当 webhook 失败时，Docusign 信封通知会发生什么？

Question

I am trying to implement Docusign in my company's system. I figured out how to use REST API and how to implement webhook to receive envelope event notifications. However I am wondering what happens when webhook returnes an error? Does Docusign resends notification after some amount of time? I can not find anything in the documentation. Do I have to implement a pooling mechanism alongside with the webhook or there is a better way to manage this cases?

EDIT:

So here what i see in the failure journals:

One actually was republished but not the other one. Maybe error code makes the difference? The first one was a 5xx server side error and the other one 404 initially and 404 the second time too.

However DocuSign is not trying second attempt strait away but waits 24h?

Here is how I configure the envelope for notifications in C#:

envelope.EventNotification = new EventNotification()
{
    Url = _webhookUrl,
    RequireAcknowledgment = "true",
    LoggingEnabled = "true",
    IncludeEnvelopeVoidReason = "true",
    IncludeDocuments = "false",
    IncludeCertificateOfCompletion = "false",
    IncludeCertificateWithSoap = "false",
    IncludeDocumentFields = "false",
    IncludeHMAC = "false",
    IncludeSenderAccountAsCustomField = "false",
    IncludeTimeZone = "false",
    UseSoapInterface = "false",
    EnvelopeEvents = new List<EnvelopeEvent>() { new EnvelopeEvent("completed"), new EnvelopeEvent("declined"), new EnvelopeEvent("voided") },
    RecipientEvents = new List<RecipientEvent>() { new RecipientEvent(null, "Completed") }
};

Answer 1

If the Require Acknowledgement option is selected and a publication message fails to be acknowledged during the next 24 hours, the message goes back into the queue and the system will retry delivery after a successful acknowledgement is received. This is for either no acknowledgment or a bad HTTP result. If a good HTTP results comes at anytime, the connect log is updated and the message is removed from the queue. There is a maximum of ten retries.