From what I can tell, anything that falls short of perfection then gets summarily executed.
The majority of the "anti-spam" proposals being actively discussed are variants on the "prove the sender is who he says he is". None of these are perfect, yet:
- they are being actively discussed in the ASRG
- they are being actively discussed on the ietf-mxcomp@xxxxxxx mailing list
- there was a BOF about them last week in Seoul
- some people are creating experimental implementations and looking at the results
This seems different than "summarily executed".
--Paul Hoffman, Director --Internet Mail Consortium