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ChangesSparkPostMicrosoft outage: delays delivering to Outlook, Hotmail and Office 365

SparkPost: Incident updated: Microsoft outage: delays delivering to Outlook, Hotmail and Office 365

Incident updateNot classified yetChanged status.sparkpost.com (opens in new tab)
Summary

Summary pending. The diff below shows exactly what changed.

Incident page: the full timeline of updates

What changed

Struck in red is what SparkPost removed; blue is what they added. Muted text is unchanged context.

AddedUpdateidentified#1
Before: not present
After: We're still monitoring Microsoft incident EX1550543. Microsoft says it has begun bringing affected servers back into service and is seeing limited recovery in some regions. We're seeing a gradual improvement too. More mail is getting through to Outlook.com, Hotmail, Live, MSN and Office 365 recipients than an hour ago, but most delivery attempts to Microsoft are still being deferred. Delays will continue until Microsoft completes its recovery. Microsoft expects to post its next update by 00:30 UTC, and you can follow it at https://status.cloud.microsoft/m365/referrer=serviceStatusRedirect. SparkPost's systems are working normally. Messages still waiting for Microsoft are queued and retried automatically, so please don't resend them. That would create duplicates once they are delivered. Because the problem has now lasted more than six hours, messages with an expiration time of up to several hours may expire before Microsoft accepts them. Each expired message generates a bounce event in your event data. Expired messages are no longer queued, so you can decide whether to resend those specific messages.

Compared with the previous archived version of this incident (10 to 30-minute polling). View the live incident (opens in new tab).

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History of this incident

TodayFriday, November 13Fri, Nov 13

3 incident changes

YesterdayThursday, November 12Thu, Nov 12

2 incident changes

Cite this

Incident updated: Microsoft outage: delays delivering to Outlook, Hotmail and Office 365 on SparkPost’s status page, changed 2026-11-13 00:03 UTC (change 3 of 5).

Title
Incident updated: Microsoft outage: delays delivering to Outlook, Hotmail and Office 365
Vendor
SparkPost
Date
URL
https://rewindex.com/change/rb58b9a0cad2e69

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