DMARC support

[Raka Gunarto]

On Thu, Jun 5, 2025 at 8:51 AM Siddh Raman Pant <sanganaka at siddh.me> wrote:
> Is there a reason why this mailing list still doesn't support DMARC?

I think the main problem is the mailing list adds a footer which
breaks DKIM signatures.

Adding the appropriate ARC headers signing the modifications should
fix this, and I can see the mailing list is using Mailman 2, but this
is only supported in Mailman 3.
(https://docs.mailman3.org/projects/mailman/en/latest/src/mailman/handlers/docs/arc_sign.html)

Might be a non-trivial fix for what a small issue? I trust the mailing
list is doing alignment checks before distributing to the list so if
SPF passes all is well imo.

Raka