On 19 Aug 2016, at 10:39, Jim Popovitch wrote:
PRVS/BATV
How is that relevant to this issue?
BATV only applies to the envelope sender address, which any proper
mailing list (including any Mailman list) completely replaces with its
own bounce address so that bounces go to the mailing list software and
not to the original sender or the list itself. As the OP said, this is
someone or something spamming the original message authors (as shown in
From headers) with the same Subject header as something they've posted
to a list.
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