This list has gone quite small in size recently. The size changed from
above 100000 IP addresses to only 10000 now. Could it be because
University of Alberta is not being targeted so often anymore? Or is
it because they have become more selective in trapping addresses?
Thanks for any comments.
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I actually think that you are seeing a decrease in the number of
active spam senders. Other greytrappers (like my robot helpers) have
seen a decrease in trapped hosts too. This could the effect of events
like the McColo takedown last November, and possibly other less
publicized events could have helped too.
There is even a tiny possibility that some former spam senders have
come under a more sensible sysadmin regime, and we can even hope that
our greytrapping and 'name and shame' efforts are having some effect.
We can dream, can't we?
Peter N. M. Hansteen, member of the first RFC 1149 implementation team
"Remember to set the evil bit on all malicious network traffic"
delilah spamd: 188.8.131.52: disconnected after 42673 seconds.
A little of both.
In fact the list at 10K was probably an anomoly - I briefly partly "broke" it
when I was shufflign machines around so you didn't get them all :) That's
since been changed.
Having said that my trapped volume is only around 35->40K hosts recently - but
this corresponds to my total smtp connection volume has decreased abotu 50 to 60 percent
since the MrColo and other spambot holder shutdowns in november. I used to peak over
2 million total in a day, and now peak just under a million.
You can see this quite graphically here:
(ignore the black line - it suffers from anomolies when my slaves do something
> > it because they have become more selective in trapping addresses?
Oh and it's not because of this. We just managed to expire 66,000 accounts
here which will only make the trapping get better ;)