[Spambayes] RE: Yahoo's "domain keys" and spam

[Tony Meyer]

[Tim]
> Yes, that's right for the Outlook plugin.  The underlying 
> engine has dozens of options, though, and *can* be configured 
> to do lots of other things.
[...]
> An example of another header gimmick we ignore by default is 
> Habeas headers:
> 
>    http://www.habeas.com
> The options search_for_habeas_headers and reduce_habeas_headers
> can be enabled to pick those apart.

Whoops.  Ages ago I wrote code that I use locally to utilise the Habeas
headers (they pushed some regular and semi-regular newsletters I get from
very low ham to 0.0 (rounded)); I think I even posted code at the time.
Some time later (but still some time ago ;) I (by mistake) committed the
options, but not the tokenizing code (it seemed unlikely that it would be a
significant gain, since AFAIK the Habeas headers haven't really caught on).
So right now enabling those options will actually have no effect.  (Tim's
theory is right, though <wink>).

To remedy this, I've deprecated/experimentalised the Habeas options and
checked in tokenizing code for them.  I'll leave it like this for the next
release so that anyone that has enabled them can get a deprecation warning,
and (unless results come back saying that the they see a real gain) remove
them after that.

=Tony Meyer