Microsoft Exchange Online outage causes email delays

Microsoft is currently addressing an Exchange Online outage that is causing delays for emails sent to and from external domains. The incident, identified as EX1467029, was confirmed on September 4 following reports of intermittent ‘Server Busy’ errors.

Microsoft stated that the issue affects users attempting to send or receive messages across different domains. Preliminary investigations suggest that existing anti-spam protection mechanisms may be exacerbating the delays for some accounts. The company is currently analyzing diagnostic data to determine the underlying cause and implement an effective solution. No specific timeline for a full resolution has been provided.