CUFILTER(1p) User Contributed Perl Documentation CUFILTER(1p)
NAME
cufilter - Filter emails through Mail::CheckUser
SYNOPSIS
Add the following lines to your ~/.procmailrc:
# Filter mail through Mail::CheckUser
:0f
| /usr/bin/cufilter
DESCRIPTION
When email messages are filtered through this program using the procmail settings as outlined in the SYNOPSYS, the email address in the
"From:" header is passed through Mail::CheckUser to ensure validity. If there is a problem with the email address, the "Subject:" header
is modified to show which email address failed along with the failure reason. No messages are lost, but it provides an easy way for the
mail client to organize, sort, or filter based on the subject tweaks.
EXAMPLES
Lets say a spammer sends a message with the following headers:
From: god@heaven.org
To: you@host.com
Subject: Happy Pill
Then the new headers might change to the following:
From: god@heaven.org
To: you@host.com
Subject: [CU!god@heaven.org!DNS failure: SERVFAIL] Happy Pill
This makes it easy to filter for mail clients.
INSTALL
This file can be installed into /usr/bin/cufilter and is intended to be utilized through the procmail functionality by adding the following
lines to your ~/.procmailrc configuration.
# Filter mail through Mail::CheckUser
:0f
| /usr/bin/cufilter
AUTHORS
Rob Brown bbb@cpan.org
COPYRIGHT
Copyright (c) 2003 Rob Brown bbb@cpan.org. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
$Id: cufilter,v 1.3 2003/09/18 15:36:26 hookbot Exp $
SEE ALSO
Mail::CheckUser(3), procmail(1).
perl v5.14.2 2012-03-10 CUFILTER(1p)