On the evening of 3/29 between approximately 8pm – 9:30pm eastern time (ET), AOL suffered a technical issue where every email sent to them received a “recipient address rejected” reply. This means any deployments actively attempting deliveries in that time frame may have caused valid AOL (and affiliated domain) addresses to be flagged invalid for future campaigns. Epsilon is currently working to identify any such addresses that may have been incorrectly “bounced out” in....