Re: Sender ID and Return Path

Scott Kitterman wrote:
> > -----Original Message-----
> > From: owner-spf-discuss(_at_)v2(_dot_)listbox(_dot_)com
> > [mailto:owner-spf-discuss(_at_)v2(_dot_)listbox(_dot_)com]On Behalf Of Jeremy 
> > Harris
> > Sent: Tuesday, August 31, 2004 2:49 PM
> > To: spf-discuss(_at_)v2(_dot_)listbox(_dot_)com
> > Subject: Re: [spf-discuss] Sender ID and Return Path
>
> > Third possibility:
> >
> > * Permit the spf2/pra record to reference the spf1 record.
> See this thread on the MXCOMP list for a discussion of that idea:
>
> http://www.imc.org/ietf-mxcomp/mail-archive/msg03409.html
Thanks for the ref.   However, that discussion seems to assume
that the MTA doing the DNS lookup infers a reference to the spf1
record.  I'm suggesting that the published TXT record may
include both spf1 and spf2 records, but that the latter may
include (in simple cases, consist wholly of) an explicit reference
to the spf1 record.
  The reference is thus under the control of the domain owner so
no automatic opt-in to Sender-ID need or should be inferred by
the MTA.

Cheers,
   Jeremy