On Mon, 2 Oct 2006, Alan Cox wrote:
Ar Llu, 2006-10-02 am 09:40 -0700, ysgrifennodd Linus Torvalds:
If you want a yes/no kind of thing, do it on real hard issues, like not
accepting email from machines that aren't registered MX gateways. Sure,
that will mean that people who just set up their local sendmail thing and
connect directly to port 25 will just not be able to email, but let's face
it, that's why we have ISP's and DNS in the first place.
Except most of the ISPs are incompetent and many people have to run
their own mail system in order to get mail that actually *works*. I've
had that experience several times, although thankfully I now have a sane
ISP.
MX checking is as broken or more broken than bayes.
There is another reason bayes is not very good too - every good spammer
reruns their message through spamassassin adding random text till they
get a good score *then* they spew it out.
that's why you don't use a fixed table like that. if the table is customized for
your mail then it's unlikly to agree with anyone else's, so mail that will get
through their filter wont' get through yours (and vice versa)
David Lang
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