Re: I-D ACTION:draft-klensin-email-envelope-00.txt

Hello Hector,

At 21:35 04/01/26 -0500, Hector Santos wrote:

>What I did not get 100% clear about SPF, is whether it works from a central
>authority (database) concept.  Its documentation seems to indicate both (a
>central and your own).  The author should clarify this more.

Please tell him directly. I don't have any direct contacts.


>In any case, in my research and testing of the various DNS lookup proposals,
>the only "current" benefit I see from all the anti-spam DNS based lookup
>proposals is checking spoofs against your own domains.

That's the initial benefit, as I mentioned.


>If you begin to
>check other domains, the DNS overhead skyrockets.   It was pointed out to me
>by the DMP author that this is a function of your DNS setup. I am not too
>sure about this. But I don't pretend to be an DNS expect.  All I know is
>that looking up an unknown domain (which is what a majority of the spammers
>are) yields a long initial lookup delay.

I'm no DNS expert either. But giving the spammers some delay may be a
nice side effect :-).


Regards,   Martin.