Mesh Security Outage History

A fix has been implemented and we are monitoring.

Queue volume is dropping steadily and the infrastructure team is monitoring performance.

A fix has been implemented and we are monitoring the results.

Queues have returned to normal and we are monitoring system stability.

Spoke too soon. Apologies for the miscommunication. Outbound processing queues have returned to normal. There is still a heavy queue Inbound on the US infrastructure with delivery into 365 static. Microsoft are reporting that all services are operational we will continue to monitor ...

We expect all messages to be delivered in ~30 mins. New emails are being delivered as normal.

We're observing slow mail processing on the US infrastructure.

We're observing a recurrence of the issue on Azure whereby emails are slow to process on the US infrastructure. We're currently monitoring the situation and have reached out to Microsoft for a status update.

Microsoft is currently experiencing issues delivering emails to tenants within the EU. This is NOT a Mesh issue and this status is informational. Impacted emails will be temporarily deferred and we will continue to retry delivery. Microsoft Status: "We're investigating an issue in Europe where some users may experience delays when sending and receiving email messages. For more details, please look for EX1144276 in the admin center."

Our infrastructure team has been monitoring the situation. Inbound/outbound emails are being delivered more reliably and email queues are reducing in size. Latest update from Microsoft (EX1144276): "The new throttling rule has successfully been deployed. We’ve received confirmation from some of the previously affected users that they can now send and receive email. Additionally, our telemetry shows that the new throttling rule is having the desired effect and providing relief."

A fix has been implemented and mail flow has been restored. Delivery Event logging is still behind. We're working to restore that.

A fix has been implemented and we're currently monitoring.

We are continuing to monitor for any further issues.

We're currently monitoring inbound delivery on the EU. Delivery times are currently within a normal range.

We believe the issue is localised to Microsoft O365s AUS Infrastructure, as all other inbound traffic on the Mesh Gateway Service is unaffected. We'll continue to monitor.

Microsoft have acknowledged the issue affecting Exchange Online in Australia. https://x.com/MSFT365Status/status/1925443356118688152 We'll continue to monitor.

All Mesh services are continuing to function normally, however, we are still seeing mail flow irregularities to Australian customers on Microsoft 365. This is not an issue specific to customers using Mesh. Microsoft are now reporting that they have identified the cause and have put in a fix - https://x.com/MSFT365Status/status/1925482680646357013 We will continue to monitor.

A fix has now been implemented. Microsoft has stopped rate limiting our delivery ranges. It will take a little bit of time for the queues to clear. We will post another update shortly.

Email is now flowing as expected. Our team identified that the delay was caused by an ongoing Azure issue which impacted one of our filtering components. Our server redundancy handled the increased load. We're continuing to monitor processing times in case further action is needed.