We are seeing an increase in "delays"/4xx errors on outbound message delivery to yahoo recipients for some SparkPost and SparkPost Enterprise customers (US +EU)

Incident Report for SparkPost

Resolved

This incident has been resolved.

Posted Sep 05, 2019 - 03:49 EDT

Monitoring

Yahoo appears to have resolved their DNS issues at this time. We are continuing to monitor the situation.

Posted Sep 05, 2019 - 03:42 EDT

Identified

Some mailbox provider domains including yahoo.com and aol.com are having internet wide DNS issues. Mail delivery will be delayed to these domains.

Posted Sep 05, 2019 - 03:02 EDT

Investigating

We are seeing an increase in "delays"/4xx errors on outbound message delivery to yahoo.com recipients for some SparkPost and SparkPost Enterprise customers (US +EU)

Posted Sep 05, 2019 - 02:43 EDT

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