# SpamAssassin rules file: kam sandbox
#
# Please don't modify this file as your changes will be overwritten with
# the next update. Use @@LOCAL_RULES_DIR@@/local.cf instead.
# See 'perldoc Mail::SpamAssassin::Conf' for details.
#
# <@LICENSE>
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to you under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at:
# 
#     http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# </@LICENSE>
#
###########################################################################

#RULES FROM DFS FOR TESTING

#8/13/2013
#I'm seeing a fair bit of spam from the null return path.  That is,
#MAIL From:<> (or in the headers, Return-Path: <>).  A lot of this
#spam lacks any MIME headers (MIME-Version:, Content-Type:)
#
#I've experimented with a rule that adds points in this situation; most
#legitimate DSNs have a MIME-Version: header.
#
#So would anyone care to test this:
#
#meta DSN_NO_MIMEVERSION (__BOUNCE_RPATH_NULL && !__MIME_VERSION)
#describe DSN_NO_MIMEVERSION Return-Path <> and no MIME-Version: header
#score DSN_NO_MIMEVERSION 2
#
#The rules __BOUNCE_RPATH_NULL and __MIME_VERSION come from
#20_vbounce.cf and 20_head_tests.cf respectively and look like this:
#
#header __BOUNCE_RPATH_NULL    Return-Path =~ /<>/
#header __MIME_VERSION         exists:MIME-Version

meta DSN_NO_MIMEVERSION (__BOUNCE_RPATH_NULL && !__MIME_VERSION)
describe DSN_NO_MIMEVERSION Return-Path <> and no MIME-Version: header
score DSN_NO_MIMEVERSION 2

#EOF