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contrib-munin/plugins/senderbase/senderbase

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#!/bin/sh
: << =cut
=head1 NAME
senderbase - Gives the current SenderBase reputation for a mail host.
SenderBase is a mail server reputation service run by Cisco. It's
basically a measure of how likely or unlikely they think it is for the
server in question to be sending spam, rated on a scale of -10 (near-100%
chance of spam) to 10 (near-0% chance of spam). The SenderBase score for
a server is one of several criteria that may be used when doing spam
filtering; consequently, it's useful for the operator of a mail server to
track their current reputation score.
=head1 CONFIGURATION
By default, the script will use the first IP address returned by
C<hostname -I>. If that's not the right address to use, set the
C<ip_address> environment variable to the appropriate value. (Note that
if a host has multiple IP addresses, there's no guaranteed ordering for
C<hostname -I>, so you should set the address explicitly in that case.)
[senderbase]
env.ip_address 8.8.8.8
=head1 AUTHOR
Phil! Gold <phil_g@pobox.com>
=head1 LICENSE
This plugin is made available under a CC0 waiver:
https://creativecommons.org/publicdomain/zero/1.0/
=head1 MAGIC MARKERS
#%# family=auto
#%# capabilities=autoconf
=cut
if which dig >/dev/null; then
query_program=dig
do_query () {
hostname=$1
dig +short $hostname TXT | sed 's/"//g' | head -1
}
elif which host >/dev/null; then
query_program=host
do_query () {
hostname=$1
host -t TXT $hostname | grep -m 1 'descriptive text' | cut -d\" -f2
}
else
query_program=
do_query () {
true
}
fi
real_ip_address="${ip_address:-$(hostname -I | awk '{print $1}')}"
ip_reversed="$(echo $real_ip_address | sed -re 's/^([0-9]+)\.([0-9]+)\.([0-9]+)\.([0-9]+)$/\4.\3.\2.\1/')"
query_host="${ip_reversed}.rf.senderbase.org"
if [ "$1" = "autoconf" ]; then
if [ -z "$query_program" ]; then
echo 'no (No "dig" or "host" executable found.)'
elif [ -z "$(do_query "$query_host")" ]; then
echo "no (No SenderBase reputation for IP address ${ip_address}.)"
else
echo 'yes'
fi
exit 0
fi
if [ "$1" = "config" ]; then
cat <<EOF
graph_category mail
graph_title SenderBase Reputation for $real_ip_address
graph_info Current reputation from senderbase.org. Ranges from -10 (very poor) through 0 (neutral) to 10 (very good).
graph_args --lower-limit -10 --upper-limit 10
reputation.label Reputation
reputation.warning 0:
reputation.critical -5:
EOF
exit 0
fi
value="$(do_query "$query_host")"
echo reputation.value "${value:-U}"