Hoping to compare the helo domain to the IP addresses listed in the
corresponding SPF record for that domain. We would provide stats like:
1) Number of times an SPF record existed
2) Number of times SPF record did not exist
3) Number of times the helo domain matched the spf record for that domain
and the IP address of the mail client
On 11/15/04 11:21 AM, "Dave Crocker" <dhc(_at_)dcrocker(_dot_)net> wrote:
On Mon, 15 Nov 2004 11:15:34 -0500, Carl Hutzler wrote:
? Only reason we are testing the SPF record against the HELO is for
? a test. We do not know one way or another if this is a good idea
? to implement on a wider scale or not. It is usually better to have
? different DNS statements/configs for different things and HELO is
? very different from an email domain in the 822 or 821 mailfrom
? headers. So my engineering background would say it is better to
? have separate ones.
? But since no one is publishing CSV records yet (including
? me....bad me), we have to start somewhere.
Thanks for the followup. Let me make the request more clear. It was not
meant as a challenge; indeed your ready willingness to try anything that folks
think might be useful -- no matter how crazy some of us might think it -- is
The request is for the technical details of what exactly you will look for and
what semantic you will apply. In other words, the request is for something
like a specification, rather than a rationale.
dcrocker ?a t ...
Director, AntiSpam Operations
America Online Mail Operations