I support Trent’s charter and believe it is adequate for the sake of 
determining consensus. 

laura 

> On 9 Mar 2026, at 14:49, Seth Blank <[email protected]> wrote:
> 
> Let's come back to the charter, please.
> 
> To those who chimed in on this thread, it seems to me that most of you are OK 
> with the charter as Trent proposed it, due to the resistance to Ale's 
> proposed language. Can you please be explicit on if you think Trent's 
> proposed charter is adequate for the sake of determining consensus?
> 
> We can talk merits of ARC and how to conclude the experiment AFTER a charter 
> is locked in and approved by the IESG.
> 
> Seth, as Chair
> 
> On Mon, Mar 9, 2026 at 10:15 AM Alessandro Vesely <[email protected] 
> <mailto:[email protected]>> wrote:
>> Yes, ARC has been tested, but without any authorization component.  This 
>> allows 
>> us to identify the forwarder and learn its filtering approach, but without 
>> knowing whether the forwarding is authorized, this information is useless.
>> 
>> Different solutions, such as DKIM2, are supposedly better than ARC, but, 
>> again, 
>> they don't provide any authorization system.  Therefore, they probably won't 
>> solve the mailing list problem either.  And they won't be coming anytime 
>> soon.
>> 
>> I'm asking the WG to consider a simple authorization scheme which could 
>> address 
>> the forwarding issue.  This draft was not considered at the time because 
>> Phase 
>> II, "Specification of DMARC Improvements to Support Indirect Mail Flows", 
>> was 
>> considered complete with the publication of ARC.
>> 
>> In this context, once authorization is granted, ARC appears to be slightly 
>> preferable to DKIM for authentication, thanks to the addition of the AAR 
>> field. 
>>   This is not /focusing/ on ARC, but simply using it for what it's worth.
>> 
>> 
>> Best
>> Ale
>> 
>> On Mon 09/Mar/2026 12:49:58 +0100 Laura Atkins wrote:
>> > +1 to Alex’s message. There are ongoing efforts to address the damage 
>> > DMARC has done to legitimate indirect mail flows. ARC has been tested and 
>> > no one working with large mail flows seems to think that it’s a viable 
>> > solution. Focusing on ARC will prevent other solutions from being tested 
>> > and tried. It’s time to give up on ARC and look at different solutions.
>> >
>> > laura
>> >
>> >> On 9 Mar 2026, at 11:44, Brotman, Alex <[email protected] 
>> >> <mailto:[email protected]>> wrote:
>> >>
>> >> Doug,
>> >>
>> >> I’m not sure why you equate lack of support for ARC with lack of interest 
>> >> in solving the “mailing list” problem.  I think there are many parties 
>> >> interested in solving that case, and they’ve determined that ARC isn’t 
>> >> that solution.  Or perhaps, isn’t the solution they want due to other 
>> >> issues that come with implementation (which are enumerated in Trent’s 
>> >> draft).  I’d say based on the interest in DKIM2, there are parties 
>> >> interested in resolving that particular problem.
>> >>
>> >> -- 
>> >> Alex Brotman
>> >> Sr. Engineer, Anti-Abuse & Messaging Policy
>> >> Comcast
>> >>  
>> >> From: Douglas Foster <[email protected] 
>> >> <mailto:[email protected]> 
>> >> <mailto:[email protected] 
>> >> <mailto:[email protected]>>>
>> >> Sent: Monday, March 9, 2026 7:15 AM
>> >> To: Laura Atkins <[email protected] 
>> >> <mailto:[email protected]> <mailto:[email protected] 
>> >> <mailto:[email protected]>>>
>> >> Cc: IETF DMARC WG <[email protected] <mailto:[email protected]> 
>> >> <mailto:[email protected] <mailto:[email protected]>>>
>> >> Subject: [dmarc-ietf] Re: Proposed Recharter to Conclude the ARC 
>> >> Experiment
>> >>  
>> >> I would certainly like to believe that evaluators need no advice because 
>> >> they know what they are doing, but the evidence suggests otherwise.
>> >>  
>> >> The "mailbox problem" indicates that evaluators are not acting in the 
>> >> interest of their users, by blocking acceptable messages that users want. 
>> >>   It also indicates, indirectly, that evaluators are failing their users 
>> >> because they are configured to accept some malicious impersonation that 
>> >> they should be blocking.
>> >>  
>> >> Doug Foster
>> >>  
>> >>  
>> >>  
>> >>  
>> >> On Mon, Mar 9, 2026 at 6:45 AM Laura Atkins <[email protected] 
>> >> <mailto:[email protected]> <mailto:[email protected] 
>> >> <mailto:[email protected]>>> wrote:
>> >>  
>> >> On 8 Mar 2026, at 20:59, Murray S. Kucherawy <[email protected] 
>> >> <mailto:[email protected]> <mailto:[email protected] 
>> >> <mailto:[email protected]>>> wrote:
>> >>  
>> >> I think we're going in circles here.  You're saying there might be value 
>> >> in ARC worth pursuing, and we won't know unless we try.  But for "try" to 
>> >> happen, there need to be people interested in putting in the work to get 
>> >> to the answer.  I'm not the one that gets to make that call, but I think 
>> >> there's a dearth of interest in doing so.
>> >>  
>> >> Putting it in the charter doesn't guarantee people will show up to do the 
>> >> work.  In fact, part of chartering a WG is asking "Who will do this work 
>> >> if we charter it?" and, well, I personally think the answer is plain.
>> >>  
>> >> Following on to this. Big mailbox providers have done the work to 
>> >> implement ARC signing on their mail. We’ve heard from a few major mailbox 
>> >> providers they have looked at using the data on the inbound. They aren’t 
>> >> interested in working on more experiments in ARC. 
>> >>  
>> >> I don’t think there’s anything here and we should just end the ARC 
>> >> experiment. 
>> >>  
>> >> laura 
>> >>  
>> >> -- 
>> >> The Delivery Expert
>> >> 
>> >> Laura Atkins
>> >> Word to the Wise
>> >> [email protected] <mailto:[email protected]> 
>> >> <mailto:[email protected] <mailto:[email protected]>>
>> >> 
>> >> Delivery hints and commentary: http://www.wordtothewise.com/blog 
>> >> <https://urldefense.com/v3/__http:/www.wordtothewise.com/blog__;!!CQl3mcHX2A!Dln8pxYfwtpEt76WgweiNBTmH9WTb6Wv426tK9l6CB3qC-WZ6H5QG_ZYfVe5RsJ0jADdlwQmwaJ7n7p_O-7N_05kTMLoNCQ$>
>> >> 
>> >> 
>> >> 
>> >> 
>> >>  
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-- 
The Delivery Expert

Laura Atkins
Word to the Wise
[email protected]

Delivery hints and commentary: http://www.wordtothewise.com/blog        






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