Filtering Klez email

[Patrick Wiseman <pwiseman@mindspring.com>]

Hello:

This is (partly) a bit OT, but can someone suggest a filter which will
dispose of email in which the email address in the Return-Path header
differs from that in the From or To headers (which is characteristic of
Klez-generated email but not of most legitimate email, list email being
sometimes a notable exception)?  Or perhaps someone can suggest a better
way of identifying and disposing of Klez-generated email.

Onlist, a procmail filter would be welcome; offlist (as I have colleagues
not using Linux) a Groupwise Rule and an Outlook filter would also be
welcome.

Thanks!

Patrick

-- 
Patrick Wiseman                               pwiseman@mindspring.com
Linux user #17943                             *Google First, Ask Later*