Re: New email address

On 2015-11-24 13:43, Alvaro Herrera wrote:
> Larry Rosenman wrote:
>> On 2015-11-24 13:11, Tom Lane wrote:
>> >Kevin Grittner <kgrittn@gmail.com> writes:
>> >>On Tue, Nov 24, 2015 at 11:10 AM, Tom Lane <tgl@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: ler@lerctr.org
US Mail: 7011 W Parmer Ln, Apt 1115, Austin, TX 78729-6961