James H. H. Lampert wrote: > Please excuse the off-topic post, but I'm hoping this has come up with > others here: > > I've been tasked with implementing DMARC on our domain. And I'm told that > the Debian List Server doesn't rewrite "From" headers for DMARC-enabled > senders, and neither does it do anything else to handle DMARC-enabled > senders.
DMARC is one of many factors your mail servers need to consider when deciding whether to accept, bounce or silently drop a piece of mail. It is perfectly reasonable to set DMARC as a strong but not overwhelming factor, and then to write allow lists based on, for example: List-Id: <debian-user.lists.debian.org> which is a pretty good representation that this is Debian mail. So good, in fact, that RFC2919 https://tools.ietf.org/html/rfc2919 suggests it. -dsr-
