On Sep 17, 2013, at 10:36 PM, Mark Sapiro <mark@msapiro.net> wrote:

On 09/17/2013 10:04 PM, Franck Martin wrote:

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1. If you keep the From: header as it is then, we will still have the same problems

Perhaps I wasn't clear. The From: of the outer message would contain the list address. The From: of its message/rfc822 payload would be unchanged from that of the incoming message.

My questions only had to do with the Reply-To: of the outer message in cases where the list was set to mung Reply-To: in some way.

Ah, makes sense, sorry

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2. the purpose of the encapsulation message/rfc822 is not meant to preserve the DKIM signature, DKIM is not meant to be verified by MUAs

No, but that is a side effect, at least where content filtering has not altered the message.

Yes indeed