Oracle cloud email as relay doesn't works

[Connectnet]

Ill try it out. We are not alone with the problem:

Hestia Global SMTP Relay Exim works?

Hello, i test this included hestia option in HestiaCP 1.6.14 on Ubuntu 22.04 LTS. But it doesn’t work correctly or as expected. I have been reading several that went through a similar problem, without being able to find the problem. I tried several External SMTP services not oly Oracle Email Delivery, but I can’t get it to establish the connection. This should be SMTP to port 587 with authentication and STARTTLS. Has anyone been able to get this setup to work with Exim?