RpcError(UNKNOWN): Http response at 400 or 500 level, http status code: 0
Hi, I´m using Mailjet as SMTP Provider but I cannot get it working in my production environment. I get the error in the subject and it doesn´t seem to be the configuration, but the environment itself that fails. I have a Kubernetes cluster with nginx ingress as proxy reverse. I set the tlsMode to be "external" and enforced http2. I can configure a local docker instance without any problems, but like I´ve said, as soon as it gets installed on my prod cluster, I can´t send any mail at all. I´ve seen 3 posts on this forum mentioned this issue, but couldn´t find any solution yet.
