Due to the large number of requests to support DNS providers to resolve DNS challenges, it have become unpractical and unfeasible to maintain and test all coming in. For this reason, it has been decided to instead support out-of-tree DNS providers via way of an external webhook.
To implement an external DNS provider webhook, it is recommended to base your
implementation on the example
reach out on the
cert-manager-dev channel on the community
slack for advise and guidance on getting a DNS webhook
running and released.