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Re: [Asrg] Spam, defined, and permissions

2004-12-30 08:00:45
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James Lick wrote:
|
| gep2(_at_)terabites(_dot_)com wrote:
|
|> If you have 50 million zombies recruited, you can send a billion spam
|> E-mails daily by sending 20 E-mails per day per zombie.
|>
|>
|>
|
| The figures I've heard are that there are somewhere around 5 million
| zombie hosts out there, and any one group has at most 500,000 hosts they
| control.  That's still a lot, but an order of magnitude or two below
| your scenario.

That estimate is way to low.  The CBL alone was listing almost four
million of them at one point - and that's with an apparently relatively
short timeout, and only detecting certain flavours hitting specific traps.

| More than 99% of consumers have absolutely no desire for that, and those
| that do have many options of how to achieve that even in the face of
| port 25 filtering by default.  Experience has shown that every time a
| consumer level ISP has implemented port 25 filtering has seen spam and
| virus propagation from their networks drop dramatically.  Experience has
| shown that mail servers employing agressive, well-updated anti-virus
| filtering see greatly reduced virus propagation in their mail clients.
| It's not perfect, but it works much better than without it.  If most
| consumer ISPs did it, the problem would be reduced even further.

Absolutely.  ISPs have reported that implementing port 25 blocking has
virtually eliminated the emission of viruses. And spam too.
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