[Linux-aus] more about DKIM and mailing lists

Russell Coker russell at coker.com.au
Tue Jul 25 19:19:34 AEST 2017

On Tuesday, 25 July 2017 6:22:33 PM AEST Adam Nielsen wrote:
> > On Fri, 15 Jan 2016 03:41:01 PM Julian De Marchi wrote:
> > > In regards to DKIM, we will try and understand the issue more
> > > before implementing any changes.
> > 
> > How much more understanding is needed?
> I noticed the linux-aus list changed a little while back to use
> from_is_list=1 as you explained in your blog, but I too see DKIM
> failures on messages like this one I am replying to.
> Just so I understand clearly, are you saying that you are happy with
> the from_is_list change, but you also want linux-aus to strip the DKIM
> headers with REMOVE_DKIM_HEADERS=Yes in Mailman as well, and this is the
> only thing that would need to be done to completely fix the issue?

Below are the messages from my mail log about the rejection of the mail you 
sent me via the list.  Yes removing the DKIM signatures is necessary, along 
with from_is_list NOT dmarc_moderation.

Jul 25 18:23:17 smtp postfix/smtpd[31551]: D143C108A2: 
Jul 25 18:23:17 smtp postfix/cleanup[32250]: D143C108A2: message-
id=<20170725182234.4fac4a57 at teln.shikadi.net>
Jul 25 18:23:18 smtp opendkim[495]: D143C108A2: s=default d=shikadi.net SSL 
error:04091068:rsa routines:int_rsa_verify:bad signature
Jul 25 18:23:18 smtp opendkim[495]: D143C108A2: bad signature data
Jul 25 18:23:18 smtp postfix/cleanup[32250]: D143C108A2: milter-reject: END-
OF-MESSAGE from mailhost.linux.org.au[]: 5.7.0 bad DKIM signature 
data; from=<linux-aus-bounces at lists.linux.org.au> to=<russell
+linuxaus at coker.com.au> proto=ESMTP helo=<mailhost.linux.org.au>

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