Webhook return 503 error

Hi,
The proxy server is currently connected to Nexus repository and is in use.

nexus repository (localhost:8081) → Squid proxy(192.168.0.XXX:3611) → NHN proxy (133.XXX.XXX.XXX:8081)

Due to security policy, I cannot connect directly to the external central repo (ex. Central Repository:)), so I configure multiple proxy servers to download and use packages.

Package downloads work smoothly, but Webhook doesn’t work at all.
If you look at the Nexus log, it returns 503 errors.

How can I solve these problems?

(+ HTTP Settings)

I don’t think this is a question about Nexus, the service you’ve told Nexus to connect to for WebHooks is returning a 503.

If I delete the host proxy setting from HTTP on the setting screen, the webhook will operate normally, but if I set the host proxy, the webhook will receive an error of 503. If so, should I say that the 503 error occurs in the proxy?

could you tell me what is that " the service you’ve told Nexus to connect to for WebHooks is returning a 503." mean?

Webhooks are sent over HTTP to the server that you configured.

It seems likely that either that server is returning 503 or your HTTP proxy server is.