HubSpot outage, 1 May 2026

Intermittent DMARC failures for messages to Microsoft-hosted inboxes

Started
Resolved
2 May 2026, 19:31 UTC (after 27 h 39 min)
Impact
Not stated

Last update from HubSpot

HubSpot has continued to monitor the fix and believe we have addressed the underlying issue. Some messages deployed before May 1, 5 pm EDT may still experience delayed deliveries or failures over the next ~48 hours as retries and queues fully clear.

2 May 2026, 19:31 UTC

Read the full incident on the official HubSpot status page

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