SMTP delays for some SparkPost and SparkPost Enterprise customers (US hosted only)

Incident Report for SparkPost

Resolved

Deliveries continue to be normal. If there is any queued mail due to the incident it will be delivered shortly.

Posted Apr 28, 2018 - 12:27 EDT

Monitoring

We are seeing a significant improvement but are continuing to monitor. Once again, apologies for the inconvenience.

Posted Apr 28, 2018 - 10:49 EDT

Identified

We are working to resolve this issue. Thank you for your patience. Any messages delayed will be retried.

Posted Apr 28, 2018 - 10:05 EDT

Investigating

We are investigating an increase in delays with the message "421 4.4.0 [internal] no mail servers for this domain could be reached at this time".

Posted Apr 28, 2018 - 09:37 EDT

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