[SpamCop.net - protecting the internet through technology]

[SpamCop-List] Re: Why kornet.net isn't everytime banned?

John E. Malmberg wb8tyw at qsl.network
Fri Apr 8 01:05:21 EDT 2005


nospam wrote:
> in article d34e12$eio$1 at news.spamcop.net, Valerio at nobody at spamcop.net
> wrote on 4/8/05 2:59 AM:
> 
>>I receive about 10 spam mail a day, 6 of this come from kornet.net.
>>I dont understand why kornet.net isn't everytime banned from spamcop?
>>Vale
> 
> I'd love to know how they stay off the top 50 list, because they are MY #1
> spammer, (at least 50% of my crap) and judging from remarks here a
> significant spammer for a number of people in this NG (presumably reporters)

Spamvertised web sites do not count toward the blocking list.

Most of the spam is coming from compromised computers and the spammers 
hop from one to another to avoid DNSbsl like spamcop and cbl.abuseat.org 
and opm.blitzed.org which expire listings.

The only way to avoid this type of spam is to preemptively block the 
spam source by using either an up to date DHCP list, or to block the 
I.P. address ranges of the ISP that is allowing the spam to be sent.

Once a spam source becomes known, it becomes widely blocked in the more 
conservative lists or local blocking lists, so less spamcop.net 
reporters will be seeing spam from it to keep it on the blocking lists.

Have a talk with your postmaster, and if that is not productive, other 
users of that mail server.

I see the most complaints about lost e-mail and service outages for mail 
servers that accept spam and then try to content filter it on a per user 
basis.  I see the least complaints and the highest uptimes on the mail 
servers that refuse to accept e-mail from known spam sources.  And 
refusing e-mail from known spam sources lowers the cost of operating the 
mail server.

-John
wb8tyw at qsl.network
Personal Opinion Only


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