Public bug reported: If the incoming message contains no From: header or it's From: header can't be parsed into a display name and email address, the DMARC mitigation actions that try to put the From: address in Reply-To: fail to do so. In these cases and also in the non-compliant case where there are multiple From: addresses, just take the sender address from Mailman's get_sender() message method and use that in liu of the From address. ** Affects: mailman Importance: Low Assignee: Mark Sapiro (msapiro) Status: In Progress -- You received this bug notification because you are a member of Mailman Coders, which is subscribed to GNU Mailman. https://bugs.launchpad.net/bugs/1318025 Title: The DMARC mitigatation actions do not include a Reply-To: header in rare cases. To manage notifications about this bug go to: https://bugs.launchpad.net/mailman/+bug/1318025/+subscriptions