[Mailman-Users] Prevent MM from adding a CC for DMARC munged posts?
mark at msapiro.net
Fri Jan 11 14:23:36 EST 2019
On 1/11/19 7:06 AM, David Gibbs via Mailman-Users wrote:
> Does anyone know if there is a way to prevent MM from adding the
> original posters email address as a CC when the DMARC munging is done?
The following comment from Mailman/Handlers/CookHeaders.py describes the
goals for handling the original From:
> # MAS: We need to do some things with the original From: if we've munged
> # it for DMARC mitigation. We have goals for this process which are
> # not completely compatible, so we do the best we can. Our goals are:
> # 1) as long as the list is not anonymous, the original From: address
> # should be obviously exposed, i.e. not just in a header that MUAs
> # don't display.
> # 2) the original From: address should not be in a comment or display
> # name in the new From: because it is claimed that multiple domains
> # in any fields in From: are indicative of spamminess. This means
> # it should be in Reply-To: or Cc:.
> # 3) the behavior of an MUA doing a 'reply' or 'reply all' should be
> # consistent regardless of whether or not the From: is munged.
> # Goal 3) implies sometimes the original From: should be in Reply-To:
> # and sometimes in Cc:, and even so, this goal won't be achieved in
> # all cases with all MUAs. In cases of conflict, the above ordering of
> # goals is priority order.
If your goal is to not expose the original From: address, you can make
the list anonymous or if you have sufficient access, modify the code.
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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