On Sun, 2018-11-25 at 11:06 -0800, Mark Sapiro wrote:
A .forward normally does not cause issues with DMARC because .forward redirection normally does not transform the message in ways that break DKIM signatures. Thus if the original message was DKIM signed by a domain "aligned" with the From: domain, the forwarded message should still pass DMARC. There is only an issue if the original sender was relying on SPF only to pass DMARC.
Similarly, if you're using from_is_list in Mailman, or dmarc_moderation_action, the domain name associated with the list must have a proper SPF record.
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