Re: Good SPAM filter for Outlook for use in a small non-profite ORG

Devdas Bhagat wrote:
On 24/09/06 16:50 +0300, Mario A. Spinthiras wrote:
Is there a way to implement RBL within an email client ? If so you dont

SpamAssassin or equivalent.

need much of the super duper applications written today to stop spam. RBL usually works perfectly on mail servers. I dont see how it couldnt

DNSBLs are supposed to be used on MX hosts. anything beyond that leads
to accept, then bounce scenarios, or merely tagging as spam.

Devdas Bhagat

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Sorry about my first post with the shell script in it. This is the final version. Still a quick whip in the kitchen. Home made cooking tastes nice. Hope this is inspirational.

Regards,
Mario A. Spinthiras

#!/bin/sh
# Mario A. Spinthiras
# mario at netway dot com dot cy
RBLS="in.dnsbl.org sbl.spamhaus.org whois.rfc-ignorant.org relays.ordb.org nonconfirm.mail-abuse.org dialups.mail-abuse.org dnsbl.njabl.org dnsbl.sorbs.net list.dsbl.org multihop.dsbl.org multihop.dsbl.org"

if [ -z $1 ]; then
echo "[*] Not enough parameters. use: $0 [ip]. Exiting."
exit;
fi

echo "[*] Setting up query transaction"
ACL=$(echo $1|cut -d"." -f1)
BCL=$(echo $1|cut -d"." -f2)
CCL=$(echo $1|cut -d"." -f3)
DCL=$(echo $1|cut -d"." -f4)
RBLHOST="$DCL.$CCL.$BCL.$ACL"
if [ $ACL -gt "255" ] || [ $BCL -gt "255" ] || [ $CCL -gt "255" ] || [ $DCL -gt "255" ]; then
echo "[*] Invalid IP"
echo "[*] Exiting."
exit;
fi

echo "[*] Performing query..."
echo "[*]"


for i in $RBLS; do
echo "[*] Checking $i"
OUTPUT1=$(nslookup $RBLHOST.$i|grep -v "#"|grep Address|awk '{ print $2 }')
if [ "$OUTPUT1" ]; then
LISTED="$i $LISTED"
else
NLISTED="$i $NLISTED"
fi
done
echo "[*]"
echo "[*] Queries complete."

if [ -z "$LISTED" ]; then
echo "[*] Congratulations. You are not listed on any of the configured RBLs"
exit;

else
echo "[*]"
echo "[*] WARNING: You are listed in the following RBLs:"
echo "[*] $LISTED"
echo "[*] CONSIDER THIS A PROBLEM!"
fi

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The NSA has designated Norwich University a center of Academic Excellence in Information Security. Our program offers unparalleled Infosec management education and the case study affords you unmatched consulting experience. Using interactive e-Learning technology, you can earn this esteemed degree, without disrupting your career or home life.

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