Re: private relay ... could i use srs to avoid spffail?

On 12/1/06 10:08 AM, "wayne" <[email protected]> wrote:
> 
> This is actually one place that SPF can help, even if you prefer other
> systems.  By putting a "tracking exists" in an SPF record and
> monitoring your name server logs, you can often tell who is not
> relaying email through your authorized MTAs.  Just use something like:
> 
> domain.tld TXT  "v=spf1 exists:_h.%{h}._l.%{l}._o.%{o}._i.%{i}._spf.%{d} ?all"
> 

I do not follow this 'tracking exists' record...could you explain in a
little more detail please?!?

Thanks
Michael Weiner