Wednesday, January 28, 2026 - 6:00am
<div>On Wednesday, January 28, 2026, at 6:00am, CIT will enable a transport rule for all inbound email. After the change, email that does not pass DMARC standards will be rejected and will return a bounce message to the sender explaining the delivery failure. <br><br>Email sent using Cornell’s Microsoft Mail Service (Microsoft Exchange) or Cornell’s Google Mail Service (Cornell Google Workplace) will meet DMARC policy and be delivered. Note that, for the time being, email discussion list traffic will not be rejected by the DMARC policy change. <br><br>Visit <a href="https://it.cornell.edu/news/cornell-moves-forward-dmarc-enforcement-prev... for more details.</div>
More info on IT@Cornell site:
