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It's a little confusing, but my idea is that there would be multiple MX2 records for every authorized sender's key. One of those MX2 records would have a marker
by gjsman-1000 2y ago
It's a little confusing, but my idea is that there would be multiple MX2 records for every authorized sender's key. One of those MX2 records would have a marker on it for incoming mail.
- thecosas 2y agoAh, gotcha. Feel like I've got the existing MX stuck in my mental model. Honestly with all of the existing DNS record based "authentication" with SPF, DKIM, DMARC its already a mess for bulk senders too lol. Thanks for putting these thoughts together :-)