#!/bin/bash
#
# Forwards spam with a complain to one or more destinations supplied
# in the command line.
#

if [ $# == 0 ]; then
	echo "Usage: $0 addr ..." >&2
	exit 1
fi

msgfile="$(mktemp -t spam-notify.XXXXXX)"

# Put the beginning of the message into the temporary file
head -c 8k >"$msgfile"

# Ditch the rest of the message
cat >/dev/null

subject="SPAM ALERT [$(formail -c -x From: < "$msgfile"): $(formail -c -x Subject: < "$msgfile")]"

mutt -s "$subject" -a "$msgfile" "$@" <<EOF
Hello,

I received an unsolicited email message from a host that appears as
belonging to your network. I never requested or subscribed to such
deliveries, and I don't want them to bother me again. A part of the
abusive message, including email headers, is attached herein. I hope
this will provide enough information for you to take steps that
will prevent further abuse.
Thank you for your time.

With best regards,
  Mikhail.
EOF

rm -f "$msgfile"