RBL

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• http://openrbl.org/client/

2. Perform some check at the connexion of the client
4. Reject client 11.22.33.44 if host 44.33.22.11.relays.ordb.org as the value 127.0.0.2
6. should use, in order :
7. relays.ordb.org
8. sbl.spamhaus.org
9. bl.spamcop.net
10. dnsbl.sorbs.net
11. list.dsbl.org

smtpd_client_restrictions =

       reject_rbl_client relays.ordb.org
       reject_rbl_client sbl.spamhaus.org

1. !/bin/bash

2. The prupose of this script is to check if some ip address are listed into some relay blocking database
4. It returns 0 if no ip is listed, 1 otherwhise
5. Usage : $0 [ip1 [ip2 [...]]]

2. A file containing a rbl server per line

RBLSFILE="rbl-list.txt2"

if [ -f $RBLSFILE ] then

       RBLS=`egrep -v "^#" $RBLSFILE`

else

       RBLS="relays.ordb.org sbl.spamhaus.org bl.spamcop.net dnsbl.sorbs.net list.dsbl.org"

fi

QUERY=`which host`

reverse_ip() {

       echo $1 | sed "s/\([0-9]\{1,3\}\)\.\([0-9]\{1,3\}\)\.\([0-9]\{1,3\}\)\.\([0-9]\{1,3\}\)/\4.\3.\2.\1/"

}

if "$@" == "" then

       IPS="64.233.183.27 64.233.183.114"

else

       IPS=$@

fi

return=0

for ip in $IPS do

       for rbl in $RBLS
       do
               host="`reverse_ip ${ip}`.${rbl}"

1. echo "checking for ip ${host}"

               res=`$QUERY $host`
               if [ $? -eq 0 ]
               then
                       echo "$ip est listee chez $rbl"
                       return=1
               fi
       done

done

exit $return