject: Re: [ietf-dkim] Re: Admilistrivia question
> 
> 
> ----- Original Message -----
> From: "Frank Ellermann" <[EMAIL PROTECTED]>
> To: <[email protected]>
> 
> 
> > Hector Santos wrote:
> >
> > > Some list servers will force a Reply-To: header in the 
> distribution 
> > > to point to the mailing list address.
> >
> > Horrible.  Hopefully DKIM will put an end to all these unnecessary 
> > manipulations of 3rd parties, it's bad enough when one user 
> (not here) 
> > inserts a Reply-To list manually.
> 
> Frank, I can almost assure you, DKIM will not stop any LIST 
> SERVERS, or more importantly their operators, from doing what 
> they have been doing for decades.
> 
> This is this same unrealistic wish item the SPF-right <g> 
> have about decades old existing behavior of relays and/or 
> forwarders.  In their eyes, SPF is not broken - Forwarders 
> are!  Maybe so, maybe not, but you can't have it both ways.  
> It is what it is.  The better technology works around ALL the
> issues.   The one attractive aspect of DKIM is that it 
> attempts removes the
> forwarding issue.  But it assumes non-altering middle ware.  
> A good assumption but it runs into a trouble when trying to 
> accomodate a groupware system.
> 
> > > This is done for MUA ergonomic reasons
> >
> > Mail software trying to be smart is always a PITA.  And 
> what you claim 
> > to be "human nature" is your personal POV with your software, it's 
> > completely different from my POV.
> 
> It has nothing to do with our "smart" software, but we do 
> accomolate a wide range of options and behaviors.
> 
> The natural MUA action is to click the REPLY "button" if you 
> want to reply to a direct 1-1 email mail system for which the 
> RFC-based MUA is designed for.  Most public RFC-based MUA 
> have 2 (excluding IMAP) mail concepts:
> 
>     SMTP/POP3 - Email 1 to 1
>     NEWS - Groupware-like, conference-like, 1 to many.
> 
> The problem with mailing list today, is that they are trying 
> to emulate groupware designs for which the MUA has no options 
> for. You don't have a 3rd reply option:
> 
>     "Reply to Mailing List Address"
> 
> It isn't like advance MUA systems with IMAP or include an 
> "exchange" concept with backend hosting systems where you do 
> have an natural reply back to the group.
> 
> A case a point:  Look at your favorite system - gmane. It 
> uses groupware
> ideas to present a mailing list.    The Nature Reply is not 
> back to the
> AUTHOR, but back to the "system" or "conference" or "group"
> 
> So it is my POV for MY software, sure, but its based on 
> customer demands and the realities of the market place.
> 
> >> To resolve this, the list server may  add/change the
> >> Reply-To: to the mailing list address.
> >
> > Maybe for those who explicitly want this (opt-in), with a 
> warning that 
> > this means trouble for a real Reply-To sent by the author.
> 
> And the author should be WARNED when he first joins a list, 
> that he will be communicating in a "groupware" system and I 
> will venture, using pareto's principle, most users will 
> naturally expect this because that is what he or she joining 
> into.  Right?  However, at the other end (MUA), for newbies 
> (and even vets), they might find it unnatural with the reply concept.
> 
> > Same issue as Sender-ID, touch one of the
> > 2822 header fields in transit and what you get is havoc.
> 
> True, true. Headers and Body should not be altered, 
> especially in direct 1
> to 1 email and passthru systems.   But many will argue that 
> it is acceptable
> to take responsibility for the email sent into a groupware 
> system where a new form distribution and ever increasing 
> altered presentable takes place.
> If you join one of these systems, you can not expect it to be 
> a clean, unaltered EMAIL 1 to 1 transaction because it wasn't 
> a 1 to 1 email transaction.
> 
> In my view, the DKIM-right will be beating a dead horse 
> trying to use DKIM as the "stick" to change decades old list 
> server behaviors. This is like trying to hike across the 
> Florida Everglades thinking you might not get bit by 
> mosquitoes, snapped at by gators or wrapped up by a python. :-)
> 
> But as a vendor, I will look into it. I have to if I want to 
> support DKIM.
> You can't ignore the conflicts it presents.   So either it 
> will work or not
> and even up being another bastard concept like SPF forwarding issues.
> 
> Personally, I think it will work better (for a mailing list) 
> as a STRIP/RESIGN signature  BUT ONLY if the original system 
> allows it.
> 
> And by "working better" I am looking at it as a designer, 
> what will it take to make this DKIM system, as is, WORK 
> within a mailing list?
> 
> I brought up the issue that if this becomes a problem, you 
> might find domains being excluded from being used in a mailing list.
> 
> For example, it has crossed our minds that we might need an 
> List Server Subscription logic that double checks the email 
> domain of a new signup for SSP 3rd party signing allowance.  
> If the SSP indicates a EXCLUSIVE policy, the list server 
> might have to send a negative signup response:
> 
>     Sorry, you can use this email domain for this mailing list
>     due to DKIM SSP Exclusive Policy. Use another email address
>     and domain.
> 
> So Frank, it isn't all cut and dry. We actually put some 
> thought into this.
> :-)
> 
> --
> Hector Santos, Santronics Software, Inc.
> http://www.santronics.com
> 
> 
> 
> 
> 
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> http://dkim.org
> 
> 

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