The gateway timed out. Where did the payment go?

Frequently asked questions

What should you do with a message you can't confirm was processed?

Never mark it complete — an uncompleted message becomes available for redelivery instead of being silently lost, which is what lets retries recover from a transient failure like a payment gateway timeout.

What stops a bad message from retrying forever?

MaxDeliveryCount — once a message's delivery count reaches that limit it's automatically moved to the dead-letter queue instead of retrying indefinitely. The dead-letter queue is only useful if something alerts on its depth; left unread, it's the same as losing the message.

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