Re: DNS Query Format

> > >Which IP address?  IP Address in the DNS Query - did you mean
> > >response?  The IP address of the requesting party is already known.  Sorry
> > >to be obtuse, but I really don't understand what you mean.
> >
> > As I understand it, an SPF query generated by a receiver does not include
> > the sender's IP address in that query. That IP address is passed as one of
> > the arguments to the check_host() function, but it is not used when
> > check_host() constructs the SPF query.  The DNS server which receives the
> > query, therefore has no ability to run the SPF check itself, or to log the
> > IP for later forensics, etc.
>
> The IP address can be made available to the DNS server, by using the 'i' macro
> letter to insert the IP address into some extended form of the domain to be
> queried, thus making it available to the domain owner for validation, 
> analysis,
> etc..
I don't see how this works.  The 'i' macro, to the DNS server, is nothing 
but a pattern ( like %{i} ) to be sent as part of a string in response to a 
query from the DNS client.  As I understand it, that 'i' macro is expanded 
on the client side, so the server never sees the actual IP address.  What I 
am proposing is that the actual IP address be sent in the original query.
-- Dave

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