[Mimedefang] sendmail spf milter plugin for sendmail 8.13.0

[Les Mikesell]

On Thu, 2004-08-19 at 14:26, Matthew.van.Eerde at hbinc.com wrote:

> > The problem is still that this
> > identification is meaningless unless there is a way to limit the
> > number of them that can be generated.
> 
> Not meaningless.  If I send an email From:
> matthew.van.eerde at example.com, and sign it with my PGP key, and publish
> my public PGP key via DNS at matthew-dot-van-dot-eerde.example.com, you
> can be darn sure that one of the following is true:

The kind of identification I want is to know that if you send
one spam with this signature that I will be able to recognize
all subsequent emails coming from you and reject them.  As long
as you can also send with a different signature that won't be the
case, and I don't think anyone is ready to accept any kind of
authority that could force you to only use a single identification
or be able to validate that. And if they could, what would happen
when your relationship with example.com changes?

---
  Les Mikesell
   les at futuresource.com