On Wed, 2026-10-14 at 08:35 -0400, Kusoneko wrote: > > Not sure if this would be technically possible, but I think that > > appending a single line of text like "To unsubscribe send a mail > > with arbitrary subject and body > > to [email protected]" as some kind of > > signature/footer to any mail sent by [email protected] > > would solve the issue. A brief research tells that this could be > > achieved by a mailman template, but I haven't tested it. > > In general, you don't want to do this since SPF/DKIM/DMARC will break > if you do, which leads to the issue of mail being sent to the list, > being modified by the list, being sent to subscribers, being evaluated > as spam for failing SPF/DKIM/DMARC. There's a few lists that still do > modify the subject and/or body of the message to add list information, > and I personally cannot send to them because of this. E-mail literacy > is just something that ought to be taught because clearly people don't > know how to read the (additional List) headers, which includes a List- > Unsubscribe header indicating where to send leave requests.
Hi, as I understand it, though I might be misunderstanding, there are various solutions, such as the one where the list itself becomes the sender of the forwarded message, in the sense of From: Somebody via foo-users <[email protected]> But we know that even if the footer/signature is impossible to miss and unambiguous, many people still overlook it and/or misunderstand it. Regards, Ralf
