Provided by: libmail-checkuser-perl_1.24-2_all
cufilter - Filter emails through Mail::CheckUser
Add the following lines to your ~/.procmailrc: # Filter mail through Mail::CheckUser :0f | /usr/bin/cufilter
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.
Lets say a spammer sends a message with the following headers: From: email@example.com To: firstname.lastname@example.org Subject: Happy Pill Then the new headers might change to the following: From: email@example.com To: firstname.lastname@example.org Subject: [CUemail@example.com!DNS failure: SERVFAIL] Happy Pill This makes it easy to filter for mail clients.
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
Rob Brown firstname.lastname@example.org
Copyright (c) 2003 Rob Brown email@example.com. 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 $