>I sure agree with you about keeping stuff in a SPAM folder making it 
>easier to review later but I'm wondering how did you do this blacklisting 
>on the Server end?

I run my own mail server. The software I use (SIMS) supports blacklisting 
of IPs, so I can put known offender IP addresses into the blacklist. 
Mostly I use that for blocking worm infected computers that are flooding 
my accounts.

SIMS also supports the use of RBLs (Realtime Blackhole Lists). These are 
basically DNS servers setup by anti-spam people, and they list known 
spammers. When an email comes into my server, the connection address is 
compared to the RBL servers, and if it is a known spammer, my server 
rejects the connection.

And finally, I have "spam trap" addresses. I took some old unused 
addresses that get a ton of spam, and routed them as a "spam trap" 
(another feature my server software supports). Any email that comes in 
addressed to one of the spam trap addresses, the connection gets 
rejected, and the connecting IP is automatically black listed for a 
period of time so the person can't send other emails to my server.

Between those 3 things, I've been able to reduce my spam levels to 
acceptable numbers.

-chris
<http://www.mythtech.net>

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