> And there-in lies dragons methinks. Do you physically replace the
> Subject: so that the final recipient gets the pre-list content or do
> you logically replace it for the purposes of verifying?
>
> If the former, you'll likely irritate exactly 50% of the planet that
> wants that extra goop, and, you've precluded the possibility of a
> smart UA doing that selectively on a per-user basis.
>
> If the latter, then the vector is open for abuse and you'll have to
> hope for wide deployment of smart UAs to protect users from this risk.
Yeah, you're right. It's a difficult problem.
--
Arvel
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