#

# Mercury/32 Basic Content Control rule file.

# Copyright (c) 2002-2003, David Harris; portions copyright (c) 2002 David Kocmoud.

# For information on the syntax and format of this file, please consult

# the "Content control" section of the Mercury/32 Help file.

#

# This set of rules is intended to catch a wide range of unwanted mail

# messages where the content is commercial or sexual in nature. It works

# quite well (at the time of writing anyway) but you will almost certainly

# want or need to adjust it over time to deal with the specific types of

# content you want to filter. This rule set is designed to be used with a

# definition where the trigger weight is set to 50.

#

# Note that many of the rules in this file have negative weights: this is

# a useful way of "promoting" a message that might otherwise be detected

# as having unacceptable content.

#

​

# Check for "Lazy HTML", almost always a sure sign of spam

if Test "LazyHTML strict" weight 51 tag "Message contains Lazy HTML"

​

# Check for iFrame tags

if Test "HasIFrame" weight 51 tag "Probable iFrame virus attack"

​

# Check for excessive numbers of HTML comments

if Test "HTMLComments 10" weight 51 tag "Too many HTML comments"

​

# Check for an unreasonable number of spaces in the subject

if Subject matches "*            +*" weight 51

​

# Check for unreasonable numbers of high-bit characters - a fairly

# reliable sign of unreadable Asian spam.

if Test "Garbage 25" weight 51

​

# Give a small weight to messages containing URLs in the .BIZ TLD

if body matches "*http:*.biz*" weight 15

​

# Check for all variations of "viagra" and similar products in subject and body

# Note that the "obfuscated" keyword, which is used to trap doctored versions of

# trigger words like "vi@gra", can be abbreviated to "ob".

​

if subject contains "viagra" obfuscated weight 51

if subject contains "viapro" ob weight 51