There are some practitioners who wax quite extreme on substantive
per-recipient configurability (eg: some of those on the qpsmtpd list
;-), but the reality is that the number of people who'd actually
_use_ such knobs would be extremely small, and still fewer who could
adjust it effectively.
Some years ago I was talking to abuse people at a large cable ISP.
They said their old filters didn't work very well, and their users
were constantly demanding configurable whitelists and special cases.
Then they switched to a new filter that worked a lot better, and the
requests just stopped.
It shouldn't come as a big surprise that users' mental models are not
the same as ours, and frequently don't match what's really going on.
It generally doesn't occur to them that the problem is that their
filters just don't work very well, so they assume that whatever
they've got is the state of the art, and the only way to make them
work better is to add special cases to fix the mistakes. But in fact,
a well tuned filter makes very few mistakes.
I suppose that if you are the only researcher at your institution
working on erectile dysfunction, you might need special exceptions,
but other than that, special cases tell us that the filters are
broken.
R's,
John
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