Internal email without user and password

hello, I am trying to configure the metabase internal mail, which is used to send reports, create users, etc ... I have metabase mounted in K8s, in AWS, which uses roles to access services such as mail, and for security reasons no longer use username and password, it is possible to skip the username and password, in other words not to indicate anything, because so far it does not allow it.

unfortunately not, Metabase SMTP needs a user and a pass, so you'll have to put those at least as secrets in K8s env vars

I did a workaround using a different BI product by creating another SMTP server that forwarded email to the primary SMTP server that doesn't need login.
More frequently, I just use SMTP2GO or similar.