Amazon SES - Delivery Failure, but not SMTP error included in Delivery Status Notification

Hello Mike,

I'd recommend doing the following procedures to help verify what is causing the issue:

You can configure Amazon SES Event Publishing to receive detailed information about the delivery status of your emails. This can publish events like bounces (Including hard bounces due to invalid email addresses and soft bounces due to temporary issues like full mailboxes), complaints. deliveries, as well as other event types.

It’s important to note that the specific details of the SMTP response code or failure are dependent of the data provided back by the remote Mail Transfer Agent (MTA). If the remote MTA does not provide detailed information, The logs received through SES Event Publishing may not list a specific reason for the failure.

Lastly, some common causes for invalid recipient email addresses, temporary server issues, or your domain/IP being blacklisted.

If you still have problems, you can open a case with Amazon SES support and provide the message ID of the emails that are failing to deliver. They may be able to investigate further and provide more details.

250 Ok 01010160d7de98d8-21e57d9a-JZho-416c-bbe1-8ebaAexample-000000

Let us know if you have any other questions!

References:

Monitoring email with SES event publishing - https://docs.aws.amazon.com/ses/latest/dg/monitor-using-event-publishing.html

Configuring event publishing - https://docs.aws.amazon.com/ses/latest/dg/monitor-sending-using-event-publishing-setup.html

Working with event publishing event data - https://docs.aws.amazon.com/ses/latest/dg/working-with-event-data.html

Examples of event data that SES publishes to SNS - https://docs.aws.amazon.com/ses/latest/dg/event-publishing-retrieving-sns-examples.html