At WGIG this week, the ambassador of Syria made the observation that “There is no serious intention to stop this spam by those who are the transporters of the spam, because they benefit. The communication operators lose nothing in spreading this spam.
Developing countries, instead of benefitting from the internet, what they’re getting is spam, and has to pay for that spam.
And quite a lot of money.”
I could not agree more. My server statistics tell me that 70% of the mail we get is spam. Up to now, we have been using a combination of DNS blacklists and SpamAssassin. This works pretty well.
However, managing spam is stealing a lot of CPU resources.
So, since spammers are thiefs stealing bandwidth, CPU, memory, disk space and human time, it is more than legitimate to attack spammers the same way they attack us. This program called Spamcannibal does just that. It will query the DNS blacklists and if the remote server is a known spam operation will close TCP port 25 for that host on your firewall.
One of these days, responsible network operators will have to link their edge routers to these DNS blacklists. By dropping all packets from spammers on port 25, these pirates would have no connectivity. This would make the whole spam business useless. Well of course customers would suddenly notice that their bandwidth consumption would decrease by 20% and might be inclined to ask for a rebate from their ISP. Spammers would not be able to find a hosting company anymore. Operators would lose sales. So, the Syrian ambassador is right. Spam does benefit to network operators.
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