We are seeing an increase in "delays"/4xx errors on outbound message delivery for some SparkPost and SparkPost Enterprise customers (US hosted only)

Incident Report for SparkPost

Resolved

This incident has been resolved.

Posted Apr 29, 2021 - 14:37 EDT

Monitoring

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

Posted Apr 29, 2021 - 14:03 EDT

Investigating

We are seeing an increase in "delays"/4xx errors on outbound message delivery for some SparkPost and SparkPost Enterprise customers (US hosted only).
Note: This issue does not impact our SparkPost customers hosted in the EU.

Posted Apr 29, 2021 - 13:59 EDT

This incident affected: SMTP Delivery (Outbound Message Delivery) (SMTP Delivery - USA).