[NBLUG/talk] Spam issues
E Frank Ball
frankb at efball.com
Wed May 19 09:48:00 PDT 2004
On Wed, May 19, 2004 at 09:23:17AM -0700, Steve Johnson wrote:
} On Wed, May 19, 2004 at 09:05:39AM -0700, Eric Eisenhart wrote:
} > http://crm114.sourceforge.net/ ?
} > http://www.nuclearelephant.com/projects/dspam/ ?
} > procmail?
}
} I'm not sure if I understand your post Eric, are you suggesting just using
} procmail?
}
} That would be fine and dandy if I wanted to spend my day writing
} rule sets, but to be honest, I don't have the drive or the time for that.
I found the best approach is it use many spam fighting tools:
1) My mailserver uses a number of blacklists:
xbl.spamhaus.org
list.dsbl.org
dnsbl.njabl.org
cn-kr.blackholes.us
brazil.blackholes.us
argentina.blackholes.us
taiwan.blackholes.us
nigeria.blackholes.us
2) My mailserver also has it's own blacklist I've built up, currently
about 500 domains/users.
3) Many spammers configure their mailserver to ID itself with either:
my IP address, my domain name, or my user name. Use either your
mailserver configuration or procmail to bounce/delete these and it will
cut spam significantly.
4) use a filter like crm114 or spamassassin (called from procmail)
5) a few custom procmail rules to get rid of foreign character sets. On
sonic's server where I don't run the mailserver I have more procmail
rules then on my own server where I do as much as possible with postfix.
--
E Frank Ball frankb at efball.com
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