sendmail/spamblock

[John Seth]

using the below mentioned enhancement to sendmail is good.  However, in
my own experience, depending on the orbs' lists' you setup, you could be
checking for open relays only, and not necessarily spam.  My system got
so complex adding over 100+ orbs-type lists, that we went to
spamassassin, running as a daemon.  Other things we've done is block
some domains in sendmails access lists which become a known nuisance.
Lately, we've been hit by some system in Colorado spamming us with over
120 servers, at over 500msg's per minute, and we've ended up blocking
them from out network on the router level.  Less traffic inside our
network ;)

  - Tony

----- Original Message -----
From: "Darin Perusich" <Darin.Perusich at cognigencorp.com>
To: <nflug at nflug.org>
Sent: Thursday, March 27, 2003 12:23 PM
Subject: sendmail/spamblock


: *** taken from a earlier message **
:
: I have sendmail issues on a BSD Unix
: machine. Can't seem to keep a lid various spam issues. Can the
: sendmail/spamblock major domo in this group give me some tips and
tricks
: and/our point me to some resources?
:
: *** taken from a earlier message **
:
: have you tried enabling sendmails dns blacklist feature? after
enabling
: this the amount of spam traffic was greatly cut down. just add
: FEATURE(dnsbl,`relays.ordb.org', `Rejected - see http://ordb.org/') to
: you sendmail mc and rebuild the config. there are a number of free
: blacklist's avialable, i forget why i chose ordb over the others.
:
: before doing this make sure that your domain is NOT on that
blacklists!!
: you can do a lookup at any of these site.
:
: --
: Darin Perusich
: Unix Systems Administrator
: Cognigen Corp.
: darinper at cognigencorp.com
:
:
: