Outage in One.com
Email delivery issues with Microsoft
Resolved MinorIncident Report
Summary AI Generated
Microsoft experienced temporary capacity issues that caused delayed email delivery from One.com to Microsoft-hosted email addresses for approximately 11 hours. Affected users received "Delivery delayed" bounce notifications, though no action was required as emails were queued for automatic delivery. Microsoft resumed accepting incoming emails mid-incident, with backlogged messages delivered gradually until full resolution was confirmed.
Due to temporary capacity issues at Microsoft, emails to Microsoft servers may be delivered with a delay.
If you receive a bounce with the subject “Delivery delayed”, this is an expected consequence of the current outage. No action is required on your part.
The email will be delivered automatically as soon as the receiving email provider, Microsoft, has resolved the issue.
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Latest Updates ( sorted recent to last )
RESOLVED
14 days ago - at 09/04/2026 09:47PM
Email delivery issues with Microsoft has now been fixed, and all systems are verified to be working as expected again.
If you are still having problems accessing related services with us, please contact us on chat or email here: https://www.one.com/chat.
MONITORING
14 days ago - at 09/04/2026 01:47PM
Microsoft is accepting incoming emails again.
Messages that previously received a “Delivery delayed” notice due to delays on Microsoft’s side are now being delivered gradually.
We will continue monitoring the situation until all backlogs have been processed.
IDENTIFIED
14 days ago - at 09/04/2026 10:52AM
Due to temporary capacity issues at Microsoft, emails to Microsoft servers may be delivered with a delay.
If you receive a bounce with the subject “Delivery delayed”, this is an expected consequence of the current outage. No action is required on your part.
The email will be delivered automatically as soon as the receiving email provider, Microsoft, has resolved the issue.
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