Elevated 5xx Transmissions API error rates and latency for some SparkPost customers (US hosted only)

Event timeline

How this incident unfolded, from the official status page.

1. Investigating

   8 months ago

   SparkPost

   We are experiencing an elevated level of errors and latency on the Transmissions API (injection API) for some SparkPost customers. Please retry any 5xx error. Note: This issue does not impact SparkPost customers hosted in the EU.

2. Investigating

   8 months ago

   SparkPost

   We are continuing to investigate this issue.

3. Investigating

   8 months ago

   SparkPost

   We are continuing to investigate this issue. We still see 5xx errors on mail injections and degradation.

4. Identified

   8 months ago

   SparkPost

   The team has identified the root cause. There is a core networking issue that has impacted sending across the clusters.

5. Monitoring

   8 months ago

   SparkPost

   A fix has been implemented and we are monitoring the results.

6. Resolved

   8 months ago

   SparkPost

   This incident has been resolved.