I see. So when one Yahoo mail server rejects a message for "unusual volume or user complaints", exim repeats the attempt with another Yahoo server. When a mailing list delivery to several thousand recipients (around half of them at Yahoo serviced addresses) somehow triggered Yahoo to start blocking us, the problem from their end was multiplied by 5 and all the retries keep us from getting unblocked. (All of our messages are authenticated SPF+DKIM+DMARC and our subscribers are double opted-in.)
I don't know enough about exim configuration and retry rules. So is there a way to not try the other four Yahoo IP addresses immediately when the response is for "unusual volume" or "user complaints". I gather that exim bases retries on mail server IP address rather than domain. We participate in the Yahoo feedback loop and get very few complaints which are automatically unsubscribed from all future mailings from us to any of our mailing lists. I've cancelled all of the mailing list messages from our mail queue, but there are still around 40 individual (non-mailing-list) messages in the queue. Do I need to wait for the retries to be exhausted or can I trigger a return-to-sender sooner to get our volume to Yahoo close to zero for a while? I just don't know how to proceed at this point to get things back to normal. -- ## subscription configuration (requires account): ## https://lists.exim.org/mailman3/postorius/lists/exim-users.lists.exim.org/ ## unsubscribe (doesn't require an account): ## exim-users-unsubscr...@lists.exim.org ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
