Am 17.07.2017 um 09:48 schrieb Alex JOST:
> AFAIK Authenticated Received Chain (ARC) was designed for exactly this use > case. Wondering if anyone has some experience with it or knows if Gmail is > already honouring ARC-headers. yes, there are multiple ARC implementations between alpha and production state. a good entry for further information is http://arc-spec.org/ I personally work with OpenARC which is more alpha state. At IETF 99 there was a Hackathon last weekend. People also worked on ARC. (https://mailarchive.ietf.org/arch/msg/dmarc/CnIGMxYfiyuquzvr_KZ_uCvRW8I) Andreas
