[Mailman-Users] Postings being discarded due to DKIM failures?
heller at deepsoft.com
Fri May 16 04:36:25 CEST 2014
At Thu, 15 May 2014 18:36:05 -0700 Mark Sapiro <mark at msapiro.net> wrote:
> On 05/15/2014 05:38 PM, Robert Heller wrote:
> > It wasn't any of these. I believe I have figured out what happened. The poster
> > did something 'bad': instead of creating a fresh message he located an old
> > message with a return address of the list and did a reply and then edited
> > *some* of the headers: only some of the 'visible' ones and did not delete the
> > 'hidden' ones, which confused the list server.
> > I discovered this when saw dkim log messages suggesting that the server the
> > message came from might be pretending to be my server and then when I looked
> > at the headers of another message from this poster that had headers it should
> > not have had.
> The only header that should cause an automatic discard is X-BeenThere:
> with the list's posting address. MUA's will normally not copy this into
> a 'reply', so the poster must have generated the reply in some other way
> like 'bounce' or 'remail' to the list.
I don't know *exactly* what he did, but 'bounce' or 'remail' are probably
likely. I suspect it is a case of having learned how to use a hammer, it was
easier to just use a hammer for everything, not just nails, but screws, nuts,
bolts, etc. :-) The poster is now investigating the new world of the 'address
book' as a way of keeping track of possible addresses to use to send
Robert Heller -- 978-544-6933 / heller at deepsoft.com
Deepwoods Software -- http://www.deepsoft.com/
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