6:10 AM PDT Between 4:05 AM PDT and 5:56 AM PDT, some customers may have experienced elevated errors resolving DNS records hosted on Route 53 using DNS resolvers 8.8.8.8 / 8.8.4.4 . The issue has been resolved and the service is operating normally.
Our hosting partner AWS is investigating issues with DNS which are causing issues with some of our customers connecting to our US-based SMTP and API endpoints. EU hosted SparkPost customers are not affected. We are working with them to resolve:
5:19 AM PDT We are investigating reports of problems resolving some DNS records hosted on Route53 using the third party DNS resolvers 8.8.8.8 and 8.8.4.4 .
5:49 AM PDT We have identified the cause for an elevation in DNS resolution errors using third-party DNS resolvers 8.8.8.8 / 8.8.4.4 and are working towards a resolution.
This incident affected: Transmissions API (Transmissions API - USA), SparkPost Application (WebUI) (SparkPost Application - USA), and SMTP API (SMTP API - USA).