Sending Delays
[UPDATE] On April 2nd starting at ~07:00pm UTC, Postmark experienced an incident that resulted in delayed message delivery and webhook notifications for some customers. The issue was caused by an infrastructure configuration change that disrupted internal mail routing. While messages were safely queued in a "Processing" state, they were not delivered until the routing configuration was restored.
Service was restored on April 3rd at ~4:20am UTC and the backlog of queued messages began sending immediately. No data was lost during this event.
We have since implemented additional monitoring on our internal routing and surrounding sending services to ensure our teams are alerted to processing bottlenecks immediately. We sincerely apologize for the delay and will continue to improve.
The issue has been resolved.
Some customers are experiencing delays in sending and messages will display as "processing." The issue has been identified. Engineering deployed a fix and previously delayed messages are sending.
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API
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SMTP
- Sending
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