Last month a Mailman (v2.1.18-1) list on my server got hit with a bunch of bounces based on DMARC rejections from Gmail, Yahoo and Hotmail which honor "p=reject" in a DMARC record. The list had not previously been configured to handle DMARC issues so at that time I set dmarc_moderation_action to "Munge From" which I assumed would solve the problem going forward.
Bounce processing for the list is set to send 10 probe messages at 3 day intervals, and last night all of these addresses were unsubscribed. It seems that probe messages to these addresses, which I believe come from the list server's mailman address, were also bouncing. I would assume that messages which come directly from our server and are not reflected through a redirection or mailing list wouldn't be subject to rejection based on DMARC policy. Why would this be? What can be done to address the problem? -- Lindsay Haisley | "The first casualty when FMP Computer Services | war comes is truth." 512-259-1190 | http://www.fmp.com | -- Hiram W Johnson ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/archive%40jab.org
