Microsoft has advised this mail delivery issue has been resolved, and posted the following:
Preliminary root cause: A service feature became degraded, which created message deferrals. These message deferrals caused delays in sending and receiving email messages.
Next steps: - We're reviewing our monitoring services to find ways to reduce detection time and to improve our automated recovery processes.
This is the final update for the event.
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Please advise the Service Desk at 740.593.1222 if you experience any lingering difficulties which seem related to this event.
Posted Jun 09, 2017 - 08:33 EDT
Investigating
Catmail email & calendar
There is a possibility of delays up to 2 hours in sending and receiving emails for a group of users.
Details from Microsoft Support are included below:
Exchange Online Incident EX105382 - Delays sending and receiving email
User Impact: Users may be experiencing delays of up to two hours when sending and receiving email messages.
Current status: We're investigating an issue in which some users may be experiencing delays of up to two hours when sending and receiving email messages. We have identified a fix and are preparing the fix for deployment to restore service.
Scope of impact: A few customers have reported this issue, and our analysis indicates that impact is specific to a subset of users who are served through the affected infrastructure.
Technicians are investigating the issue.
Affected services:
Catmail email and calendar
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