Microsoft has restarted services and shifted traffic to a healthy portion of the email system to reduce impact. Microsoft is also reverting a recent update which may be causing issues with the email service. ITS staff are beginning to see improved email delivery; however, the overall email service continues to experience delays.
Findings from Microsoft's investigation indicate that a portion of the system responsible for email message filtering became degraded, resulting in email message delivery delays. Services are currently restarting to bring the system back to a healthy state. Microsoft is continuing to analyze the situation to confirm the root cause of impact.
ITS is working with Microsoft to investigate an issue where users may be unable to access or use Office 365 email services or features. Users may be experience delays when receiving email messages from senders outside of the University of Iowa email system. Users who scan to email are also experiencing issues. We will update this notice as soon as more information is available.