[Mailman-Users] mailman, yahoo! and DKIM signatures

[Ralf Hildebrandt]

Situation:
==========

A user from charite.de is using the R-project mailinglist (mailman) to
ask a valid question about the R-Project

All our mails are DKIM signed.

Now a list member of the R-project mailinglist at Yahoo! uses the "This
is Spam" button to report the mail as unwanted, and subsequently I (as
postmaster for Charite) receive a spam complaint.

Problem:
========

Yahoo! seems to "trust" the DKIM header and thus indentifies
charite.de as sender, but in fact it's the R-project mailinglist which
distributed the mail.

I would very much prefer *THEM* to receive the "spam"-complaints, since
there's nothing *I* can do (e.g. like unsubscribing the miscreants from the
R-project mailinglist).

So, shouldn't mailman strip existing DKIM headers before distributing
the mail?

-- 
Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebrandt at charite.de | http://www.charite.de