If a webhook receives a retriable error code, Delivery Hub automatically resends the webhook up to two times, at exponentially increasing intervals (exponential backoff) of 2x. When the same webhook type receives error codes from the same URL more than ten times in one hour, the webhook is blocked and can only be unblocked by a member of Bringg's support team.

Retriable error codes

408 - Request Timeout
500 - Internal Service Error
502 - Bad Gateway
503 - Service Unavailable
504 - Gateway Timeout