Antispam help?

[Addicted]

Hello there.
I have one big problem.
By the way sorry for my bad english.

My problem is that i have reciving big flood from some dynamic hosts to my my domain.
The problem is that the letter are addrest to invalid users on my host.
And when i have big flood every time my clamd scan and my spamassasian and my f-prot scaning the letter and this is doing much CPU time and my pc is going to the dead and when finish the scanning is coming back from the dead.
how can fix this problem.
5x

I use QMR on slackware v 10.2.

[paals]

http://forum.qmailrocks.org/archive/index.php/t-313.html

I use
/usr/local/bin/rblsmtpd -B -t 300 \
-r bl.spamcop.net \
-r sbl-xbl.spamhaus.org \
-r dnsbl.njabl.org \
-r cbl.abuseat.org \
-r relays.ordb.org \
-r accredit.habeas.com \
-r plus.bondedsender.org \
-r iadb.isipp.com \
-r dnsbl.sorbs.net \

[Pebcak]

Don't use relays.ordb.org. ordb.org shut down last December.

[paals]

sorry that`s right!
(I copy from a old list)

[w0ls0n]

Hello, There is a lot more you can do to combat Spam. First you need to upgrade to John Simpsons latest patch. All the details you need to know are on one page:

http://www.goodcleanemail.com/kb.php?ToDo=view&questId=93&catId=3

Make sure you follow the validrcptto links at the bottom and enable it. That should cut a lot of Spam out of the picture.

RBLs are a good idea on thwarting spam:

http://www.spamhaus.org/sbl/howtouse.html

And then adding custom rules should help clean up the rest of the junk mail:

http://www.goodcleanemail.com/kb.php?ToDo=view&questId=10&catId=2

Bill