funsec mailing list archives

Re: 'Bad Guys are Winning' Despite Fight Against Spam


From: Nick FitzGerald <nick () virus-l demon co uk>
Date: Mon, 11 Dec 2006 15:17:56 +1300

Dude VanWinkle wrote:

Spammers shouldn't be killed, we should just get rid of botnets, or

Like that's going to happen any time this decade...

block port 25 outbound from the consumer ISP's unless the user
requests it.

You don't understand spam at all, do you?

Think about it -- if botnets are a problem then lack of outgoing port 
25 in large ISP's is not a problem for a spammer (you can't possibly 
think that in general spam _must_ come from outside your network, can 
you?), and if botnets are a problem then more stringent port 25/SMTP 
checks in many large ISP's will not make much difference with webmail 
or other submission methods, and if botnets are a problem then moving 
to parasitic spam will not be a problem in the unlikely event that all 
the other real spam-causing problems get fixed...


Regards,

Nick FitzGerald

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