[ietf-dkim] Authentication-Results: header users

[Frank Ellermann]

Murray S. Kucherawy wrote:

> Has anyone else implemented code that adds it or reads it,
> or both, whom I could cite in my note to the IESG that this
> spec is in use today?

Gmail adds it, I cannot say what piece of software, example:

Received: from bs.[...] (ns.[...] [...])
        by mx.google.com with ESMTP id 0si9331973wrl.11.2008.07.10.05.56.44;
        Thu, 10 Jul 2008 05:56:47 -0700 (PDT)
Received-SPF: pass (google.com: [...]) client-ip=...;
Authentication-Results: mx.google.com; spf=pass (google.com: [...]) smtp.mail=... at ...

You can also say that the SPF folks discussed and still like
the idea, as they did after MARID, almost four years ago...      
 
 Frank