Reply-To mailing list?

[Dejan Strbac]

On 04.12.20 11:30, Petite Abeille wrote:
> 
> 
>> On Dec 4, 2020, at 11:03, Petite Abeille <petite.abeille at gmail.com> wrote:
>>
>> P.S. Has something changed in the Reply-To behavior of the mailing list? It seems to be missing the Reply-To: Gemini application layer protocol <gemini at lists.orbitalfox.eu> header now, which it used to sport. Accidental? On purpose? What gives?
> 
> The change seems to have occurred silently around November 22nd, end-of-day... thoughts?
>   
> ( And please, let's not drag Mr Rosenthal into this :)
> 

We've suggested that change to the postmaster (as migadu.com).

Reply-To header gets DKIM signed. Modifying or appending the Reply-To 
header breaks DKIM signature which along with failing SPF will make for 
certain DMARC failure and possibly rejection. That has lead to forced 
unsubscribing.

The mailing list (mailman) does not know the reason for message 
rejection (DMARC policy) and threats that as if the subscriber is 
unreachable.


--
Дејан Штрбац