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#!/bin/sh
################################################################################
# PROXSMTP SAMPLE SCRIPT
#
# These sample scripts are to give you an idea of how to use proxsmtp
# filtering. They are NOT intended for use on production servers.
#
# A simple proxsmtp script which sends email through spamassassin.
#
# Make sure the option 'FilterType' is set as follows:
# FilterType: pipe
#
# See proxsmtpd.conf(5) for configuration details
#
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# WARNING WARNING WARNING WARNING WARNING WARNING WARNING
#
# By using variables passed in from clamsmtpd in file
# manipulation commands without escaping their contents
# you are opening yourself up to REMOTE COMPROMISE. You
# have been warned. Do NOT do the following unless you
# want to be screwed big time:
#
# mv $EMAIL "$SENDER.eml"
#
# An attacker can use the above command to compromise your
# computer. The only variable that is guaranteed safe in
# this regard is $EMAIL.
#
# The following script does not escape its variables
# because it only uses them in safe ways.
#
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# Pipe mail through this command
spamassassin -e
# Now check return value
if [ $? -ne 0 ]; then
# The last line of output to stderr will be used
# as an error message when the filter fails
echo "550 Content Rejected: We don't like spam" >&2
# Cause the filter to fail, email will be rejected
exit 1
fi
# Filter success
exit 0
|
