On 2015-11-24 13:43, Alvaro Herrera wrote:
Larry Rosenman wrote:
On 2015-11-24 13:11, Tom Lane wrote:
>Kevin Grittner <kgri...@gmail.com> writes:
>>On Tue, Nov 24, 2015 at 11:10 AM, Tom Lane <t...@sss.pgh.pa.us> wrote:
>>>>change the From header (and add a Reply-To, so replies still work).
>
>>If this were done, would the other steps (not changing the subject
>>or body of the email) be necessary?
>
>See my followup: I think it's probably true that we could skip those
>changes. But Rudy commented that there's a lot of underdocumented
>subtlety here. There might be reasons I'm missing why we'd need to
>stop doing those things. It doesn't seem like DMARC as such would
>force that, but perhaps those things trigger some popular antispam
>heuristics.
Any Header or Body changes will invalidate most, if not all, DKIM
signatures. Since DKIM is used as part
of DMARC, it's a problem.
Not sure what MajorDomo2 will allow you to do.
We can turn off header and body changes easily enough, but changing the
"From:" address requires patching the Majordomo2 source code; and, as
you may already be aware, the maintainers gave up on Mj2 a decade ago,
so we'd be on our own for that. I cannot promise any sort of timeline
for getting that done; and since that's an essential part of the
recipe,
I don't see any point in doing the other changes either for the time
being.
I think the breakage of DKIM signatures is already causing some pain
(though nowhere near the level of DMARC).
Of course, removing all the "List-" headers *and* our custom footers is
a huge step backwards in terms of mailing list functionality :-( Also,
removing the [HACKERS] etc tags will annoy some people, for sure.
You don't have to remove the List- headers. DKIM says what headers it's
using.
--
Larry Rosenman http://www.lerctr.org/~ler
Phone: +1 214-642-9640 E-Mail: l...@lerctr.org
US Mail: 7011 W Parmer Ln, Apt 1115, Austin, TX 78729-6961
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