Re: Spamming list members

At 19:57 2002-09-13 +0100, Alan Clifford did say:
> On Fri, 13 Sep 2002, Chris Green wrote:
> CG> How is it that I don't get spam on my usenet addres but others do?  Is
> CG> it just the types of groups one posts to that make the difference?
It is possible that usenet isn't being harvested to the same extent that it 
was a couple of years ago.  I'd be really surprised, since there are 
spammers out there trying to sell 6+ billion email addresses for US$299, 
and every address - even if it's spamguarded in some fashion - is another 
address for their list.
In the wee hours of this morning, I was reviewing my server logs and noted 
that some spamming twit had attempted delivery to addresses which were in 
fact extracted from messageids!  Some braindead address harvester was a bit 
too lax in how it parsed addresses from some resource.  Fortunatley, 
besides not being valid addresses on the server (they're messageids after 
all), every one of the connections from this putz were declined because his 
mailhost was already listed in a DNSBL...
> Maybe it is being spam filtered by someone else.  Or do you receive email
> to your own server?  If so, I am amazed you don't get the statutary 10
> Korean spams everyday.
I don't (well, I do receive email on my own server, but I don't get spam 
originating from Korea).  Of course, that is probably because I maintain a 
DNSBL zone which contains the complete netblocks of China, Korea, Taiwan, 
India, Indonesia, and a few other pacific countries (compliments of a few 
minutes churning out a perl script to interpret the IP database available 
from APNIC and generate a DNS zone file with CIDR block notation).  It 
works AMAZINGLY well, and since I don't deal with anyone in these 
countries, I'm not too concerned about turning away valid email (though the 
SMTP rejection includes a clickable URL to a page explaining thinga, so if 
I had valid communications, they could manage to get in touch with me some 
other way, and I could expressly unblock their mailhost(s) in my sendmail 
access db).
---
 Sean B. Straw / Professional Software Engineering

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