Greetings community,
I recently noticed that all my email sender nodes are failing. The error reads as such: Execute failed: This error occurred while communicating with the SMTP server: "javax.mail.AuthenticationFailedException: 535 5.7.139 Authentication unsuccessful, basic authentication is disabled.
In my case I was using Outlook smtp with the port 587 using STARTTLS. I have basic password as well as an app password, but the same error appears regardless.
I found a post from oracle indicating that basic auth is going to be deactivated and oauth2 should be used instead. How could we use oauth2 in the email sender nodes?