On Tue, Sep 29, 2026, at 13:19, Edmund Lodewijks wrote: > On 2026/09/29 19:08, Bron Gondwana wrote: > > If you inspect the headers on this message, you'll find that it was DKIM2 > > signed on the way out from Fastmail. > > ...> Everything is currently based on spec-06 of course. I'll update > it when changes come in. > > Wow! Is DKIM2 so stable that you're happy to run it in the wild? Do you > not expect any major changes anymore?
Meh, code can be changed. There's an "X-DKIM2-Info" header along with everything we add. Also, DKIM2 headers have value for 2 weeks max, so it's not a big deal if/when the format changes - the old messages will just have old headers. > > The core library is the Perl one from the interop repository - I just > > vendored it directly into Fastmail's codebase for now, so I'm not tracking > > the interop repo directly. > > Will any changes that you make inside Fastmail, based on what you > encounter "in the wild", make it back into the repo eventually? That > makes that repo rather attractive for keeping an eye on. Yes, I push everything to the repo first, and then re-vendor into Fastmail. At some point, I'll fork out the libraries to standalone per-language repositories, but it's a nice place to work for now and make it easy for others to contribute. Bron. -- Bron Gondwana, CEO, Fastmail Pty Ltd / Fastmail US LLC [email protected]
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