> > Question two. Can someone suggest a way that I can get qmail to do
> > tarpitting, or at least point me to a good wrapper to do tarpitting??
>
> What's tarpitting?
Tarpitting is when a spammer tries to send a bunch, say 100,000, of mail
messages through your server. When that spammer reaches N messages sent,
the MTA starts to put in X number of seconds pause before it will accept the
next one for processing. For example, a spammer hits me with 100,000 mail
messages when he reaches the 100th message I start putting in a 5 second
pause between accepting messages. This means that it would take him 5.78125
days to send all 100,000. Very effective at making him pay for sending spam
through you. This combined with pop before smtp pretty much locks out
spammers from your site while still allowing clients who are spread out
through the internet to use it.
Joe
