Re: gbWilly all your mails are spam?

[gbWilly <gbWilly@xxxxxxxxxxxxxx>]

On Friday, December 27th, 2024 at 17:56, Christof Thalhofer <chrisml@xxxxxxxxxxx> wrote:

> Am 27.12.24 um 14:41 schrieb Bruce Steers:
> 
> > gbWilly, what have you done that has every message from you going into
> > my spam folder?

I have no idea. I just have a free protonmail account that I use from a webbrowser.
No e-mail clients used here.

> It includes within others the headers
> 'List-Unsubscribe:List-Unsubscribe-Post' to create a cryptographic
> signature for that mail.
> 
> This is very unusual and counterproductive because these headers are
> usually set by a mailinglist software on another server after it
> received the original mail from a protonmail server and before it sends
> it out to the users.
> 
> In our case our software on lists.gambas-basic.org adds
> 'List-Unsubscribe' to the headers and with that the first DKIM signature
> created by protonmail is broken.
> 
> A broken DKIM signature is a proof that strings in the defined headers
> and/or the body have been altered without the permission of the original
> sender or that the mail comes from another sender and pretends to be
> from the original one.
> 
> Receiving servers can ignore it or take it as a serious sign that the
> mail is spam.

That might explain but not much I can do

> Solution: Ask protonmail to remove
> 'List-Unsubscribe:List-Unsubscribe-Post' from their DKIM signature.

Don't think they will do a lot for a free account.
But, I'll see if and how I can report this.

gbWilly