[Mailman-Users] Postings being discarded due to DKIM failures?

Mark Sapiro mark at msapiro.net
Fri May 16 03:36:05 CEST 2014

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.

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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