Thanks for your reply @TarunKumar , I am checking the TLS version, however, the weird thing is that sometimes it works and sometimes it doesn't. If there would be a problem with the configuration it would never work, right?

We are migrating a customer project to the Cloud and for customer's needs we are using the LDAPIdentityProvider in publish to synchronize certain data from users.We are currently facing an intermittent exception during TLS Handshake. This error sometimes happens and stays for a while, then suddenly ...