Invalid DKIM signatures in this list

[Trond Endrestøl]

On Mon, 26 Nov 2018 16:59-0000, RW via freebsd-questions wrote:

> On Mon, 26 Nov 2018 17:10:27 +0100 (CET)
> Trond Endrestøl wrote:
> 
> > On Mon, 26 Nov 2018 19:52+0700, Victor Sudakov wrote:
> > 
> > > Dear Colleagues,
> > > 
> > > I have noticed that the Mailman which manages this list keeps the
> > > sender's "DKIM-Signature:" header intact but modifies the body of
> > > the message by adding a footer.  
> > 
> > Are you sure?
> > 
> > When I received your message, the hash was made up using Message-ID, 
> > Subject, To, From, Date, and In-Reply-To. I failed to find the latter 
> > field.
> 
> That's legitimate, it signs the absence of that header if it's not
> present at the time of signing. 

OpenDKIM on my own server, not this one, doesn't take In-Reply-To into 
account unless that header is present in the envelope.

Also, I was unaware of a body hash. My bad.

-- 
Trond.