Re: Big problem with this mailing list and Majordomo regarding DMARC

[Scott Kitterman]

On April 20, 2019 4:23:09 AM UTC, Peter <pe...@pajamian.dhs.org> wrote:
>On 20/04/19 3:57 PM, Scott Kitterman wrote:
>> Not at all.  The unusual aspect of this case is the originator
>including Sender in the mail sent to the list.  Don't do that and it's
>all fine.
>
>So we should expect people to do what we think is best practice instead
>
>of what is recommended in the appropriate standards documents, and when
>
>they don't it's their fault for actually following the standards? 
>Ummm, ok.

Sigh.  No.  That's not what I wrote at all.

RFC 6376 suggests signing the sender field if present.  It says nothing about 
adding it.  For that you want RFC 5322, Section 3.6.2.  (Originator Fields).

Unless a third party is transmitting mails to a mailing list on your behalf, it 
shouldn't be there.

Scott K