Use of the option seems like a reasonable idea. However I am not sure
how it gets used at the validating end.
That is, I do not see what the expected scenario is, once the
difference between original Subject and current Subject is detected.
It's all rather simple: if the change is "acceptable", for some value
of "acceptable", you use the z= header instead of the actual header.
Pretty much what Barry outlined.
So, you wish to specify that a security validation step rely on a heuristic?
Further, the definition of "acceptable" is pending. For example, what are the
variations between the original header and the new header that are acceptable?
d/
--
Dave Crocker
Brandenburg InternetWorking
<http://bbiw.net>
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