On Mon, Oct 26, 2009 at 11:08:15AM +0100, Jose-Marcio Martins da Cruz wrote:
On the other hand, consider valid the hypothesis that spammers don't
know what kind of filter is being used (by some particular site) is also
a bad idea.
Oh, I agree. It's long been known that [some] spammers have taken pains
to track the characteristics of target sites/systems/networks/etc. And
some of those sites are (in various ways) "announcing" details of their
configuration to the outside world, which makes that task easier.
---Rsk
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