Daryl C. W. O'Shea wrote:
Marc Perkel wrote:

I appreciate you effort in this but lets come up with something useful. If you give up SPF I will give you and PoBox some anti-spam technology that will revolutionize your spam filtering. I'm just tired of having to deal with the bad side effects of SPF and expainging to people that the can't use my spam filtering unless they turn SPF off.

Marc, dude, for a guy that's proposing a reputation service (as if that was some sort of new revolutionary idea) I'm bedazzled (well not so much, I'm getting used to this) that you can not connect the benefit off being able to link an (controlling) identity to a previously unknown host.

Forget any forwarding issues, if the mail doesn't pass SPF you simply won't be able to link the identity to the reputation database. This is no different than your idea where mail from a domain on your whitelist gets forwarded; you lose the ability to link that identity to your whitelist/reputation database.


The identity link is at the registrar barrier. I even have a DNS lookup for that.

example.com.rb.junkemailfilter.com

It returns 127.0.0.1 for single TLDs, 127.0.0.2 for 2 level TLDs etc.

So - you do a lookup and then you count dots back from the end and that becomes your key.

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