Spam Trap Flow Statistics
These graphs are total email flow into one of our
larger (but not nearly largest) spamtraps.
This is intended to give a reasonably
representative indication of overall spam flow.
The Y axis is emails per second.
"5.0k" means 5000 emails/second.
For each 1000 emails/second this trap averages over
a day, the total is another 86 million emails/day.
For example, a 5000 emails/second average over a day represents
432 million emails per day.
The X axis is the date/time in GMT.
No attempt is made to distinguish spam from non-spam email
hitting the trap. For example, the total flow numbers will
undoubtably include "backscatter". Backscatter is where spam
is created with a forge sender address, and is sent to a mail
server that rejects the email by a bounce - to the forged
The CBL does not list IP addresses for this reason, but other DNSBLs
Generally speaking, more than 95% of the hits represented in
this graph result in a CBL listing.
One of the more important things to take away from these graphs
is the highly cyclic volume of spam being sent.
Note also the abrupt dip at Dec/Jan of 2010/2011, and March 2011.
The first was when the Rustock bot operator seemed to go on holiday
for almost two weeks. The second was when the Rustock bot was
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