Mailman lists (reply-to) break OpenDKIM signatures

From: Benoit Panizzon <>
Date: Mon, 14 Jan 2013 13:51:12 +0100

Hello out there

I noticed that the DKIM verification fails if an email is forwarded via a
Mailman Mailinglist.

I suppose the problem is, that we have configured most of the mailinglists to
add a reply-to header to have repliest sent to the list and reply-to is a
header that was signed in the original email.

Can I just add OmitHeaders = Reply-to or is this a required header to be
If so, how could I solve the problem?


SPAM SPAM SPAM SPAM / Hormel's new miracle meat in a can
Tastes fine, saves time. / If you want something grand, / Ask for SPAM!
  - Hormel's 1937 jingle for SPAM
Hippopotomonstrosesquippedaliophobia sh:
Received on Mon Jan 14 2013 - 12:51:29 PST

This archive was generated by hypermail 2.3.0 : Mon Jan 14 2013 - 12:54:01 PST