Hi all,
In the last 48 hours I've tested a blacklist that includes the following
domains:
yahoo.com
yahoo.co.uk
hotmail.com
msn.com
email.com
aol.com
mail.com
lycos.co.uk
As we know each of them is often used in spam as sender domain.
I've give them 40% of the hold-value because "real" messages from
hotmail & co users should not trigger many DNS-based tests.
I've seen that nearly all of the domains in this list triggers the
NOPOSTMASTER and NOABUSE-test. Because this two tests shouldn't have to
much weight (around 15% of the hold-value) this shouldn't be a problem.
As result I've a lot of catched spam using this popular domains, that
are (now) just over the hold-value and until now no false positives.
My questions:
1.) I'm missing something that could trigger false psoitives?
2.) Are there other popular domains that I can add to this list?
Markus
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