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.

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 1.1 2003/09/01 16:12:48 hookbot Exp $

SEE ALSO

Mail::CheckUser(3), procmail(1).