Hello! I am developing a new SPF milter from scratch at https://gitlab.com/glts/spf-milter. It’s written in Rust.
This project is not yet released, a work in progress. I’m announcing it now so that hopefully, if you’re interested, you can try it out and perhaps even help shape what the final product will look like … I find it useful already and hope it can be useful to other people, too. Feedback is welcome on the issue tracker. Ciao, David