Elevated API error rates for some SparkPost and SparkPost Enterprise customers (US hosted only)

Incident Report for SparkPost

Resolved

This incident has been resolved.
Posted Oct 18, 2018 - 16:29 EDT

Monitoring

A fix has been implemented and we are monitoring the results.
Posted Oct 18, 2018 - 15:56 EDT

Investigating

We are experiencing an elevated level of Transmissions and SMTP API errors for our APIs for some SparkPost and SparkPost Enterprise customers. These errors will indicate that sending domains or IP pools are invalid. We are investigating the problem.
Note: This issue does not impact our SparkPost Enterprise customers hosted in the EU.
Posted Oct 18, 2018 - 15:40 EDT
This incident affected: Transmissions API (Transmissions API - USA) and SMTP API (SMTP API - USA).
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