I hate spam

I know that there are spam filters out there like Spam fighter and spam
killer but those are passive ways to fight spam. It doesnt stop the spam
its just stops you from seeing them in your inbox. Could there be a way to
shutdown the spam relays? I'm learning C+ now and was learning about how
email works to see if I could write such a program. RadarG

> I know that there are spam filters out there like Spam fighter and
> spam killer but those are passive ways to fight spam. It doesnt stop
> the spam its just stops you from seeing them in your inbox. Could
> there be a way to shutdown the spam relays? I'm learning C+ now and
> was learning about how email works to see if I could write such a
> program. RadarG

Do you run your own mail server? If you have your own domain and are
accepting mail from the world then there is an excellent option: real-time
blocklists, also called RBLs. There are several organizations around the
world that maintain lists of IP netblock that are spamming; many of these
lists are made public and can be queries using DNS.

The beauty is that mail servers like sendmail and postfix already support
using these DNSBLs directly. For instance, in postfix I use the following
configuration option to block lots of junk mail. And my server never even
accepts the mail, so I save tons of bandwidth.

smtpd_client_restrictions =
reject_rbl_client sbl.spamhaus.org
reject_rbl_client blackholes.easynet.nl
reject_rbl_client relays.ordb.org
reject_rbl_client list.dsbl.org
reject_rbl_client ipwhois.rfc-ignorant.org

The way this works is: when a mail relay connects to your host on port 25
and starts issuing commands to begin the SMTP mail transfer, your mail
server does a parallel check to these services. If it finds that the host
is listed in any of them, it returns an error to the connecting host. If a
legitimate user sent that email, s/he will see an error message indicating
which list blocked their email and how they can resolve the issue.

--
Jem Berkes
http://www.sysdesign.ca/

RadarG wrote:
>
> I know that there are spam filters out there like Spam fighter and spam
> killer but those are passive ways to fight spam. It doesnt stop the spam
> its just stops you from seeing them in your inbox. Could there be a way to
> shutdown the spam relays? I'm learning C+ now and was learning about how
> email works to see if I could write such a program. RadarG

In comp.os.linux.networking, the only ON-TOPIC NON-SPAM answer to your
OFF-TOPIC posting is... if you unplug your network connection, you'll
receive no SPAM, unlike the rest of us who would have to unsubscribe
from this newsgroup to avoid YOUR SPAM!

--
Copyright 2003 Angela Kahealani. All rights reserved without prejudice;
UCC1-207. All information and transactions are non negotiable and are
private between the parties. http://www.kahealani.com/

On Thu, 02 Oct 2003 09:12:04 -0400, RadarG <(E-Mail Removed)> wrote:
>
>
> I know that there are spam filters out there like Spam fighter and spam
> killer but those are passive ways to fight spam. It doesnt stop the spam
> its just stops you from seeing them in your inbox. Could there be a way to
> shutdown the spam relays? I'm learning C+ now and was learning about how
> email works to see if I could write such a program. RadarG

I delete 99% of the spam on the server at present. Never gets to my box.

As for shutting down the spam relays, well, that would be a good way to
shut down the Internet and spend some time in Federal Prison.

Spam only happens because the ISPs make it easy.

And they only make it easy because the majority of people WANT to get
spam, regardless of what they may SAY.

--
Later, Alan C
You can find my email address at the website: contact.html
take control of your mailbox ----- elrav1 ----- http://tinyurl.com/l55a

Angela Kahealani wrote:

> RadarG wrote:
>>
>> I know that there are spam filters out there like Spam fighter and spam
>> killer but those are passive ways to fight spam. It doesnt stop the spam
>> its just stops you from seeing them in your inbox. Could there be a way
>> to shutdown the spam relays? I'm learning C+ now and was learning about
>> how email works to see if I could write such a program. RadarG
>
> In comp.os.linux.networking, the only ON-TOPIC NON-SPAM answer to your
> OFF-TOPIC posting is... if you unplug your network connection, you'll
> receive no SPAM, unlike the rest of us who would have to unsubscribe
> from this newsgroup to avoid YOUR SPAM!
>
Maybe if you got laid more often maybe you wouldnt be so grumpy.

RadarG <(E-Mail Removed)> wrote in
news:mEyfb.13266$k74.12221@lakeread05:


> Maybe if you got laid more often maybe you wouldnt be so grumpy.

Whoa! I get laid pretty regular, and it doesn't help the grumpiness...
believe me! I just want *more* and that makes me even grumpier! :-)

And I still get spam too.