Is SocketLabs down?

We are monitoring reports of "Server busy" errors from Microsoft recipients. This issue has been identified by Microsoft (EX1467029), affecting users who may be attempting to send and receive email messages from external domains in Exchange Online. We will update when more information is available.

Microsoft has reported that mitigation for incident EX1467029 is being applied, and we are seeing a significant reduction in the number of “Server busy” responses from Microsoft. Some delivery attempts to Microsoft recipients are still being deferred, and messages affected earlier in the incident remain queued for retry. SocketLabs will continue retrying these messages automatically in accordance with normal delivery procedures. As Microsoft service continues to recover, we expect delayed messages to be delivered over time. We will continue monitoring delivery performance and Microsoft’s status updates.

The Microsoft service issue associated with incident EX1467029 has been resolved, and delivery to Microsoft recipients has returned to normal. Messages delayed during the incident have been processed through our normal retry queues and the backlog has just about fully cleared. If you continue to experience delivery delays and issues to Microsoft recipients, please contact SocketLabs Support for further investigation.

We are currently investigating delays affecting a subset of customers.

We have identified an issue causing delays for a subset of customers, and are actively mitigating.

Mitigations have been applied and messages for affected customers are being processed. We will update again within 2 hours.

All message processing operations have returned to normal, and we consider this issue resolved.