We have experienced incoming email delivery delays today between around 14:00 CET (13:00 UTC, 09.00 EDT, 06:00 PDT) and 20:00 CET (19:00 UTC, 15.00 EDT, 12:00 PDT).
While the root cause of these delays are still being investigated, the symptoms have been resolved and incoming email is now being delivered normally.
Email that was delayed during this period should now also have been delivered normally, or in the event of a rejection the sender will have received a bounce message alerting them to the problem.
We apologize for the inconvenience caused by this issue. This status post will be updated with any further details.