Zix - ETP Delivery issues to subset of UK customers to Microsoft 365

We are to actively monitor and confirm the routing actions have restored mail flow back to full functionality since 12/6. We are continuing to work with Microsoft on the issue as well to confirm the root cause of the deferrals that occurred but are leaving our current routing actions in place until we confirm no further issues can occur.

We are continued to monitor as we have re-routed traffic as a workaround and continue to leave the routing in place for email delivery.

Our team is working on re-routing traffic to help aid with delivery. It appears that Microsoft is deferring the messages from our delivery server and we are working on getting in contact with Microsoft as well.

We are currently investigating an issue in which a subset of customer that are hosted on 365 are experiencing delays to their tenant. We will update once we have further details.