On 2021-10-21, J. K. <openbsd.l...@krottmayer.com> wrote: > A request from me (for this list): > I'm still having troubles with the OpenBSD mailing list. My DKIM key > will always be removed. Don't know why. My DMARC setting is restrict. > No issues with Google as example. > > Don't want to break or spam the list. > > Can somebody tell me how to fix this, please? > I'm really desperate. :(
DKIM signatures are stripped because they'll very often fail for emails sent via the list (e.g. in many cases the list modifies mails by converting to text/plain which breaks the set of headers that many people are signing). Except in the case of restrictive DMARC signatures, this is a slight improvement. I think the only ways around this from your side would be to either remove p=quarantine/sp=reject or use a different sender domain that doesn't have restrictive settings. The other way would be if the list config was changed to rewrite >From headers. Some other mailing lists resorted to doing this, but it's not very convenient for the normal list user.
